MCPO's are up and running; but unable to connect them via Open-WebUI Tools

[JOduMonT]

hi;

so I clone the repository

git clone git clone https://github.com/open-webui/openapi-servers
then litterally connected via extend the docker-compose with my other dockers.

when I try any access to the docs it works nicely and I can even successfully run example ;)

but when I try to connect the Tools with Open-WebUI it does not.
now has you hopefully saw in my first screenshot; time-server run on 8083 (exactly like in the docker-compose.yaml provided.
829c58ee8c59 docker-time-server "/bin/sh -c 'uvicorn…" 8 minutes ago Up 8 minutes 0.0.0.0:8083->8000/tcp, [::]:8083->8000/tcp docker-time-server-1

in Open-WebUI -> Tools I tried

• URL: http://localhost:8000/time
• URL: http://localhost:8083/time
  which 8083 only works; and it's logic :)

The big difference is the path

• with /openapi.json it say connection failed
• without it say wrong path.

What I`m missing ?

[jbroughton0429]

Have you found a solution yet?

I've got the same issue. I'm using the latest version of open-webui, testing with the time option (as you are), both with python and uvicorn. Same issue, I can query via 'docs', I can add the tool site and it says 'success'. I see that is 200's to /openapi.json when I add it, but the tools don't show up anywhere. This happens both for adding tools as an individual user, and global.

[jbroughton0429]

Update on this if it helps you. The fix for me:

1. In your tools for the server you need to specify the tool itself: (ex: http://ip:/time-server)
2. If you have multiple tools, it needs multiple entries.
3. After saved and successful, refresh the page and a little wrench icon (available tools) will show up next to your + (more) in your chat context.
   Note: this is for loading tools via the individual user context, and not global. Global 'should' show this in 'more'. However I haven't tested this yet.
4. You should now be able to use the tools

One of the things I found was that only specific models worked with the tools such as phi4, qwen, etc. If you tie into chatGPT be sure to set your ReACT or whatever it's called these days, for it to use the tool effectively. This is found here: ReACT-Style