diff --git a/README.md b/README.md
index cccf74f..3426f0a 100644
--- a/README.md
+++ b/README.md
@@ -115,6 +115,7 @@ Just ask Claude naturally:
 **Quick Tool Selection Guide:**
 - **Need deeper thinking?** → `think_deeper` (extends Claude's analysis, finds edge cases)
 - **Code needs review?** → `review_code` (bugs, security, performance issues)
+- **Pre-commit validation?** → `review_pending_changes` (validate git changes before committing)
 - **Something's broken?** → `debug_issue` (root cause analysis, error tracing)
 - **Want to understand code?** → `analyze` (architecture, patterns, dependencies)
 - **Need a thinking partner?** → `chat` (brainstorm ideas, get second opinions, validate approaches)
@@ -124,11 +125,12 @@ Just ask Claude naturally:
 **Tools Overview:**
 1. [`think_deeper`](#1-think_deeper---extended-reasoning-partner) - Extended reasoning and problem-solving
 2. [`review_code`](#2-review_code---professional-code-review) - Professional code review with severity levels
-3. [`debug_issue`](#3-debug_issue---expert-debugging-assistant) - Root cause analysis and debugging
-4. [`analyze`](#4-analyze---smart-file-analysis) - General-purpose file and code analysis
-5. [`chat`](#5-chat---general-development-chat--collaborative-thinking) - Collaborative thinking and development conversations
-6. [`list_models`](#6-list_models---see-available-gemini-models) - List available Gemini models
-7. [`get_version`](#7-get_version---server-information) - Get server version and configuration
+3. [`review_pending_changes`](#3-review_pending_changes---pre-commit-validation) - Validate git changes before committing
+4. [`debug_issue`](#4-debug_issue---expert-debugging-assistant) - Root cause analysis and debugging
+5. [`analyze`](#5-analyze---smart-file-analysis) - General-purpose file and code analysis
+6. [`chat`](#6-chat---general-development-chat--collaborative-thinking) - Collaborative thinking and development conversations
+7. [`list_models`](#7-list_models---see-available-gemini-models) - List available Gemini models
+8. [`get_version`](#8-get_version---server-information) - Get server version and configuration
 
 ### 1. `think_deeper` - Extended Reasoning Partner
 
@@ -203,7 +205,48 @@ make any necessary adjustments and show me the final secure implementation."
 
 **Triggers:** review code, check for issues, find bugs, security check
 
-### 3. `debug_issue` - Expert Debugging Assistant
+### 3. `review_pending_changes` - Pre-Commit Validation
+**Comprehensive review of staged/unstaged git changes across multiple repositories**
+
+#### Example Prompts:
+
+**Basic Usage:**
+```
+"Use gemini to review my pending changes before I commit"
+"Get gemini to validate all my git changes match the original requirements"
+"Review pending changes in the frontend/ directory"
+```
+
+**Collaborative Workflow:**
+```
+"I've implemented the user authentication feature. Use gemini to review all pending changes
+across the codebase to ensure they align with the security requirements. Fix any issues
+gemini identifies before committing."
+
+"Review all my changes for the API refactoring task. Get gemini to check for incomplete
+implementations or missing test coverage. Update the code based on gemini's findings."
+```
+
+**Key Features:**
+- **Recursive repository discovery** - finds all git repos including nested ones
+- **Validates changes against requirements** - ensures implementation matches intent
+- **Detects incomplete changes** - finds added functions never called, missing tests, etc.
+- **Multi-repo support** - reviews changes across multiple repositories in one go
+- **Configurable scope** - review staged, unstaged, or compare against branches
+- **Security focused** - catches exposed secrets, vulnerabilities in new code
+- **Smart truncation** - handles large diffs without exceeding context limits
+
+**Parameters:**
+- `path`: Starting directory to search for repos (default: current directory)
+- `original_request`: The requirements/ticket for context
+- `compare_to`: Compare against a branch/tag instead of local changes
+- `review_type`: full|security|performance|quick
+- `severity_filter`: Filter by issue severity
+- `max_depth`: How deep to search for nested repos
+
+**Triggers:** review pending changes, check my changes, validate changes, pre-commit review
+
+### 4. `debug_issue` - Expert Debugging Assistant
 **Root cause analysis for complex problems**
 
 #### Example Prompts:
@@ -235,7 +278,7 @@ suggest preventive measures."
 
 **Triggers:** debug, error, failing, root cause, trace, not working
 
-### 4. `analyze` - Smart File Analysis
+### 5. `analyze` - Smart File Analysis
 **General-purpose code understanding and exploration**
 
 #### Example Prompts:
@@ -264,7 +307,7 @@ Combine your findings with gemini's to create a comprehensive security report."
 
 **Triggers:** analyze, examine, look at, understand, inspect
 
-### 5. `chat` - General Development Chat & Collaborative Thinking
+### 6. `chat` - General Development Chat & Collaborative Thinking
 **Your thinking partner - bounce ideas, get second opinions, brainstorm collaboratively**
 
 #### Example Prompts:
@@ -296,16 +339,17 @@ Combine both perspectives to create a comprehensive caching implementation guide
 - Technology comparisons and best practices
 - Architecture and design discussions
 - Can reference files for context: `"Use gemini to explain this algorithm with context from algorithm.py"`
+- **Dynamic collaboration**: Gemini can request additional files or context during the conversation if needed for a more thorough response
 
 **Triggers:** ask, explain, compare, suggest, what about, brainstorm, discuss, share my thinking, get opinion
 
-### 6. `list_models` - See Available Gemini Models
+### 7. `list_models` - See Available Gemini Models
 ```
 "Use gemini to list available models"
 "Get gemini to show me what models I can use"
 ```
 
-### 7. `get_version` - Server Information
+### 8. `get_version` - Server Information
 ```
 "Use gemini for its version"
 "Get gemini to show server configuration"
@@ -493,6 +537,26 @@ Different tools use optimized temperature settings:
 - **`TEMPERATURE_CREATIVE`**: `0.7` - Used for deep thinking and architecture (more creative)
 
 
+## File Path Requirements
+
+**All file paths must be absolute paths.**
+
+### Setup
+1. **Use absolute paths** in all tool calls:
+   ```
+   ✅ "Use gemini to analyze /Users/you/project/src/main.py"
+   ❌ "Use gemini to analyze ./src/main.py"  (will be rejected)
+   ```
+
+2. **Set MCP_PROJECT_ROOT** to your project directory for security:
+   ```json
+   "env": {
+     "GEMINI_API_KEY": "your-key",
+     "MCP_PROJECT_ROOT": "/Users/you/project"
+   }
+   ```
+   The server only allows access to files within this directory.
+
 ## Installation
 
 1. Clone the repository:
diff --git a/demo_collaboration.py b/demo_collaboration.py
deleted file mode 100644
index d408da4..0000000
--- a/demo_collaboration.py
+++ /dev/null
@@ -1,90 +0,0 @@
-#!/usr/bin/env python3
-"""
-Demo script showing how Claude-Gemini collaboration works
-with dynamic context requests.
-
-This demonstrates how tools can request additional context
-and how Claude would handle these requests.
-"""
-
-import asyncio
-import json
-import os
-from tools.debug_issue import DebugIssueTool
-
-
-async def simulate_collaboration():
-    """Simulate a Claude-Gemini collaboration workflow"""
-    
-    print("🤝 Claude-Gemini Collaboration Demo\n")
-    print("Scenario: Claude asks Gemini to debug an import error")
-    print("-" * 50)
-    
-    # Initialize the debug tool
-    debug_tool = DebugIssueTool()
-    
-    # Step 1: Initial request without full context
-    print("\n1️⃣  Claude's initial request:")
-    print("   'Debug this ImportError - the app can't find the utils module'")
-    
-    initial_request = {
-        "error_description": "ImportError: cannot import name 'config' from 'utils'",
-        "error_context": "Error occurs on line 5 of main.py when starting the application"
-    }
-    
-    print("\n   Sending to Gemini...")
-    result = await debug_tool.execute(initial_request)
-    
-    # Parse the response
-    response = json.loads(result[0].text)
-    print(f"\n   Gemini's response status: {response['status']}")
-    
-    if response['status'] == 'requires_clarification':
-        # Gemini needs more context
-        clarification = json.loads(response['content'])
-        print("\n2️⃣  Gemini requests additional context:")
-        print(f"   Question: {clarification.get('question', 'N/A')}")
-        if 'files_needed' in clarification:
-            print(f"   Files needed: {clarification['files_needed']}")
-        
-        # Step 2: Claude provides additional context
-        print("\n3️⃣  Claude provides the requested files:")
-        enhanced_request = {
-            **initial_request,
-            "files": clarification.get('files_needed', []),
-            "runtime_info": "Python 3.11, project structure includes utils/ directory"
-        }
-        
-        print("   Re-sending with additional context...")
-        result2 = await debug_tool.execute(enhanced_request)
-        
-        final_response = json.loads(result2[0].text)
-        print(f"\n4️⃣  Gemini's final analysis (status: {final_response['status']}):")
-        if final_response['status'] == 'success':
-            print("\n" + final_response['content'][:500] + "...")
-        
-    else:
-        # Gemini had enough context initially
-        print("\n✅ Gemini provided analysis without needing additional context:")
-        print("\n" + response['content'][:500] + "...")
-    
-    print("\n" + "=" * 50)
-    print("🎯 Key Points:")
-    print("- Tools return structured JSON with status field")
-    print("- Status 'requires_clarification' triggers context request")
-    print("- Claude can then provide additional files/info")
-    print("- Enables true collaborative problem-solving!")
-
-
-async def main():
-    """Run the demo"""
-    # Check for API key
-    if not os.environ.get("GEMINI_API_KEY"):
-        print("⚠️  Note: This is a simulated demo. Set GEMINI_API_KEY for live testing.")
-        print("   The actual behavior depends on Gemini's response.\n")
-    
-    await simulate_collaboration()
-
-
-if __name__ == "__main__":
-    asyncio.run(main())
\ No newline at end of file
diff --git a/prompts/tool_prompts.py b/prompts/tool_prompts.py
index 147b221..b9254f2 100644
--- a/prompts/tool_prompts.py
+++ b/prompts/tool_prompts.py
@@ -136,3 +136,69 @@ Always approach discussions as a peer - be direct, technical, and thorough. Your
 the ideal thinking partner who helps explore ideas deeply, validates approaches, and uncovers 
 insights that might be missed in solo analysis. Think step by step through complex problems 
 and don't hesitate to explore tangential but relevant considerations."""
+
+REVIEW_PENDING_CHANGES_PROMPT = """You are an expert code change analyst specializing in pre-commit review of git diffs.
+Your role is to act as a seasoned senior developer performing a final review before code is committed.
