Power Platform Community Forum Thread Details

Sorry, something went wrong. Error code: SystemError.

i have been trying to connect custom build MCP-server which is hosted in our KAAS platform.
it is very simple tool:

Mcp-server:

from mcp.server.fastmcp import FastMCP
from dotenv import load_dotenv
#from fastapi.middleware.cors import CORSMiddleware
load_dotenv("../.env")
# Create an MCP server
# === Your MCP Server ===
mcp = FastMCP(
    name="Calculator",
    host="0.0.0.0",
    port=8050,
)
# Add a simple calculator tool
@mcp.tool()
async def add(a: int, b: int) -> int:
    # auth_header=request.headers.get('authorization')
    # if not auth_header:
    #     raise HTTPException(status_code=401, detail="Missing Authorization header")
    # token = auth_header.replace("Bearer ", "")
    # print("Received token:", token)
    """Add two numbers together"""
    return a + b
# Run the server
if __name__ == "__main__":
    print("Running server with Stramble-http transport")
    mcp.run(transport="streamable-http")





i am trying to connect this server from copilot studio and i am able to create/connect to connector from agent using swagger.yml



swagger: '2.0'

info:

  title: Mcp-add-5

  description: >-

    MCP Test Specification, YAML for streamable MCP support Copilot Studio which

    adds two numbers

  version: 1.0.0

host: <host name>

basePath: /

schemes:

  - https

paths:

  /mcp/:

    post:

      summary: Mcp-add-5

      x-ms-agentic-protocol: mcp-streamable-1.0

      operationId: InvokeMCP

      responses:

        '200':

          description: Success

securityDefinitions: {}



but after trying many times tools are not loading in copilot studio:



Not sure where am i making mistake ..same mcp-server works fine when i access from github-copilot and with fastapi-client