QuantConnect MCP Server

Instructions

Implementation Reference

• quantconnect_mcp/src/tools/backtest_tools.py:641-714 (handler)

  The core handler function for the 'list_backtests' tool. It authenticates with QuantConnect, makes a POST request to the 'backtests/list' endpoint, parses the response, and returns a structured dictionary with the list of backtests or error information.

  @mcp.tool()
  async def list_backtests(project_id: int) -> Dict[str, Any]:
      """
      List all backtests for a project.
  
      Args:
          project_id: ID of the project to list backtests from
  
      Returns:
          Dictionary containing list of backtests
      """
      auth = get_auth_instance()
      if auth is None:
          return {
              "status": "error",
              "error": "QuantConnect authentication not configured. Use configure_auth() first.",
          }
  
      try:
          # Prepare request data
          request_data = {"projectId": project_id}
  
          # Make API request
          response = await auth.make_authenticated_request(
              endpoint="backtests/list", method="POST", json=request_data
          )
  
          # Parse response
          if response.status_code == 200:
              data = response.json()
  
              if data.get("success", False):
                  backtests = data.get("backtests", [])
                  
                  return {
                      "status": "success",
                      "project_id": project_id,
                      "backtests": backtests,
                      "total_backtests": len(backtests),
                      "message": f"Successfully retrieved {len(backtests)} backtests from project {project_id}",
                  }
              else:
                  # API returned success=false
                  errors = data.get("errors", ["Unknown error"])
                  return {
                      "status": "error",
                      "error": "Failed to list backtests",
                      "details": errors,
                      "project_id": project_id,
                  }
  
          elif response.status_code == 401:
              return {
                  "status": "error",
                  "error": "Authentication failed. Check your credentials and ensure they haven't expired.",
              }
  
          else:
              return {
                  "status": "error",
                  "error": f"API request failed with status {response.status_code}",
                  "response_text": (
                      response.text[:500]
                      if hasattr(response, "text")
                      else "No response text"
                  ),
              }
  
      except Exception as e:
          return {
              "status": "error",
              "error": f"Failed to list backtests: {str(e)}",
              "project_id": project_id,
          }

• quantconnect_mcp/src/server.py:77-77 (registration)

  Registers the backtest tools module, including 'list_backtests', by calling the register_backtest_tools function with the MCP instance.

  register_backtest_tools(mcp)