+
+IMPORTANT: If you need additional context (e.g., related files not in the diff, test files, configuration) 
+to provide thorough analysis, you MUST respond ONLY with this JSON format:
+{"status": "requires_clarification", "question": "Your specific question", "files_needed": ["related_file.py", "tests/"]}
+
+You will receive:
+1. Git diffs showing staged/unstaged changes or branch comparisons
+2. The original request/ticket describing what should be implemented
+3. File paths and repository structure context
+
+Your review MUST focus on:
+
+## Core Analysis (Standard Review)
+- **Bugs & Logic Errors:** Off-by-one errors, null references, race conditions, incorrect assumptions
+- **Security Vulnerabilities:** Injection flaws, authentication issues, exposed secrets (CRITICAL for new additions)
+- **Performance Issues:** N+1 queries, inefficient algorithms introduced in changes
+- **Code Quality:** DRY violations, SOLID principle adherence, complexity of new code
+
+## Change-Specific Analysis (Your Unique Value)
+1. **Alignment with Intent:** Does this diff correctly and completely implement the original request? Flag any missed requirements.
+
+2. **Incomplete Changes:**
+   - New functions added but never called
+   - API endpoints defined but no client code
+   - Enums/constants added but switch/if statements not updated
+   - Dependencies added but not properly used
+
+3. **Test Coverage Gaps:** Flag new business logic lacking corresponding test changes
+
+4. **Unintended Side Effects:** Could changes in file_A break module_B even if module_B wasn't changed?
+
+5. **Documentation Mismatches:** Were docstrings/docs updated for changed function signatures?
+
+6. **Configuration Risks:** What are downstream impacts of config changes?
+
+7. **Scope Creep:** Flag changes unrelated to the original request
+
+8. **Code Removal Risks:** Was removed code truly dead, or could removal break functionality?
+
+## Output Format
+
+### Repository Summary
+For each repository with changes:
+
+**Repository: /path/to/repo**
+- Status: X files changed
+- Overall: Brief assessment and critical issues count
+
+### Issues by Severity
+[CRITICAL] Descriptive title
+- File: path/to/file.py:line
+- Description: Clear explanation
+- Fix: Specific solution with code
+
+[HIGH] Descriptive title
+...
+
+### Recommendations
+- Top priority fixes before commit
+- Suggestions for improvement
+- Good practices to preserve
+
+Be thorough but actionable. Every issue must have a clear fix. Acknowledge good changes when you see them."""
diff --git a/server.py b/server.py
index 5656476..02ccfcf 100644
--- a/server.py
+++ b/server.py
@@ -22,7 +22,14 @@ from config import (
     __updated__,
     __version__,
 )
-from tools import AnalyzeTool, ChatTool, DebugIssueTool, ReviewCodeTool, ThinkDeeperTool
+from tools import (
+    AnalyzeTool,
+    ChatTool,
+    DebugIssueTool,
+    ReviewCodeTool,
+    ReviewPendingChanges,
+    ThinkDeeperTool,
+)
 
 # Configure logging
 logging.basicConfig(level=logging.INFO)
@@ -38,6 +45,7 @@ TOOLS = {
     "debug_issue": DebugIssueTool(),
     "analyze": AnalyzeTool(),
     "chat": ChatTool(),
+    "review_pending_changes": ReviewPendingChanges(),
 }
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
index ce6b50b..ca11627 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -15,6 +15,14 @@ if str(parent_dir) not in sys.path:
 if "GEMINI_API_KEY" not in os.environ:
     os.environ["GEMINI_API_KEY"] = "dummy-key-for-tests"
 
+# Set MCP_PROJECT_ROOT to a temporary directory for tests
+# This provides a safe sandbox for file operations during testing
+import tempfile
+
+# Create a temporary directory that will be used as the project root for all tests
+test_root = tempfile.mkdtemp(prefix="gemini_mcp_test_")
+os.environ["MCP_PROJECT_ROOT"] = test_root
+
 # Configure asyncio for Windows compatibility
 if sys.platform == "win32":
     import asyncio
@@ -22,6 +30,26 @@ if sys.platform == "win32":
     asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
 
 
+# Pytest fixtures
+import pytest
+
+
+@pytest.fixture
+def project_path(tmp_path):
+    """
+    Provides a temporary directory within the PROJECT_ROOT sandbox for tests.
+    This ensures all file operations during tests are within the allowed directory.
+    """
+    # Get the test project root
+    test_root = Path(os.environ.get("MCP_PROJECT_ROOT", "/tmp"))
+
+    # Create a subdirectory for this specific test
+    test_dir = test_root / f"test_{tmp_path.name}"
+    test_dir.mkdir(parents=True, exist_ok=True)
+
+    return test_dir
+
+
 # Pytest configuration
 def pytest_configure(config):
     """Configure pytest with custom markers"""
diff --git a/tests/test_collaboration.py b/tests/test_collaboration.py
index b706d19..fe7ca7a 100644
--- a/tests/test_collaboration.py
+++ b/tests/test_collaboration.py
@@ -28,38 +28,47 @@ class TestDynamicContextRequests:
     async def test_clarification_request_parsing(self, mock_create_model, analyze_tool):
         """Test that tools correctly parse clarification requests"""
         # Mock model to return a clarification request
-        clarification_json = json.dumps({
-            "status": "requires_clarification",
-            "question": "I need to see the package.json file to understand dependencies",
-            "files_needed": ["package.json", "package-lock.json"]
-        })
-        
+        clarification_json = json.dumps(
+            {
+                "status": "requires_clarification",
+                "question": "I need to see the package.json file to understand dependencies",
+                "files_needed": ["package.json", "package-lock.json"],
+            }
+        )
+
         mock_model = Mock()
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=clarification_json)]))]
         )
         mock_create_model.return_value = mock_model
 
-        result = await analyze_tool.execute({
-            "files": ["src/index.js"],
-            "question": "Analyze the dependencies used in this project"
-        })
+        result = await analyze_tool.execute(
+            {
+                "files": ["/absolute/path/src/index.js"],
+                "question": "Analyze the dependencies used in this project",
+            }
+        )
 
         assert len(result) == 1
-        
+
         # Parse the response
         response_data = json.loads(result[0].text)
         assert response_data["status"] == "requires_clarification"
         assert response_data["content_type"] == "json"
-        
+
         # Parse the clarification request
         clarification = json.loads(response_data["content"])
-        assert clarification["question"] == "I need to see the package.json file to understand dependencies"
+        assert (
+            clarification["question"]
+            == "I need to see the package.json file to understand dependencies"
+        )
         assert clarification["files_needed"] == ["package.json", "package-lock.json"]
 
     @pytest.mark.asyncio
     @patch("tools.base.BaseTool.create_model")
-    async def test_normal_response_not_parsed_as_clarification(self, mock_create_model, debug_tool):
+    async def test_normal_response_not_parsed_as_clarification(
+        self, mock_create_model, debug_tool
+    ):
         """Test that normal responses are not mistaken for clarification requests"""
         normal_response = """
         ## Summary
@@ -70,19 +79,19 @@ class TestDynamicContextRequests:
         ### 1. Missing Import (Confidence: High)
         **Root Cause:** The module 'utils' is not imported
         """
-        
+
         mock_model = Mock()
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=normal_response)]))]
         )
         mock_create_model.return_value = mock_model
 
-        result = await debug_tool.execute({
-            "error_description": "NameError: name 'utils' is not defined"
-        })
+        result = await debug_tool.execute(
+            {"error_description": "NameError: name 'utils' is not defined"}
+        )
 
         assert len(result) == 1
-        
+
         # Parse the response
         response_data = json.loads(result[0].text)
         assert response_data["status"] == "success"
@@ -91,23 +100,26 @@ class TestDynamicContextRequests:
 
     @pytest.mark.asyncio
     @patch("tools.base.BaseTool.create_model")
-    async def test_malformed_clarification_request_treated_as_normal(self, mock_create_model, analyze_tool):
+    async def test_malformed_clarification_request_treated_as_normal(
+        self, mock_create_model, analyze_tool
+    ):
         """Test that malformed JSON clarification requests are treated as normal responses"""
-        malformed_json = '{"status": "requires_clarification", "question": "Missing closing brace"'
-        
+        malformed_json = (
+            '{"status": "requires_clarification", "question": "Missing closing brace"'
+        )
+
         mock_model = Mock()
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=malformed_json)]))]
         )
         mock_create_model.return_value = mock_model
 
-        result = await analyze_tool.execute({
-            "files": ["test.py"],
-            "question": "What does this do?"
-        })
+        result = await analyze_tool.execute(
+            {"files": ["/absolute/path/test.py"], "question": "What does this do?"}
+        )
 
         assert len(result) == 1
-        
+
         # Should be treated as normal response due to JSON parse error
         response_data = json.loads(result[0].text)
         assert response_data["status"] == "success"
@@ -115,37 +127,47 @@ class TestDynamicContextRequests:
 
     @pytest.mark.asyncio
     @patch("tools.base.BaseTool.create_model")
-    async def test_clarification_with_suggested_action(self, mock_create_model, debug_tool):
+    async def test_clarification_with_suggested_action(
+        self, mock_create_model, debug_tool
+    ):
         """Test clarification request with suggested next action"""
-        clarification_json = json.dumps({
-            "status": "requires_clarification",
-            "question": "I need to see the database configuration to diagnose the connection error",
-            "files_needed": ["config/database.yml", "src/db.py"],
-            "suggested_next_action": {
-                "tool": "debug_issue",
-                "args": {
-                    "error_description": "Connection timeout to database",
-                    "files": ["config/database.yml", "src/db.py", "logs/error.log"]
-                }
+        clarification_json = json.dumps(
+            {
+                "status": "requires_clarification",
+                "question": "I need to see the database configuration to diagnose the connection error",
+                "files_needed": ["config/database.yml", "src/db.py"],
+                "suggested_next_action": {
+                    "tool": "debug_issue",
+                    "args": {
+                        "error_description": "Connection timeout to database",
+                        "files": [
+                            "/config/database.yml",
+                            "/src/db.py",
+                            "/logs/error.log",
+                        ],
+                    },
+                },
             }
-        })
-        
+        )
+
         mock_model = Mock()
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=clarification_json)]))]
         )
         mock_create_model.return_value = mock_model
 
-        result = await debug_tool.execute({
-            "error_description": "Connection timeout to database",
-            "files": ["logs/error.log"]
-        })
+        result = await debug_tool.execute(
+            {
+                "error_description": "Connection timeout to database",
+                "files": ["/absolute/logs/error.log"],
+            }
+        )
 
         assert len(result) == 1
-        
+
         response_data = json.loads(result[0].text)
         assert response_data["status"] == "requires_clarification"
-        
+
         clarification = json.loads(response_data["content"])
         assert "suggested_next_action" in clarification
         assert clarification["suggested_next_action"]["tool"] == "debug_issue"
@@ -156,12 +178,12 @@ class TestDynamicContextRequests:
             status="success",
             content="Test content",
             content_type="markdown",
-            metadata={"tool_name": "test", "execution_time": 1.5}
+            metadata={"tool_name": "test", "execution_time": 1.5},
         )
-        
+
         json_str = output.model_dump_json()
         parsed = json.loads(json_str)
-        
+
         assert parsed["status"] == "success"
         assert parsed["content"] == "Test content"
         assert parsed["content_type"] == "markdown"
@@ -172,9 +194,9 @@ class TestDynamicContextRequests:
         request = ClarificationRequest(
             question="Need more context",
             files_needed=["file1.py", "file2.py"],
-            suggested_next_action={"tool": "analyze", "args": {}}
+            suggested_next_action={"tool": "analyze", "args": {}},
         )
-        
+
         assert request.question == "Need more context"
         assert len(request.files_needed) == 2
         assert request.suggested_next_action["tool"] == "analyze"
@@ -185,13 +207,12 @@ class TestDynamicContextRequests:
         """Test error response format"""
         mock_create_model.side_effect = Exception("API connection failed")
 
-        result = await analyze_tool.execute({
-            "files": ["test.py"],
-            "question": "Analyze this"
-        })
+        result = await analyze_tool.execute(
+            {"files": ["/absolute/path/test.py"], "question": "Analyze this"}
+        )
 
         assert len(result) == 1
-        
+
         response_data = json.loads(result[0].text)
         assert response_data["status"] == "error"
         assert "API connection failed" in response_data["content"]
@@ -206,14 +227,16 @@ class TestCollaborationWorkflow:
     async def test_dependency_analysis_triggers_clarification(self, mock_create_model):
         """Test that asking about dependencies without package files triggers clarification"""
         tool = AnalyzeTool()
-        
+
         # Mock Gemini to request package.json when asked about dependencies
-        clarification_json = json.dumps({
-            "status": "requires_clarification",
-            "question": "I need to see the package.json file to analyze npm dependencies",
-            "files_needed": ["package.json", "package-lock.json"]
-        })
-        
+        clarification_json = json.dumps(
+            {
+                "status": "requires_clarification",
+                "question": "I need to see the package.json file to analyze npm dependencies",
+                "files_needed": ["package.json", "package-lock.json"],
+            }
+        )
+
         mock_model = Mock()
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=clarification_json)]))]
@@ -221,46 +244,54 @@ class TestCollaborationWorkflow:
         mock_create_model.return_value = mock_model
 
         # Ask about dependencies with only source files
-        result = await tool.execute({
-            "files": ["src/index.js"],
-            "question": "What npm packages and versions does this project use?"
