diff --git a/config.py b/config.py
index f995bc3..75135b2 100644
--- a/config.py
+++ b/config.py
@@ -14,7 +14,7 @@ import os
 # These values are used in server responses and for tracking releases
 # IMPORTANT: This is the single source of truth for version and author info
 # Semantic versioning: MAJOR.MINOR.PATCH
-__version__ = "5.7.3"
+__version__ = "5.7.4"
 # Last update date in ISO format
 __updated__ = "2025-06-27"
 # Primary maintainer
diff --git a/providers/openrouter.py b/providers/openrouter.py
index 18d3d5e..b5e6ea7 100644
--- a/providers/openrouter.py
+++ b/providers/openrouter.py
@@ -178,6 +178,11 @@ class OpenRouterProvider(OpenAICompatibleProvider):
         # Resolve model alias to actual OpenRouter model name
         resolved_model = self._resolve_model_name(model_name)
 
+        # Always disable streaming for OpenRouter
+        # MCP doesn't use streaming, and this avoids issues with O3 model access
+        if "stream" not in kwargs:
+            kwargs["stream"] = False
+
         # Call parent method with resolved model name
         return super().generate_content(
             prompt=prompt,
diff --git a/pyproject.toml b/pyproject.toml
index 303a47e..b3e715b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,31 @@
+[project]
+name = "zen-mcp-server"
+version = "0.1.0"
+description = "AI-powered MCP server with multiple model providers"
+requires-python = ">=3.9"
+dependencies = [
+    "mcp>=1.0.0",
+    "google-genai>=1.19.0",
+    "openai>=1.55.2",
+    "pydantic>=2.0.0",
+    "python-dotenv>=1.0.0",
+]
+
+[tool.setuptools.packages.find]
+include = ["tools*", "providers*", "systemprompts*", "utils*"]
+
+[tool.setuptools]
+py-modules = ["server", "config"]
+
+[tool.setuptools.package-data]
+"*" = ["conf/*.json"]
+
+[tool.setuptools.data-files]
+"conf" = ["conf/custom_models.json"]
+
+[project.scripts]
+zen-mcp-server = "server:run"
+
 [tool.black]
 line-length = 120
 target-version = ['py39', 'py310', 'py311', 'py312', 'py313']
@@ -57,4 +85,4 @@ ignore = [
 
 [build-system]
 requires = ["setuptools>=45", "wheel", "setuptools_scm[toml]>=6.2"]
-build-backend = "setuptools.build_meta"
\ No newline at end of file
+build-backend = "setuptools.build_meta"
diff --git a/server.py b/server.py
index 32ec5b9..ee1e37b 100644
--- a/server.py
+++ b/server.py
@@ -28,13 +28,20 @@ from logging.handlers import RotatingFileHandler
 from pathlib import Path
 from typing import Any, Optional
 
-from dotenv import load_dotenv
-
-# Load environment variables from .env file in the script's directory
-# This ensures .env is loaded regardless of the current working directory
-script_dir = Path(__file__).parent
-env_file = script_dir / ".env"
-load_dotenv(dotenv_path=env_file)
+# Try to load environment variables from .env file if dotenv is available
+# This is optional - environment variables can still be passed directly
+try:
+    from dotenv import load_dotenv
+    
+    # Load environment variables from .env file in the script's directory
+    # This ensures .env is loaded regardless of the current working directory
+    script_dir = Path(__file__).parent
+    env_file = script_dir / ".env"
+    load_dotenv(dotenv_path=env_file)
+except ImportError:
+    # dotenv not available - this is fine, environment variables can still be passed directly
+    # This commonly happens when running via uvx or in minimal environments
+    pass
 
 from mcp.server import Server  # noqa: E402
 from mcp.server.models import InitializationOptions  # noqa: E402
@@ -362,6 +369,12 @@ def configure_providers():
     Raises:
         ValueError: If no valid API keys are found or conflicting configurations detected
     """
+    # Log environment variable status for debugging
+    logger.debug("Checking environment variables for API keys...")
+    api_keys_to_check = ["OPENAI_API_KEY", "OPENROUTER_API_KEY", "GEMINI_API_KEY", "XAI_API_KEY", "CUSTOM_API_URL"]
+    for key in api_keys_to_check:
+        value = os.getenv(key)
+        logger.debug(f"  {key}: {'[PRESENT]' if value else '[MISSING]'}")
     from providers import ModelProviderRegistry
     from providers.base import ProviderType
     from providers.custom import CustomProvider
@@ -386,10 +399,16 @@ def configure_providers():
 
     # Check for OpenAI API key
     openai_key = os.getenv("OPENAI_API_KEY")
+    logger.debug(f"OpenAI key check: key={'[PRESENT]' if openai_key else '[MISSING]'}")
     if openai_key and openai_key != "your_openai_api_key_here":
         valid_providers.append("OpenAI (o3)")
         has_native_apis = True
         logger.info("OpenAI API key found - o3 model available")
+    else:
+        if not openai_key:
+            logger.debug("OpenAI API key not found in environment")
+        else:
+            logger.debug("OpenAI API key is placeholder value")
 
     # Check for X.AI API key
     xai_key = os.getenv("XAI_API_KEY")
@@ -407,10 +426,16 @@ def configure_providers():
 
     # Check for OpenRouter API key
     openrouter_key = os.getenv("OPENROUTER_API_KEY")
+    logger.debug(f"OpenRouter key check: key={'[PRESENT]' if openrouter_key else '[MISSING]'}")
     if openrouter_key and openrouter_key != "your_openrouter_api_key_here":
         valid_providers.append("OpenRouter")
         has_openrouter = True
         logger.info("OpenRouter API key found - Multiple models available via OpenRouter")
+    else:
+        if not openrouter_key:
+            logger.debug("OpenRouter API key not found in environment")
+        else:
+            logger.debug("OpenRouter API key is placeholder value")
 
     # Check for custom API endpoint (Ollama, vLLM, etc.)
     custom_url = os.getenv("CUSTOM_API_URL")
@@ -1285,9 +1310,14 @@ async def main():
         )
 
 
-if __name__ == "__main__":
+def run():
+    """Console script entry point for zen-mcp-server."""
     try:
         asyncio.run(main())
     except KeyboardInterrupt:
         # Handle graceful shutdown
         pass
+
+
+if __name__ == "__main__":
+    run()