issue: Trailing Slash #124

New Issue

2026-02-15T21:15:00-05:00

yindo commented

2026-02-15 21:15:00 -05:00

Originally created by @fred-gb on GitHub (Jan 21, 2026).

Check Existing Issues

I have searched the existing issues and discussions.
I am using the latest version of mcpo.

mcpo Version

main (git-91e8f94)

Open WebUI Version (if applicable)

v0.7.2

Operating System

Ubuntu 24.04 and Docker

Browser (if applicable)

Firefox

Confirmation

I have read and followed all instructions in README.md.
I am using the latest version of both MCPO and Open WebUI.
I have included the browser console logs.
I have included the Docker container logs.
I have listed steps to reproduce the bug in detail.

Expected Behavior

Connect OpenWebUI to MCPO by streamable HTTP

Actual Behavior

When I try to connect, the request add a trailing slash and 404 page not found result.

Steps to Reproduce

docker compose (dev):

  mcpo:
    image: ghcr.io/open-webui/mcpo:main
    container_name: assistant.quanticware.com-mcpo
    command: ["--api-key", "Hello", "--config", "/app/config/config.json"]
    volumes:
      - type: bind
        source: "/data/mcpo/app/config"
        target: "/app/config"
    restart: unless-stopped

MCPO configuration in OpenWebUi:

Logs & Screenshots

MCPO logs:

INFO:     192.168.144.3:55706 - "POST /time HTTP/1.1" 307 Temporary Redirect
INFO:     192.168.144.3:55706 - "POST /time/ HTTP/1.1" 404 Not Found

Additional Information

Related to: https://github.com/open-webui/mcpo/discussions/274 , https://github.com/open-webui/mcpo/issues/209

Originally created by @fred-gb on GitHub (Jan 21, 2026). ### Check Existing Issues - [x] I have searched the existing issues and discussions. - [x] I am using the latest version of mcpo. ### mcpo Version main (git-91e8f94) ### Open WebUI Version (if applicable) v0.7.2 ### Operating System Ubuntu 24.04 and Docker ### Browser (if applicable) Firefox ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** MCPO and Open WebUI. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have listed steps to reproduce the bug in detail. ### Expected Behavior Connect OpenWebUI to MCPO by streamable HTTP ### Actual Behavior When I try to connect, the request add a trailing slash and 404 page not found result. ### Steps to Reproduce docker compose (dev): ``` mcpo: image: ghcr.io/open-webui/mcpo:main container_name: assistant.quanticware.com-mcpo command: ["--api-key", "Hello", "--config", "/app/config/config.json"] volumes: - type: bind source: "/data/mcpo/app/config" target: "/app/config" restart: unless-stopped ``` MCPO configuration in OpenWebUi: <img width="525" height="722" alt="Image" src="https://github.com/user-attachments/assets/876406de-682d-46fb-9b27-0df840259356" /> ### Logs & Screenshots MCPO logs: ``` INFO: 192.168.144.3:55706 - "POST /time HTTP/1.1" 307 Temporary Redirect INFO: 192.168.144.3:55706 - "POST /time/ HTTP/1.1" 404 Not Found ``` ### Additional Information Related to: https://github.com/open-webui/mcpo/discussions/274 , https://github.com/open-webui/mcpo/issues/209

yindo added the bug label 2026-02-15 21:15:00 -05:00

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Reference: open-webui/mcpo#124