-        })
+        result = await tool.execute(
+            {
+                "files": ["/absolute/path/src/index.js"],
+                "question": "What npm packages and versions does this project use?",
+            }
+        )
 
         response = json.loads(result[0].text)
-        assert response["status"] == "requires_clarification", \
-            "Should request clarification when asked about dependencies without package files"
-        
+        assert (
+            response["status"] == "requires_clarification"
+        ), "Should request clarification when asked about dependencies without package files"
+
         clarification = json.loads(response["content"])
-        assert "package.json" in str(clarification["files_needed"]), \
-            "Should specifically request package.json"
+        assert "package.json" in str(
+            clarification["files_needed"]
+        ), "Should specifically request package.json"
 
     @pytest.mark.asyncio
     @patch("tools.base.BaseTool.create_model")
     async def test_multi_step_collaboration(self, mock_create_model):
         """Test a multi-step collaboration workflow"""
         tool = DebugIssueTool()
-        
+
         # Step 1: Initial request returns clarification needed
-        clarification_json = json.dumps({
-            "status": "requires_clarification",
-            "question": "I need to see the configuration file to understand the connection settings",
-            "files_needed": ["config.py"]
-        })
-        
+        clarification_json = json.dumps(
+            {
+                "status": "requires_clarification",
+                "question": "I need to see the configuration file to understand the connection settings",
+                "files_needed": ["config.py"],
+            }
+        )
+
         mock_model = Mock()
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=clarification_json)]))]
         )
         mock_create_model.return_value = mock_model
 
-        result1 = await tool.execute({
-            "error_description": "Database connection timeout",
-            "error_context": "Timeout after 30s"
-        })
+        result1 = await tool.execute(
+            {
+                "error_description": "Database connection timeout",
+                "error_context": "Timeout after 30s",
+            }
+        )
 
         response1 = json.loads(result1[0].text)
         assert response1["status"] == "requires_clarification"
-        
+
         # Step 2: Claude would provide additional context and re-invoke
         # This simulates the second call with more context
         final_response = """
@@ -272,17 +303,19 @@ class TestCollaborationWorkflow:
         ### 1. Incorrect Database Host (Confidence: High)
         **Root Cause:** The config.py file shows the database host is set to 'localhost' but the database is running on a different server.
         """
-        
+
         mock_model.generate_content.return_value = Mock(
             candidates=[Mock(content=Mock(parts=[Mock(text=final_response)]))]
         )
 
-        result2 = await tool.execute({
-            "error_description": "Database connection timeout",
-            "error_context": "Timeout after 30s",
-            "files": ["config.py"]  # Additional context provided
-        })
+        result2 = await tool.execute(
+            {
+                "error_description": "Database connection timeout",
+                "error_context": "Timeout after 30s",
+                "files": ["/absolute/path/config.py"],  # Additional context provided
+            }
+        )
 
         response2 = json.loads(result2[0].text)
         assert response2["status"] == "success"
-        assert "incorrect host configuration" in response2["content"].lower()
\ No newline at end of file
+        assert "incorrect host configuration" in response2["content"].lower()
diff --git a/tests/test_live_integration.py b/tests/test_live_integration.py
index b9513a7..b0bb747 100644
--- a/tests/test_live_integration.py
+++ b/tests/test_live_integration.py
@@ -77,39 +77,50 @@ async def run_manual_live_tests():
 
             # Test collaboration/clarification request
             print("\n🔄 Testing dynamic context request (collaboration)...")
-            
+
             # Create a specific test case designed to trigger clarification
             # We'll use analyze tool with a question that requires seeing files
             analyze_tool = AnalyzeTool()
-            
+
             # Ask about dependencies without providing package files
-            result = await analyze_tool.execute({
-                "files": [temp_path],  # Only Python file, no package.json
-                "question": "What npm packages and their versions does this project depend on? List all dependencies.",
-                "thinking_mode": "minimal"  # Fast test
-            })
-            
+            result = await analyze_tool.execute(
+                {
+                    "files": [temp_path],  # Only Python file, no package.json
+                    "question": "What npm packages and their versions does this project depend on? List all dependencies.",
+                    "thinking_mode": "minimal",  # Fast test
+                }
+            )
+
             if result and result[0].text:
                 response_data = json.loads(result[0].text)
                 print(f"   Response status: {response_data['status']}")
-                
-                if response_data['status'] == 'requires_clarification':
+
+                if response_data["status"] == "requires_clarification":
                     print("✅ Dynamic context request successfully triggered!")
-                    clarification = json.loads(response_data['content'])
+                    clarification = json.loads(response_data["content"])
                     print(f"   Gemini asks: {clarification.get('question', 'N/A')}")
-                    if 'files_needed' in clarification:
+                    if "files_needed" in clarification:
                         print(f"   Files requested: {clarification['files_needed']}")
                         # Verify it's asking for package-related files
-                        expected_files = ['package.json', 'package-lock.json', 'yarn.lock']
-                        if any(f in str(clarification['files_needed']) for f in expected_files):
+                        expected_files = [
+                            "package.json",
+                            "package-lock.json",
+                            "yarn.lock",
+                        ]
+                        if any(
+                            f in str(clarification["files_needed"])
+                            for f in expected_files
+                        ):
                             print("   ✅ Correctly identified missing package files!")
                         else:
                             print("   ⚠️  Unexpected files requested")
                 else:
                     # This is a failure - we specifically designed this to need clarification
                     print("❌ Expected clarification request but got direct response")
-                    print("   This suggests the dynamic context feature may not be working")
-                    print("   Response:", response_data.get('content', '')[:200])
+                    print(
+                        "   This suggests the dynamic context feature may not be working"
+                    )
+                    print("   Response:", response_data.get("content", "")[:200])
                     return False
             else:
                 print("❌ Collaboration test failed - no response")
diff --git a/tests/test_review_pending_changes.py b/tests/test_review_pending_changes.py
new file mode 100644
index 0000000..267f3d9
--- /dev/null
+++ b/tests/test_review_pending_changes.py
@@ -0,0 +1,255 @@
+"""
+Tests for the review_pending_changes tool
+"""
+
+import json
+from unittest.mock import MagicMock, Mock, patch
+
+import pytest
+
+from tools.review_pending_changes import (
+    ReviewPendingChanges,
+    ReviewPendingChangesRequest,
+)
+
+
+class TestReviewPendingChangesTool:
+    """Test the review_pending_changes tool"""
+
+    @pytest.fixture
+    def tool(self):
+        """Create tool instance"""
+        return ReviewPendingChanges()
+
+    def test_tool_metadata(self, tool):
+        """Test tool metadata"""
+        assert tool.get_name() == "review_pending_changes"
+        assert "REVIEW PENDING GIT CHANGES" in tool.get_description()
+        assert "pre-commit review" in tool.get_description()
+
+        # Check schema
+        schema = tool.get_input_schema()
+        assert schema["type"] == "object"
+        assert "path" in schema["properties"]
+        assert "original_request" in schema["properties"]
+        assert "compare_to" in schema["properties"]
+        assert "review_type" in schema["properties"]
+
+    def test_request_model_defaults(self):
+        """Test request model default values"""
+        request = ReviewPendingChangesRequest(path="/some/absolute/path")
+        assert request.path == "/some/absolute/path"
+        assert request.original_request is None
+        assert request.compare_to is None
+        assert request.include_staged is True
+        assert request.include_unstaged is True
+        assert request.review_type == "full"
+        assert request.severity_filter == "all"
+        assert request.max_depth == 5
+
+    def test_sanitize_filename(self, tool):
+        """Test filename sanitization"""
+        # Test path separators
+        assert tool._sanitize_filename("src/main.py") == "src_main.py"
+        assert tool._sanitize_filename("src\\main.py") == "src_main.py"
+
+        # Test spaces
+        assert tool._sanitize_filename("my file.py") == "my_file.py"
+
+        # Test special characters
+        assert tool._sanitize_filename("file@#$.py") == "file.py"
+
+        # Test length limit
+        long_name = "a" * 150
+        sanitized = tool._sanitize_filename(long_name)
+        assert len(sanitized) == 100
+
+    @pytest.mark.asyncio
+    async def test_relative_path_rejected(self, tool):
+        """Test that relative paths are rejected"""
+        result = await tool.execute(
+            {"path": "./relative/path", "original_request": "Test"}
+        )
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "error"
+        assert "must be absolute" in response["content"]
+        assert "./relative/path" in response["content"]
+
+    @pytest.mark.asyncio
+    @patch("tools.review_pending_changes.find_git_repositories")
+    async def test_no_repositories_found(self, mock_find_repos, tool):
+        """Test when no git repositories are found"""
+        mock_find_repos.return_value = []
+
+        request = ReviewPendingChangesRequest(path="/absolute/path/no-git")
+        result = await tool.prepare_prompt(request)
+
+        assert result == "No git repositories found in the specified path."
