First simple configuration

[fred-gb]

Bonjour 👋🏻

OpenWebUI v0.6.41

I'm sorry for this very stupid question...I'm just starting out.
I can't configure a MCPO simpe, time.

A part of my docker compose:

  mcpo:
    image: ghcr.io/open-webui/mcpo:main
    command: --api-key "secret_key" --config /app/config/config.json
    env_file:
      - .env
    volumes:
      - type: bind
        source: "/data/mcpo/data/app/config"
        target: "/app/config"
    restart: unless-stopped
    networks:
      - openwebui

config.json:

{
  "mcpServers": {
    "time": {
      "command": "uvx",
      "args": ["mcp-server-time", "--local-timezone=Europe/Paris"]
   }
  }
}

When I start the container, the logs:

--- Server Startup Summary ---
2025-12-15 17:02:17,727 - INFO - Successfully connected to:
2025-12-15 17:02:17,727 - INFO -   - time
2025-12-15 17:02:17,728 - INFO - --------------------------
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:8000/ (Press CTRL+C to quit)
Starting MCP OpenAPI Proxy with config file: /app/config/config.json

and then in OpenWebUi, I cannot configure. Settings > External Tools

Each time I try, I have a error Connection Failed

In MCPO logs:

INFO:     192.168.144.2:41220 - "POST /time HTTP/1.1" 307 Temporary Redirect
INFO:     192.168.144.2:41220 - "POST /time/ HTTP/1.1" 404 Not Found

In OpenWebUI logs:

2025-12-15 17:19:04.104 | INFO     | httpx._client:_send_single_request:1740 - HTTP Request: POST http://mcpo:8000/time "HTTP/1.1 307 Temporary Redirect"
2025-12-15 17:19:04.109 | INFO     | httpx._client:_send_single_request:1740 - HTTP Request: POST http://mcpo:8000/time/ "HTTP/1.1 404 Not Found"
2025-12-15 17:19:04.112 | INFO     | uvicorn.protocols.http.httptools_impl:send:476 - xxxx:0 - "POST /api/v1/configs/tool_servers/verify HTTP/1.1" 400

I tried many configurations, http://mcpo:8000/time without /time . time in functions. I tried with different tokens etc.

Why It's mandatory to put username?

But I don't find...

Where is my mistake? 😭

Thanks

[bklebel]

I have the same issue in v0.7.2. I can reach the endpoint via browser and the /docs page, execute requests and everything, but openwebui does not want it