torbjorn/my-pal-mcp-server
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Perform prompt size checks only at the MCP boundary

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New test to confirm history build-up and system prompt does not affect prompt size checks
Also check for large prompts in focus_on
Fixed .env.example incorrectly did not comment out CUSTOM_API causing the run-server script to think at least one key exists
This commit is contained in:
Fahad
2025-06-15 10:37:08 +04:00
parent 3b03783ea7
commit 4becd70a82
14 changed files with 404 additions and 198 deletions
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36
tools/debug.py
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@@ -4,7 +4,6 @@ Debug Issue tool - Root cause analysis and debugging assistance
from typing import TYPE_CHECKING, Any, Optional
from mcp.types import TextContent
from pydantic import Field
if TYPE_CHECKING:
@@ -14,7 +13,6 @@ from config import TEMPERATURE_ANALYTICAL
from systemprompts import DEBUG_ISSUE_PROMPT
from .base import BaseTool, ToolRequest
from .models import ToolOutput
class DebugIssueRequest(ToolRequest):
@@ -122,26 +120,6 @@ class DebugIssueTool(BaseTool):
def get_request_model(self):
return DebugIssueRequest
async def execute(self, arguments: dict[str, Any]) -> list[TextContent]:
"""Override execute to check error_description and error_context size before processing"""
# First validate request
request_model = self.get_request_model()
request = request_model(**arguments)
# Check prompt size
size_check = self.check_prompt_size(request.prompt)
if size_check:
return [TextContent(type="text", text=ToolOutput(**size_check).model_dump_json())]
# Check error_context size if provided
if request.error_context:
size_check = self.check_prompt_size(request.error_context)
if size_check:
return [TextContent(type="text", text=ToolOutput(**size_check).model_dump_json())]
# Continue with normal execution
return await super().execute(arguments)
async def prepare_prompt(self, request: DebugIssueRequest) -> str:
"""Prepare the debugging prompt"""
# Check for prompt.txt in files
@@ -154,6 +132,20 @@ class DebugIssueTool(BaseTool):
else:
request.error_context = prompt_content
# Check user input sizes at MCP transport boundary (before adding internal content)
size_check = self.check_prompt_size(request.prompt)
if size_check:
from tools.models import ToolOutput
raise ValueError(f"MCP_SIZE_CHECK:{ToolOutput(**size_check).model_dump_json()}")
if request.error_context:
size_check = self.check_prompt_size(request.error_context)
if size_check:
from tools.models import ToolOutput
raise ValueError(f"MCP_SIZE_CHECK:{ToolOutput(**size_check).model_dump_json()}")
# Update request files list
if updated_files is not None:
request.files = updated_files