+        mock_find_repos.assert_called_once_with("/absolute/path/no-git", 5)
+
+    @pytest.mark.asyncio
+    @patch("tools.review_pending_changes.find_git_repositories")
+    @patch("tools.review_pending_changes.get_git_status")
+    @patch("tools.review_pending_changes.run_git_command")
+    async def test_no_changes_found(
+        self, mock_run_git, mock_status, mock_find_repos, tool
+    ):
+        """Test when repositories have no changes"""
+        mock_find_repos.return_value = ["/test/repo"]
+        mock_status.return_value = {
+            "branch": "main",
+            "ahead": 0,
+            "behind": 0,
+            "staged_files": [],
+            "unstaged_files": [],
+            "untracked_files": [],
+        }
+
+        # No staged or unstaged files
+        mock_run_git.side_effect = [
+            (True, ""),  # staged files (empty)
+            (True, ""),  # unstaged files (empty)
+        ]
+
+        request = ReviewPendingChangesRequest(path="/absolute/repo/path")
+        result = await tool.prepare_prompt(request)
+
+        assert result == "No pending changes found in any of the git repositories."
+
+    @pytest.mark.asyncio
+    @patch("tools.review_pending_changes.find_git_repositories")
+    @patch("tools.review_pending_changes.get_git_status")
+    @patch("tools.review_pending_changes.run_git_command")
+    async def test_staged_changes_review(
+        self,
+        mock_run_git,
+        mock_status,
+        mock_find_repos,
+        tool,
+    ):
+        """Test reviewing staged changes"""
+        mock_find_repos.return_value = ["/test/repo"]
+        mock_status.return_value = {
+            "branch": "feature",
+            "ahead": 1,
+            "behind": 0,
+            "staged_files": ["main.py"],
+            "unstaged_files": [],
+            "untracked_files": [],
+        }
+
+        # Mock git commands
+        mock_run_git.side_effect = [
+            (True, "main.py\n"),  # staged files
+            (
+                True,
+                "diff --git a/main.py b/main.py\n+print('hello')",
+            ),  # diff for main.py
+            (True, ""),  # unstaged files (empty)
+        ]
+
+        request = ReviewPendingChangesRequest(
+            path="/absolute/repo/path",
+            original_request="Add hello message",
+            review_type="security",
+        )
+        result = await tool.prepare_prompt(request)
+
+        # Verify result structure
+        assert "## Original Request/Ticket" in result
+        assert "Add hello message" in result
+        assert "## Review Parameters" in result
+        assert "Review Type: security" in result
+        assert "## Repository Changes Summary" in result
+        assert "Branch: feature" in result
+        assert "## Git Diffs" in result
+
+    @pytest.mark.asyncio
+    @patch("tools.review_pending_changes.find_git_repositories")
+    @patch("tools.review_pending_changes.get_git_status")
+    @patch("tools.review_pending_changes.run_git_command")
+    async def test_compare_to_invalid_ref(
+        self, mock_run_git, mock_status, mock_find_repos, tool
+    ):
+        """Test comparing to an invalid git ref"""
+        mock_find_repos.return_value = ["/test/repo"]
+        mock_status.return_value = {"branch": "main"}
+
+        # Mock git commands - ref validation fails
+        mock_run_git.side_effect = [
+            (False, "fatal: not a valid ref"),  # rev-parse fails
+        ]
+
+        request = ReviewPendingChangesRequest(
+            path="/absolute/repo/path", compare_to="invalid-branch"
+        )
+        result = await tool.prepare_prompt(request)
+
+        # When all repos have errors and no changes, we get this message
+        assert "No pending changes found in any of the git repositories." in result
+
+    @pytest.mark.asyncio
+    @patch("tools.review_pending_changes.ReviewPendingChanges.execute")
+    async def test_execute_integration(self, mock_execute, tool):
+        """Test execute method integration"""
+        # Mock the execute to return a standardized response
+        mock_execute.return_value = [
+            Mock(
+                text='{"status": "success", "content": "Review complete", "content_type": "text"}'
+            )
+        ]
+
+        result = await tool.execute({"path": ".", "review_type": "full"})
+
+        assert len(result) == 1
+        mock_execute.assert_called_once()
+
+    def test_default_temperature(self, tool):
+        """Test default temperature setting"""
+        from config import TEMPERATURE_ANALYTICAL
+
+        assert tool.get_default_temperature() == TEMPERATURE_ANALYTICAL
+
+    @pytest.mark.asyncio
+    @patch("tools.review_pending_changes.find_git_repositories")
+    @patch("tools.review_pending_changes.get_git_status")
+    @patch("tools.review_pending_changes.run_git_command")
+    async def test_mixed_staged_unstaged_changes(
+        self,
+        mock_run_git,
+        mock_status,
+        mock_find_repos,
+        tool,
+    ):
+        """Test reviewing both staged and unstaged changes"""
+        mock_find_repos.return_value = ["/test/repo"]
+        mock_status.return_value = {
+            "branch": "develop",
+            "ahead": 2,
+            "behind": 1,
+            "staged_files": ["file1.py"],
+            "unstaged_files": ["file2.py"],
+        }
+
+        # Mock git commands
+        mock_run_git.side_effect = [
+            (True, "file1.py\n"),  # staged files
+            (True, "diff --git a/file1.py..."),  # diff for file1.py
+            (True, "file2.py\n"),  # unstaged files
+            (True, "diff --git a/file2.py..."),  # diff for file2.py
+        ]
+
+
+        request = ReviewPendingChangesRequest(
+            path="/absolute/repo/path",
+            focus_on="error handling",
+            severity_filter="high",
+        )
+        result = await tool.prepare_prompt(request)
+
+        # Verify all sections are present
+        assert "Review Type: full" in result
+        assert "Severity Filter: high" in result
+        assert "Focus Areas: error handling" in result
+        assert "Reviewing: staged and unstaged changes" in result
diff --git a/tests/test_server.py b/tests/test_server.py
index 9efccb8..95ef86f 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -25,11 +25,12 @@ class TestServerTools:
         assert "debug_issue" in tool_names
         assert "analyze" in tool_names
         assert "chat" in tool_names
+        assert "review_pending_changes" in tool_names
         assert "list_models" in tool_names
         assert "get_version" in tool_names
 
-        # Should have exactly 7 tools
-        assert len(tools) == 7
+        # Should have exactly 8 tools
+        assert len(tools) == 8
 
         # Check descriptions are verbose
         for tool in tools:
diff --git a/tests/test_thinking_modes.py b/tests/test_thinking_modes.py
index 9ae1857..313836f 100644
--- a/tests/test_thinking_modes.py
+++ b/tests/test_thinking_modes.py
@@ -51,7 +51,7 @@ class TestThinkingModes:
         tool = AnalyzeTool()
         result = await tool.execute(
             {
-                "files": ["test.py"],
+                "files": ["/absolute/path/test.py"],
                 "question": "What is this?",
                 "thinking_mode": "minimal",
             }
@@ -80,7 +80,9 @@ class TestThinkingModes:
         mock_create_model.return_value = mock_model
 
         tool = ReviewCodeTool()
-        result = await tool.execute({"files": ["test.py"], "thinking_mode": "low"})
+        result = await tool.execute(
+            {"files": ["/absolute/path/test.py"], "thinking_mode": "low"}
+        )
 
         # Verify create_model was called with correct thinking_mode
         mock_create_model.assert_called_once()
@@ -129,7 +131,7 @@ class TestThinkingModes:
         tool = AnalyzeTool()
         await tool.execute(
             {
-                "files": ["complex.py"],
+                "files": ["/absolute/path/complex.py"],
                 "question": "Analyze architecture",
                 "thinking_mode": "high",
             }
diff --git a/tests/test_tools.py b/tests/test_tools.py
index a65d4ed..b4d631a 100644
--- a/tests/test_tools.py
+++ b/tests/test_tools.py
@@ -2,11 +2,12 @@
 Tests for individual tool implementations
 """
 
+import json
 from unittest.mock import Mock, patch
 
 import pytest
 
-from tools import AnalyzeTool, DebugIssueTool, ReviewCodeTool, ThinkDeeperTool
+from tools import AnalyzeTool, DebugIssueTool, ReviewCodeTool, ThinkDeeperTool, ChatTool
 
 
 class TestThinkDeeperTool:
@@ -187,3 +188,110 @@ class TestAnalyzeTool:
         assert "ARCHITECTURE Analysis" in result[0].text
         assert "Analyzed 1 file(s)" in result[0].text
         assert "Architecture analysis" in result[0].text
+
+
+class TestAbsolutePathValidation:
+    """Test absolute path validation across all tools"""
+
+    @pytest.mark.asyncio
+    async def test_analyze_tool_relative_path_rejected(self):
+        """Test that analyze tool rejects relative paths"""
+        tool = AnalyzeTool()
+        result = await tool.execute(
+            {
+                "files": ["./relative/path.py", "/absolute/path.py"],
+                "question": "What does this do?",
+            }
+        )
+
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "error"
+        assert "must be absolute" in response["content"]
+        assert "./relative/path.py" in response["content"]
+
+    @pytest.mark.asyncio
+    async def test_review_code_tool_relative_path_rejected(self):
+        """Test that review_code tool rejects relative paths"""
+        tool = ReviewCodeTool()
+        result = await tool.execute(
+            {"files": ["../parent/file.py"], "review_type": "full"}
+        )
+
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "error"
+        assert "must be absolute" in response["content"]
+        assert "../parent/file.py" in response["content"]
+
+    @pytest.mark.asyncio
+    async def test_debug_issue_tool_relative_path_rejected(self):
+        """Test that debug_issue tool rejects relative paths"""
+        tool = DebugIssueTool()
+        result = await tool.execute(
+            {
+                "error_description": "Something broke",
+                "files": ["src/main.py"],  # relative path
+            }
+        )
+
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "error"
+        assert "must be absolute" in response["content"]
+        assert "src/main.py" in response["content"]
+
+    @pytest.mark.asyncio
+    async def test_think_deeper_tool_relative_path_rejected(self):
+        """Test that think_deeper tool rejects relative paths"""
+        tool = ThinkDeeperTool()
+        result = await tool.execute(
+            {"current_analysis": "My analysis", "files": ["./local/file.py"]}
+        )
+
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "error"
+        assert "must be absolute" in response["content"]
+        assert "./local/file.py" in response["content"]
+
+    @pytest.mark.asyncio
+    async def test_chat_tool_relative_path_rejected(self):
+        """Test that chat tool rejects relative paths"""
+        tool = ChatTool()
+        result = await tool.execute(
+            {
+                "prompt": "Explain this code",
+                "files": ["code.py"],  # relative path without ./
+            }
+        )
+
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "error"
+        assert "must be absolute" in response["content"]
+        assert "code.py" in response["content"]
+
+    @pytest.mark.asyncio
+    @patch("tools.AnalyzeTool.create_model")
+    async def test_analyze_tool_accepts_absolute_paths(self, mock_model):
+        """Test that analyze tool accepts absolute paths"""
+        tool = AnalyzeTool()
+
+        # Mock the model response
+        mock_response = Mock()
+        mock_response.candidates = [Mock()]
+        mock_response.candidates[0].content.parts = [Mock(text="Analysis complete")]
+
+        mock_instance = Mock()
+        mock_instance.generate_content.return_value = mock_response
+        mock_model.return_value = mock_instance
+
+        result = await tool.execute(
+            {"files": ["/absolute/path/file.py"], "question": "What does this do?"}
+        )
+
+        assert len(result) == 1
+        response = json.loads(result[0].text)
+        assert response["status"] == "success"
+        assert "Analysis complete" in response["content"]
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 29e782e..859d6ac 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -8,9 +8,9 @@ from utils import check_token_limit, estimate_tokens, read_file_content, read_fi
 class TestFileUtils:
     """Test file reading utilities"""
 
-    def test_read_file_content_success(self, tmp_path):
+    def test_read_file_content_success(self, project_path):
         """Test successful file reading"""
-        test_file = tmp_path / "test.py"
+        test_file = project_path / "test.py"
         test_file.write_text("def hello():\n    return 'world'", encoding="utf-8")
 
         content, tokens = read_file_content(str(test_file))
@@ -20,25 +20,43 @@ class TestFileUtils:
         assert "return 'world'" in content
         assert tokens > 0  # Should have estimated tokens
 
-    def test_read_file_content_not_found(self):
+    def test_read_file_content_not_found(self, project_path):
         """Test reading non-existent file"""
-        content, tokens = read_file_content("/nonexistent/file.py")
+        # Use a non-existent file within the project path
+        nonexistent = project_path / "nonexistent" / "file.py"
+        content, tokens = read_file_content(str(nonexistent))
         assert "--- FILE NOT FOUND:" in content
         assert "Error: File does not exist" in content
         assert tokens > 0
 
-    def test_read_file_content_directory(self, tmp_path):
+    def test_read_file_content_outside_project_root(self):
+        """Test that paths outside project root are rejected"""
+        # Try to read a file outside the project root
+        content, tokens = read_file_content("/etc/passwd")
+        assert "--- ERROR ACCESSING FILE:" in content
+        assert "Path outside project root" in content
+        assert tokens > 0
+
+    def test_read_file_content_relative_path_rejected(self):
+        """Test that relative paths are rejected"""
+        # Try to use a relative path
+        content, tokens = read_file_content("./some/relative/path.py")
+        assert "--- ERROR ACCESSING FILE:" in content
+        assert "Relative paths are not supported" in content
+        assert tokens > 0
+
+    def test_read_file_content_directory(self, project_path):
         """Test reading a directory"""
-        content, tokens = read_file_content(str(tmp_path))
+        content, tokens = read_file_content(str(project_path))
         assert "--- NOT A FILE:" in content
         assert "Error: Path is not a file" in content
         assert tokens > 0
 
-    def test_read_files_multiple(self, tmp_path):
+    def test_read_files_multiple(self, project_path):
         """Test reading multiple files"""
-        file1 = tmp_path / "file1.py"
+        file1 = project_path / "file1.py"
         file1.write_text("print('file1')", encoding="utf-8")
-        file2 = tmp_path / "file2.py"
+        file2 = project_path / "file2.py"
         file2.write_text("print('file2')", encoding="utf-8")
 
         content, summary = read_files([str(file1), str(file2)])
@@ -62,23 +80,23 @@ class TestFileUtils:
 
         assert "Direct code:" in summary
 
-    def test_read_files_directory_support(self, tmp_path):
+    def test_read_files_directory_support(self, project_path):
         """Test reading all files from a directory"""
         # Create directory structure
-        (tmp_path / "file1.py").write_text("print('file1')", encoding="utf-8")
-        (tmp_path / "file2.js").write_text("console.log('file2')", encoding="utf-8")
-        (tmp_path / "readme.md").write_text("# README", encoding="utf-8")
+        (project_path / "file1.py").write_text("print('file1')", encoding="utf-8")
+        (project_path / "file2.js").write_text("console.log('file2')", encoding="utf-8")
+        (project_path / "readme.md").write_text("# README", encoding="utf-8")
 
         # Create subdirectory
-        subdir = tmp_path / "src"
+        subdir = project_path / "src"
         subdir.mkdir()
         (subdir / "module.py").write_text("class Module: pass", encoding="utf-8")
 
         # Create hidden file (should be skipped)
-        (tmp_path / ".hidden").write_text("secret", encoding="utf-8")
+        (project_path / ".hidden").write_text("secret", encoding="utf-8")
 
         # Read the directory
-        content, summary = read_files([str(tmp_path)])
+        content, summary = read_files([str(project_path)])
 
         # Check files are included
         assert "file1.py" in content
@@ -102,14 +120,14 @@ class TestFileUtils:
         assert "Processed 1 dir(s)" in summary
         assert "Read 4 file(s)" in summary
 
-    def test_read_files_mixed_paths(self, tmp_path):
+    def test_read_files_mixed_paths(self, project_path):
         """Test reading mix of files and directories"""
         # Create files
-        file1 = tmp_path / "direct.py"
+        file1 = project_path / "direct.py"
         file1.write_text("# Direct file", encoding="utf-8")
 
         # Create directory with files
-        subdir = tmp_path / "subdir"
+        subdir = project_path / "subdir"
         subdir.mkdir()
         (subdir / "sub1.py").write_text("# Sub file 1", encoding="utf-8")
         (subdir / "sub2.py").write_text("# Sub file 2", encoding="utf-8")
@@ -127,19 +145,19 @@ class TestFileUtils:
         assert "Processed 1 dir(s)" in summary
         assert "Read 3 file(s)" in summary
 
-    def test_read_files_token_limit(self, tmp_path):
+    def test_read_files_token_limit(self, project_path):
         """Test token limit handling"""
         # Create files with known token counts
         # ~250 tokens each (1000 chars)
         large_content = "x" * 1000
 
         for i in range(5):
-            (tmp_path / f"file{i}.txt").write_text(large_content, encoding="utf-8")
+            (project_path / f"file{i}.txt").write_text(large_content, encoding="utf-8")
 
         # Read with small token limit (should skip some files)
         # Reserve 50k tokens, limit to 51k total = 1k available
         # Each file ~250 tokens, so should read ~3-4 files
-        content, summary = read_files([str(tmp_path)], max_tokens=51_000)
+        content, summary = read_files([str(project_path)], max_tokens=51_000)
 
         assert "Skipped" in summary
         assert "token limit" in summary
@@ -149,10 +167,10 @@ class TestFileUtils:
         read_count = content.count("--- BEGIN FILE:")
         assert 2 <= read_count <= 4  # Should read some but not all
 
-    def test_read_files_large_file(self, tmp_path):
+    def test_read_files_large_file(self, project_path):
         """Test handling of large files"""
         # Create a file larger than max_size (1MB)
-        large_file = tmp_path / "large.txt"
+        large_file = project_path / "large.txt"
         large_file.write_text("x" * 2_000_000, encoding="utf-8")  # 2MB
 
         content, summary = read_files([str(large_file)])
@@ -161,15 +179,15 @@ class TestFileUtils:
         assert "2,000,000 bytes" in content
         assert "Read 1 file(s)" in summary  # File is counted but shows error message
 
-    def test_read_files_file_extensions(self, tmp_path):
+    def test_read_files_file_extensions(self, project_path):
         """Test file extension filtering"""
         # Create various file types
-        (tmp_path / "code.py").write_text("python", encoding="utf-8")
-        (tmp_path / "style.css").write_text("css", encoding="utf-8")
-        (tmp_path / "binary.exe").write_text("exe", encoding="utf-8")
-        (tmp_path / "image.jpg").write_text("jpg", encoding="utf-8")
+        (project_path / "code.py").write_text("python", encoding="utf-8")
+        (project_path / "style.css").write_text("css", encoding="utf-8")
+        (project_path / "binary.exe").write_text("exe", encoding="utf-8")
+        (project_path / "image.jpg").write_text("jpg", encoding="utf-8")
 
-        content, summary = read_files([str(tmp_path)])
+        content, summary = read_files([str(project_path)])
 
         # Code files should be included
         assert "code.py" in content
diff --git a/tool_selection_guide.py b/tool_selection_guide.py
deleted file mode 100644
index e9da819..0000000
--- a/tool_selection_guide.py
+++ /dev/null
@@ -1,225 +0,0 @@
-"""
-Tool Selection Guide for Gemini MCP Server
-
-This module provides guidance for Claude on which tool to use for different scenarios.
-"""
-
-TOOL_BOUNDARIES = {
-    "analyze": {
-        "purpose": "Understanding and exploration (read-only analysis)",
-        "best_for": [
-            "Understanding code structure and architecture",
-            "Exploring unfamiliar codebases",
-            "Identifying patterns and dependencies",
-            "Documenting existing functionality",
-            "Learning how systems work",
-        ],
-        "avoid_for": [
-            "Finding bugs or security issues (use review_code)",
-            "Debugging errors (use debug_issue)",
-            "Extending existing analysis (use think_deeper)",
-        ],
-        "output": "Descriptive explanations and architectural insights",
-    },
-    "review_code": {
-        "purpose": "Finding issues and suggesting fixes (prescriptive analysis)",
-        "best_for": [
-            "Finding bugs, security vulnerabilities, performance issues",
-            "Code quality assessment with actionable feedback",
-            "Pre-merge code reviews",
-            "Security audits",
-            "Performance optimization recommendations",
-        ],
-        "avoid_for": [
-            "Understanding how code works (use analyze)",
-            "Debugging runtime errors (use debug_issue)",
-            "Architectural discussions (use think_deeper or chat)",
-        ],
-        "output": "Severity-ranked issues with specific fixes",
-    },
-    "debug_issue": {
-        "purpose": "Root cause analysis for errors (diagnostic analysis)",
-        "best_for": [
-            "Analyzing runtime errors and exceptions",
-            "Troubleshooting failing tests",
-            "Investigating performance problems",
-            "Tracing execution issues",
-            "System-level debugging",
-        ],
-        "avoid_for": [
-            "Code quality issues (use review_code)",
-            "Understanding working code (use analyze)",
-            "Design discussions (use think_deeper or chat)",
-        ],
-        "output": "Ranked hypotheses with validation steps",
-    },
-    "think_deeper": {
-        "purpose": "Extending and validating specific analysis (collaborative validation)",
-        "best_for": [
-            "Getting second opinion on Claude's analysis",
-            "Challenging assumptions and finding edge cases",
-            "Validating architectural decisions",
-            "Exploring alternative approaches",
-            "Risk assessment for proposed changes",
-        ],
-        "avoid_for": [
-            "Initial analysis (use analyze first)",
-            "Bug hunting (use review_code)",
-            "Open-ended brainstorming (use chat)",
-        ],
-        "output": "Extended analysis building on existing work",
-    },
-    "chat": {
-        "purpose": "Open-ended collaboration and brainstorming (exploratory discussion)",
-        "best_for": [
-            "Brainstorming solutions and approaches",
-            "Technology comparisons and recommendations",
-            "Discussing trade-offs and design decisions",
-            "Getting opinions on implementation strategies",
-            "General development questions and explanations",
-        ],
-        "avoid_for": [
-            "Analyzing specific code files (use analyze)",
-            "Finding bugs in code (use review_code)",
-            "Debugging specific errors (use debug_issue)",
-        ],
-        "output": "Conversational insights and recommendations",
-    },
-}
-
-DECISION_FLOWCHART = """
-Tool Selection Decision Flow:
-
-1. Do you have a specific error/exception to debug?
-   → YES: Use debug_issue
-
-2. Do you want to find bugs/issues in code?
-   → YES: Use review_code
-
-3. Do you want to understand how code works?
-   → YES: Use analyze
-
-4. Do you have existing analysis that needs extension/validation?
-   → YES: Use think_deeper
-
-5. Do you want to brainstorm, discuss, or get opinions?
-   → YES: Use chat
-"""
-
-COMMON_OVERLAPS = {
-    "analyze vs review_code": {
-        "confusion": "Both examine code quality",
-        "distinction": "analyze explains, review_code prescribes fixes",
-        "rule": "Use analyze to understand, review_code to improve",
-    },
-    "chat vs think_deeper": {
-        "confusion": "Both provide collaborative thinking",
-        "distinction": "chat is open-ended, think_deeper builds on specific analysis",
-        "rule": "Use think_deeper to extend analysis, chat for open discussion",
-    },
-    "debug_issue vs review_code": {
-        "confusion": "Both find problems in code",
-        "distinction": "debug_issue diagnoses runtime errors, review_code finds static issues",
-        "rule": "Use debug_issue for 'why is this failing?', review_code for 'what could go wrong?'",
-    },
-}
-
-
-def get_tool_recommendation(intent: str, context: str = "") -> dict:
-    """
-    Recommend the best tool based on user intent and context.
-
-    Args:
-        intent: What the user wants to accomplish
-        context: Additional context about the situation
-
-    Returns:
-        Dictionary with recommended tool and reasoning
-    """
-
-    # Keywords that strongly indicate specific tools
-    debug_keywords = [
-        "error",
-        "exception",
-        "failing",
-        "crash",
-        "bug",
-        "not working",
-        "trace",
-    ]
-    review_keywords = [
-        "review",
-        "issues",
-        "problems",
-        "security",
-        "vulnerabilities",
-        "quality",
-    ]
-    analyze_keywords = [
-        "understand",
-        "how does",
-        "what is",
-        "structure",
-        "architecture",
-        "explain",
-    ]
-    deeper_keywords = [
-        "extend",
-        "validate",
-        "challenge",
-        "alternative",
-        "edge case",
-        "think deeper",
-    ]
-    chat_keywords = [
-        "brainstorm",
-        "discuss",
-        "opinion",
-        "compare",
-        "recommend",
-        "what about",
-    ]
-
-    intent_lower = intent.lower()
-
-    if any(keyword in intent_lower for keyword in debug_keywords):
-        return {
-            "tool": "debug_issue",
-            "confidence": "high",
-            "reasoning": "Intent indicates debugging/troubleshooting a specific issue",
-        }
-
-    if any(keyword in intent_lower for keyword in review_keywords):
-        return {
-            "tool": "review_code",
-            "confidence": "high",
-            "reasoning": "Intent indicates finding issues or reviewing code quality",
-        }
-
-    if any(keyword in intent_lower for keyword in analyze_keywords):
-        return {
-            "tool": "analyze",
-            "confidence": "high",
-            "reasoning": "Intent indicates understanding or exploring code",
-        }
-
-    if any(keyword in intent_lower for keyword in deeper_keywords):
-        return {
-            "tool": "think_deeper",
-            "confidence": "medium",
-            "reasoning": "Intent suggests extending or validating existing analysis",
-        }
-
-    if any(keyword in intent_lower for keyword in chat_keywords):
-        return {
-            "tool": "chat",
-            "confidence": "medium",
-            "reasoning": "Intent suggests open-ended discussion or brainstorming",
-        }
-
-    # Default to chat for ambiguous requests
-    return {
-        "tool": "chat",
-        "confidence": "low",
-        "reasoning": "Intent unclear, defaulting to conversational tool",
-    }
diff --git a/tools/__init__.py b/tools/__init__.py
index 7e08663..10402ed 100644
--- a/tools/__init__.py
+++ b/tools/__init__.py
@@ -6,6 +6,7 @@ from .analyze import AnalyzeTool
 from .chat import ChatTool
 from .debug_issue import DebugIssueTool
 from .review_code import ReviewCodeTool
+from .review_pending_changes import ReviewPendingChanges
 from .think_deeper import ThinkDeeperTool
 
 __all__ = [
@@ -14,4 +15,5 @@ __all__ = [
     "DebugIssueTool",
     "AnalyzeTool",
     "ChatTool",
+    "ReviewPendingChanges",
 ]
diff --git a/tools/analyze.py b/tools/analyze.py
index 043edc2..3887f0c 100644
--- a/tools/analyze.py
+++ b/tools/analyze.py
@@ -16,7 +16,9 @@ from .base import BaseTool, ToolRequest
 class AnalyzeRequest(ToolRequest):
     """Request model for analyze tool"""
 
-    files: List[str] = Field(..., description="Files or directories to analyze")
+    files: List[str] = Field(
+        ..., description="Files or directories to analyze (must be absolute paths)"
+    )
     question: str = Field(..., description="What to analyze or look for")
     analysis_type: Optional[str] = Field(
         None,
@@ -50,7 +52,7 @@ class AnalyzeTool(BaseTool):
                 "files": {
                     "type": "array",
                     "items": {"type": "string"},
-                    "description": "Files or directories to analyze",
+                    "description": "Files or directories to analyze (must be absolute paths)",
                 },
                 "question": {
                     "type": "string",
diff --git a/tools/base.py b/tools/base.py
index 587dd6f..c71b403 100644
--- a/tools/base.py
+++ b/tools/base.py
@@ -71,6 +71,32 @@ class BaseTool(ABC):
         """Return the Pydantic model for request validation"""
         pass
 
+    def validate_file_paths(self, request) -> Optional[str]:
+        """
+        Validate that all file paths in the request are absolute.
+        Returns error message if validation fails, None if all paths are valid.
+        """
+        # Check if request has 'files' attribute
+        if hasattr(request, "files") and request.files:
+            for file_path in request.files:
+                if not os.path.isabs(file_path):
+                    return (
+                        f"Error: All file paths must be absolute. "
+                        f"Received relative path: {file_path}\n"
+                        f"Please provide the full absolute path starting with '/'"
+                    )
+
+        # Check if request has 'path' attribute (for review_pending_changes)
+        if hasattr(request, "path") and request.path:
+            if not os.path.isabs(request.path):
+                return (
+                    f"Error: Path must be absolute. "
+                    f"Received relative path: {request.path}\n"
+                    f"Please provide the full absolute path starting with '/'"
+                )
+
+        return None
+
     async def execute(self, arguments: Dict[str, Any]) -> List[TextContent]:
         """Execute the tool with given arguments"""
         try:
@@ -78,6 +104,16 @@ class BaseTool(ABC):
             request_model = self.get_request_model()
             request = request_model(**arguments)
 
+            # Validate file paths
+            path_error = self.validate_file_paths(request)
+            if path_error:
+                error_output = ToolOutput(
+                    status="error",
+                    content=path_error,
+                    content_type="text",
+                )
+                return [TextContent(type="text", text=error_output.model_dump_json())]
+
             # Prepare the prompt
             prompt = await self.prepare_prompt(request)
 
diff --git a/tools/chat.py b/tools/chat.py
index e2fe5f6..91d287b 100644
--- a/tools/chat.py
+++ b/tools/chat.py
@@ -20,8 +20,9 @@ class ChatRequest(ToolRequest):
         ...,
         description="Your question, topic, or current thinking to discuss with Gemini",
     )
-    context_files: Optional[List[str]] = Field(
-        default_factory=list, description="Optional files for context"
+    files: Optional[List[str]] = Field(
+        default_factory=list,
+        description="Optional files for context (must be absolute paths)",
     )
 
 
@@ -49,10 +50,10 @@ class ChatTool(BaseTool):
                     "type": "string",
                     "description": "Your question, topic, or current thinking to discuss with Gemini",
                 },
-                "context_files": {
+                "files": {
                     "type": "array",
                     "items": {"type": "string"},
-                    "description": "Optional files for context",
+                    "description": "Optional files for context (must be absolute paths)",
                 },
                 "temperature": {
                     "type": "number",
@@ -83,8 +84,8 @@ class ChatTool(BaseTool):
         user_content = request.prompt
 
         # Add context files if provided
-        if request.context_files:
-            file_content, _ = read_files(request.context_files)
+        if request.files:
+            file_content, _ = read_files(request.files)
             user_content = f"{request.prompt}\n\n=== CONTEXT FILES ===\n{file_content}\n=== END CONTEXT ==="
 
         # Check token limits
diff --git a/tools/debug_issue.py b/tools/debug_issue.py
index 1db99d1..defbb63 100644
--- a/tools/debug_issue.py
+++ b/tools/debug_issue.py
@@ -23,7 +23,8 @@ class DebugIssueRequest(ToolRequest):
         None, description="Stack trace, logs, or additional error context"
     )
     files: Optional[List[str]] = Field(
-        None, description="Files or directories that might be related to the issue"
+        None,
+        description="Files or directories that might be related to the issue (must be absolute paths)",
     )
     runtime_info: Optional[str] = Field(
         None, description="Environment, versions, or runtime information"
@@ -63,7 +64,7 @@ class DebugIssueTool(BaseTool):
                 "files": {
                     "type": "array",
                     "items": {"type": "string"},
-                    "description": "Files or directories that might be related to the issue",
+                    "description": "Files or directories that might be related to the issue (must be absolute paths)",
                 },
                 "runtime_info": {
                     "type": "string",
diff --git a/tools/review_code.py b/tools/review_code.py
index 11f619f..085f112 100644
--- a/tools/review_code.py
+++ b/tools/review_code.py
@@ -16,7 +16,10 @@ from .base import BaseTool, ToolRequest
 class ReviewCodeRequest(ToolRequest):
     """Request model for review_code tool"""
 
-    files: List[str] = Field(..., description="Code files or directories to review")
+    files: List[str] = Field(
+        ...,
+        description="Code files or directories to review (must be absolute paths)",
+    )
     review_type: str = Field(
         "full", description="Type of review: full|security|performance|quick"
     )
@@ -55,7 +58,7 @@ class ReviewCodeTool(BaseTool):
                 "files": {
                     "type": "array",
                     "items": {"type": "string"},
-                    "description": "Code files or directories to review",
+                    "description": "Code files or directories to review (must be absolute paths)",
                 },
                 "review_type": {
                     "type": "string",
diff --git a/tools/review_pending_changes.py b/tools/review_pending_changes.py
new file mode 100644
index 0000000..0902c58
--- /dev/null
+++ b/tools/review_pending_changes.py
@@ -0,0 +1,334 @@
+"""
+Tool for reviewing pending git changes across multiple repositories.
+"""
+
+import json
+import os
+import re
+from typing import Any, Dict, List, Literal, Optional
+
+from pydantic import Field
+
+from config import MAX_CONTEXT_TOKENS
+from prompts.tool_prompts import REVIEW_PENDING_CHANGES_PROMPT
+from utils.git_utils import find_git_repositories, get_git_status, run_git_command
+from utils.token_utils import estimate_tokens
+
+from .base import BaseTool, ToolRequest
+
+
+class ReviewPendingChangesRequest(ToolRequest):
+    """Request model for review_pending_changes tool"""
+
+    path: str = Field(
+        ...,
+        description="Starting directory to search for git repositories (must be absolute path).",
+    )
+    original_request: Optional[str] = Field(
+        None,
+        description="The original user request or ticket description for the changes. Provides critical context for the review.",
+    )
+    compare_to: Optional[str] = Field(
+        None,
+        description="Optional: A git ref (branch, tag, commit hash) to compare against. If not provided, reviews local staged and unstaged changes.",
+    )
+    include_staged: bool = Field(
+        True,
+        description="Include staged changes in the review. Only applies if 'compare_to' is not set.",
+    )
+    include_unstaged: bool = Field(
+        True,
+        description="Include uncommitted (unstaged) changes in the review. Only applies if 'compare_to' is not set.",
+    )
+    focus_on: Optional[str] = Field(
+        None,
+        description="Specific aspects to focus on (e.g., 'logic for user authentication', 'database query efficiency').",
+    )
+    review_type: Literal["full", "security", "performance", "quick"] = Field(
+        "full", description="Type of review to perform on the changes."
+    )
+    severity_filter: Literal["critical", "high", "medium", "all"] = Field(
+        "all",
+        description="Minimum severity level to report on the changes.",
+    )
+    max_depth: int = Field(
+        5,
+        description="Maximum depth to search for nested git repositories to prevent excessive recursion.",
+    )
+    temperature: Optional[float] = Field(
+        None,
+        description="Temperature for the response (0.0 to 1.0). Lower values are more focused and deterministic.",
+        ge=0.0,
+        le=1.0,
+    )
+    thinking_mode: Optional[Literal["minimal", "low", "medium", "high", "max"]] = Field(
+        None, description="Thinking depth mode for the assistant."
+    )
+
+
+class ReviewPendingChanges(BaseTool):
+    """Tool for reviewing pending git changes across multiple repositories."""
+
+    def get_name(self) -> str:
+        return "review_pending_changes"
+
+    def get_description(self) -> str:
+        return (
+            "REVIEW PENDING GIT CHANGES - Comprehensive pre-commit review of staged/unstaged changes "
+            "or branch comparisons across multiple repositories. Searches recursively for git repos "
+            "and analyzes diffs for bugs, security issues, incomplete implementations, and alignment "
+            "with original requirements. Perfect for final review before committing. "
+            "Triggers: 'review pending changes', 'check my changes', 'validate changes', 'pre-commit review'. "
+            "Use this when you want to ensure changes are complete, correct, and ready to commit."
+        )
+
+    def get_input_schema(self) -> Dict[str, Any]:
+        return self.get_request_model().model_json_schema()
+
+    def get_system_prompt(self) -> str:
+        return REVIEW_PENDING_CHANGES_PROMPT
+
+    def get_request_model(self):
+        return ReviewPendingChangesRequest
+
+    def get_default_temperature(self) -> float:
+        """Use analytical temperature for code review."""
+        from config import TEMPERATURE_ANALYTICAL
+
+        return TEMPERATURE_ANALYTICAL
+
+    def _sanitize_filename(self, name: str) -> str:
+        """Sanitize a string to be a valid filename."""
+        # Replace path separators and other problematic characters
+        name = name.replace("/", "_").replace("\\", "_").replace(" ", "_")
+        # Remove any remaining non-alphanumeric characters except dots, dashes, underscores
+        name = re.sub(r"[^a-zA-Z0-9._-]", "", name)
+        # Limit length to avoid filesystem issues
+        return name[:100]
+
+    async def prepare_prompt(self, request: ReviewPendingChangesRequest) -> str:
+        """Prepare the prompt with git diff information."""
+        # Find all git repositories
+        repositories = find_git_repositories(request.path, request.max_depth)
+
+        if not repositories:
+            return "No git repositories found in the specified path."
+
+        # Collect all diffs directly
+        all_diffs = []
+        repo_summaries = []
+        total_tokens = 0
+        max_tokens = MAX_CONTEXT_TOKENS - 50000  # Reserve tokens for prompt and response
+
+        for repo_path in repositories:
+            repo_name = os.path.basename(repo_path) or "root"
+            repo_name = self._sanitize_filename(repo_name)
+
+            # Get status information
+            status = get_git_status(repo_path)
+            changed_files = []
+
+            # Process based on mode
+            if request.compare_to:
+                # Validate the ref
+                is_valid_ref, err_msg = run_git_command(
+                    repo_path,
+                    ["rev-parse", "--verify", "--quiet", request.compare_to],
+                )
+                if not is_valid_ref:
+                    repo_summaries.append(
+                        {
+                            "path": repo_path,
+                            "error": f"Invalid or unknown git ref '{request.compare_to}': {err_msg}",
+                            "changed_files": 0,
+                        }
+                    )
+                    continue
+
+                # Get list of changed files
+                success, files_output = run_git_command(
+                    repo_path,
+                    ["diff", "--name-only", f"{request.compare_to}...HEAD"],
+                )
+                if success and files_output.strip():
+                    changed_files = [
+                        f for f in files_output.strip().split("\n") if f
+                    ]
+
+                    # Generate per-file diffs
+                    for file_path in changed_files:
+                        success, diff = run_git_command(
+                            repo_path,
+                            [
+                                "diff",
+                                f"{request.compare_to}...HEAD",
+                                "--",
+                                file_path,
+                            ],
+                        )
+                        if success and diff.strip():
+                            # Format diff with file header
+                            safe_file_name = self._sanitize_filename(file_path)
+                            diff_header = f"\n--- BEGIN DIFF: {repo_name} / {file_path} (compare to {request.compare_to}) ---\n"
+                            diff_footer = f"\n--- END DIFF: {repo_name} / {file_path} ---\n"
+                            formatted_diff = diff_header + diff + diff_footer
+                            
+                            # Check token limit
+                            diff_tokens = estimate_tokens(formatted_diff)
+                            if total_tokens + diff_tokens <= max_tokens:
+                                all_diffs.append(formatted_diff)
+                                total_tokens += diff_tokens
+            else:
+                # Handle staged/unstaged changes
+                staged_files = []
+                unstaged_files = []
+
+                if request.include_staged:
+                    success, files_output = run_git_command(
+                        repo_path, ["diff", "--name-only", "--cached"]
+                    )
+                    if success and files_output.strip():
+                        staged_files = [
+                            f for f in files_output.strip().split("\n") if f
+                        ]
+
+                        # Generate per-file diffs for staged changes
+                        for file_path in staged_files:
+                            success, diff = run_git_command(
+                                repo_path, ["diff", "--cached", "--", file_path]
+                            )
+                            if success and diff.strip():
+                                safe_file_name = self._sanitize_filename(file_path)
+                                diff_header = f"\n--- BEGIN DIFF: {repo_name} / {file_path} (staged) ---\n"
+                                diff_footer = f"\n--- END DIFF: {repo_name} / {file_path} ---\n"
+                                formatted_diff = diff_header + diff + diff_footer
+                                
+                                # Check token limit
+                                from utils import estimate_tokens
+                                diff_tokens = estimate_tokens(formatted_diff)
+                                if total_tokens + diff_tokens <= max_tokens:
+                                    all_diffs.append(formatted_diff)
+                                    total_tokens += diff_tokens
+
+                if request.include_unstaged:
+                    success, files_output = run_git_command(
+                        repo_path, ["diff", "--name-only"]
+                    )
+                    if success and files_output.strip():
+                        unstaged_files = [
+                            f for f in files_output.strip().split("\n") if f
+                        ]
+
+                        # Generate per-file diffs for unstaged changes
+                        for file_path in unstaged_files:
+                            success, diff = run_git_command(
+                                repo_path, ["diff", "--", file_path]
+                            )
+                            if success and diff.strip():
+                                safe_file_name = self._sanitize_filename(file_path)
+                                diff_header = f"\n--- BEGIN DIFF: {repo_name} / {file_path} (unstaged) ---\n"
+                                diff_footer = f"\n--- END DIFF: {repo_name} / {file_path} ---\n"
+                                formatted_diff = diff_header + diff + diff_footer
+                                
+                                # Check token limit
+                                from utils import estimate_tokens
+                                diff_tokens = estimate_tokens(formatted_diff)
+                                if total_tokens + diff_tokens <= max_tokens:
+                                    all_diffs.append(formatted_diff)
+                                    total_tokens += diff_tokens
+
+                # Combine unique files
+                changed_files = list(set(staged_files + unstaged_files))
+
+            # Add repository summary
+            if changed_files:
+                repo_summaries.append(
+                    {
+                        "path": repo_path,
+                        "branch": status["branch"],
+                        "ahead": status["ahead"],
+                        "behind": status["behind"],
+                        "changed_files": len(changed_files),
+                        "files": changed_files[:20],  # First 20 for summary
+                    }
+                )
+
+        if not all_diffs:
+            return "No pending changes found in any of the git repositories."
+
+        # Build the final prompt
+        prompt_parts = []
+
+        # Add original request context if provided
+        if request.original_request:
+            prompt_parts.append(
+                f"## Original Request/Ticket\n\n{request.original_request}\n"
+            )
+
+        # Add review parameters
+        prompt_parts.append(f"## Review Parameters\n")
+        prompt_parts.append(f"- Review Type: {request.review_type}")
+        prompt_parts.append(f"- Severity Filter: {request.severity_filter}")
+
+        if request.focus_on:
+            prompt_parts.append(f"- Focus Areas: {request.focus_on}")
+
+        if request.compare_to:
+            prompt_parts.append(f"- Comparing Against: {request.compare_to}")
+        else:
+            review_scope = []
+            if request.include_staged:
+                review_scope.append("staged")
+            if request.include_unstaged:
+                review_scope.append("unstaged")
+            prompt_parts.append(
+                f"- Reviewing: {' and '.join(review_scope)} changes"
+            )
+
+        # Add repository summary
+        prompt_parts.append(f"\n## Repository Changes Summary\n")
+        prompt_parts.append(
+            f"Found {len(repo_summaries)} repositories with changes:\n"
+        )
+
+        for idx, summary in enumerate(repo_summaries, 1):
+            prompt_parts.append(f"\n### Repository {idx}: {summary['path']}")
+            if "error" in summary:
+                prompt_parts.append(f"⚠️ Error: {summary['error']}")
+            else:
+                prompt_parts.append(f"- Branch: {summary['branch']}")
+                if summary["ahead"] or summary["behind"]:
+                    prompt_parts.append(
+                        f"- Ahead: {summary['ahead']}, Behind: {summary['behind']}"
+                    )
+                prompt_parts.append(f"- Changed Files: {summary['changed_files']}")
+
+                if summary["files"]:
+                    prompt_parts.append("\nChanged files:")
+                    for file in summary["files"]:
+                        prompt_parts.append(f"  - {file}")
+                    if summary["changed_files"] > len(summary["files"]):
+                        prompt_parts.append(
+                            f"  ... and {summary['changed_files'] - len(summary['files'])} more files"
+                        )
+
+        # Add token usage summary
+        if total_tokens > 0:
+            prompt_parts.append(f"\nTotal diff tokens: ~{total_tokens:,}")
+
+        # Add the diff contents
+        prompt_parts.append("\n## Git Diffs\n")
+        if all_diffs:
+            prompt_parts.extend(all_diffs)
+        else:
+            prompt_parts.append("--- NO DIFFS FOUND ---")
+
+        # Add review instructions
+        prompt_parts.append("\n## Review Instructions\n")
+        prompt_parts.append(
+            "Please review these changes according to the system prompt guidelines. "
+            "Pay special attention to alignment with the original request, completeness of implementation, "
+            "potential bugs, security issues, and any edge cases not covered."
+        )
+
+        return "\n".join(prompt_parts)
diff --git a/tools/think_deeper.py b/tools/think_deeper.py
index 178d242..7343818 100644
--- a/tools/think_deeper.py
+++ b/tools/think_deeper.py
@@ -27,7 +27,8 @@ class ThinkDeeperRequest(ToolRequest):
         description="Specific aspects to focus on (architecture, performance, security, etc.)",
     )
     files: Optional[List[str]] = Field(
-        None, description="Optional file paths or directories for additional context"
+        None,
+        description="Optional file paths or directories for additional context (must be absolute paths)",
     )
 
 
@@ -66,7 +67,7 @@ class ThinkDeeperTool(BaseTool):
                 "files": {
                     "type": "array",
                     "items": {"type": "string"},
-                    "description": "Optional file paths or directories for additional context",
+                    "description": "Optional file paths or directories for additional context (must be absolute paths)",
                 },
                 "temperature": {
                     "type": "number",
diff --git a/utils/file_utils.py b/utils/file_utils.py
index 25a4e9f..1ccffc6 100644
--- a/utils/file_utils.py
+++ b/utils/file_utils.py
@@ -5,9 +5,21 @@ File reading utilities with directory support and token management
 import os
 from pathlib import Path
 from typing import List, Optional, Tuple, Set
+import sys
 
 from .token_utils import estimate_tokens, MAX_CONTEXT_TOKENS
 
+# Get project root from environment or use current directory
+# This defines the sandbox directory where file access is allowed
+PROJECT_ROOT = Path(os.environ.get("MCP_PROJECT_ROOT", os.getcwd())).resolve()
+
+# Security: Prevent running with overly permissive root
+if str(PROJECT_ROOT) == "/":
+    raise RuntimeError(
+        "Security Error: MCP_PROJECT_ROOT cannot be set to '/'. "
+        "This would give access to the entire filesystem."
+    )
+
 
 # Common code file extensions
 CODE_EXTENSIONS = {
@@ -60,6 +72,46 @@ CODE_EXTENSIONS = {
 }
 
 
+def resolve_and_validate_path(path_str: str) -> Path:
+    """
+    Validates that a path is absolute and resolves it.
+
+    Args:
+        path_str: Path string (must be absolute)
+
+    Returns:
+        Resolved Path object
+
+    Raises:
+        ValueError: If path is not absolute
+        PermissionError: If path is outside allowed directory
+    """
+    # Create a Path object from the user-provided path
+    user_path = Path(path_str)
+
+    # Require absolute paths
+    if not user_path.is_absolute():
+        raise ValueError(
+            f"Relative paths are not supported. Please provide an absolute path.\n"
+            f"Received: {path_str}"
+        )
+
+    # Resolve the absolute path
+    resolved_path = user_path.resolve()
+
+    # Security check: ensure the resolved path is within PROJECT_ROOT
+    try:
+        resolved_path.relative_to(PROJECT_ROOT)
+    except ValueError:
+        raise PermissionError(
+            f"Path outside project root: {path_str}\n"
+            f"Project root: {PROJECT_ROOT}\n"
+            f"Resolved path: {resolved_path}"
+        )
+
+    return resolved_path
+
+
 def expand_paths(paths: List[str], extensions: Optional[Set[str]] = None) -> List[str]:
     """
     Expand paths to individual files, handling both files and directories.
@@ -78,7 +130,11 @@ def expand_paths(paths: List[str], extensions: Optional[Set[str]] = None) -> Lis
     seen = set()
 
     for path in paths:
-        path_obj = Path(path)
+        try:
+            path_obj = resolve_and_validate_path(path)
+        except (ValueError, PermissionError):
+            # Skip invalid paths
+            continue
 
         if not path_obj.exists():
             continue
@@ -121,13 +177,17 @@ def read_file_content(file_path: str, max_size: int = 1_000_000) -> Tuple[str, i
     Read a single file and format it for Gemini.
 
     Args:
-        file_path: Path to file
+        file_path: Path to file (must be absolute)
         max_size: Maximum file size to read
 
     Returns:
         (formatted_content, estimated_tokens)
     """
-    path = Path(file_path)
+    try:
+        path = resolve_and_validate_path(file_path)
+    except (ValueError, PermissionError) as e:
+        content = f"\n--- ERROR ACCESSING FILE: {file_path} ---\nError: {str(e)}\n--- END FILE ---\n"
+        return content, estimate_tokens(content)
 
     try:
         # Check if path exists and is a file
diff --git a/utils/git_utils.py b/utils/git_utils.py
new file mode 100644
index 0000000..c988b15
--- /dev/null
+++ b/utils/git_utils.py
@@ -0,0 +1,164 @@
+"""
+Git utilities for finding repositories and generating diffs.
+"""
+
+import os
+import subprocess
+from typing import Dict, List, Optional, Tuple
+from pathlib import Path
+
+
+# Directories to ignore when searching for git repositories
+IGNORED_DIRS = {
+    "node_modules",
+    "__pycache__",
+    "venv",
+    "env",
+    "build",
+    "dist",
+    "target",
+    ".tox",
+    ".pytest_cache",
+}
+
+
+def find_git_repositories(start_path: str, max_depth: int = 5) -> List[str]:
+    """
+    Recursively find all git repositories starting from the given path.
+
+    Args:
+        start_path: Directory to start searching from
+        max_depth: Maximum depth to search (prevents excessive recursion)
+
+    Returns:
+        List of absolute paths to git repositories
+    """
+    repositories = []
+    start_path = Path(start_path).resolve()
+
+    def _find_repos(current_path: Path, current_depth: int):
+        if current_depth > max_depth:
+            return
+
+        try:
+            # Check if current directory is a git repo
+            git_dir = current_path / ".git"
+            if git_dir.exists() and git_dir.is_dir():
+                repositories.append(str(current_path))
+                # Don't search inside .git directory
+                return
+
+            # Search subdirectories
+            for item in current_path.iterdir():
+                if item.is_dir() and not item.name.startswith("."):
+                    # Skip common non-code directories
+                    if item.name in IGNORED_DIRS:
+                        continue
+                    _find_repos(item, current_depth + 1)
+
+        except PermissionError:
+            # Skip directories we can't access
+            pass
+
+    _find_repos(start_path, 0)
+    return sorted(repositories)
+
+
+def run_git_command(repo_path: str, command: List[str]) -> Tuple[bool, str]:
+    """
+    Run a git command in the specified repository.
+
+    Args:
+        repo_path: Path to the git repository
+        command: Git command as a list of arguments
+
+    Returns:
+        Tuple of (success, output/error)
+    """
+    try:
+        result = subprocess.run(
+            ["git"] + command, cwd=repo_path, capture_output=True, text=True, timeout=30
+        )
+
+        if result.returncode == 0:
+            return True, result.stdout
+        else:
+            return False, result.stderr
+
+    except subprocess.TimeoutExpired:
+        return False, "Command timed out"
+    except Exception as e:
+        return False, str(e)
+
+
+def get_git_status(repo_path: str) -> Dict[str, any]:
+    """
+    Get the current git status of a repository.
+
+    Args:
+        repo_path: Path to the git repository
+
+    Returns:
+        Dictionary with status information
+    """
+    status = {
+        "branch": "",
+        "ahead": 0,
+        "behind": 0,
+        "staged_files": [],
+        "unstaged_files": [],
+        "untracked_files": [],
+    }
+
+    # Get current branch
+    success, branch = run_git_command(repo_path, ["branch", "--show-current"])
+    if success:
+        status["branch"] = branch.strip()
+
+    # Get ahead/behind info
+    if status["branch"]:
+        success, ahead_behind = run_git_command(
+            repo_path,
+            [
+                "rev-list",
+                "--count",
+                "--left-right",
+                f'{status["branch"]}@{{upstream}}...HEAD',
+            ],
+        )
+        if success:
+            if ahead_behind.strip():
+                parts = ahead_behind.strip().split()
+                if len(parts) == 2:
+                    status["behind"] = int(parts[0])
+                    status["ahead"] = int(parts[1])
+        # else: Could not get ahead/behind status (branch may not have upstream)
+
+    # Get file status
+    success, status_output = run_git_command(repo_path, ["status", "--porcelain"])
+    if success:
+        for line in status_output.strip().split("\n"):
+            if not line:
+                continue
+
+            status_code = line[:2]
+            path_info = line[3:]
+
+            # Handle staged changes
+            if status_code[0] == "R":
+                # Format is "old_path -> new_path" for renamed files
+                if " -> " in path_info:
+                    _, new_path = path_info.split(" -> ", 1)
+                    status["staged_files"].append(new_path)
+                else:
+                    status["staged_files"].append(path_info)
+            elif status_code[0] in ["M", "A", "D", "C"]:
+                status["staged_files"].append(path_info)
+
+            # Handle unstaged changes
+            if status_code[1] in ["M", "D"]:
+                status["unstaged_files"].append(path_info)
+            elif status_code == "??":
+                status["untracked_files"].append(path_info)
+
+    return status