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[GH-ISSUE #61] issue: Tools not usable likely due to adress issue #29

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opened 2026-10-18 21:10:35 +00:00 by bsakaguchi · 3 comments
bsakaguchi commented 2026-10-18 21:10:35 +00:00
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Originally created by @jmtatsch on GitHub (Apr 10, 2025).
Original GitHub issue: https://github.com/open-webui/mcpo/issues/61

Check Existing Issues

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

mcpo Version

0.0.9

Open WebUI Version (if applicable)

0.62

Operating System

Ubuntu 22.04

Browser (if applicable)

Safari

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

Openwebui should be able to use tools from mcpo that are on the same network but not on the same host.

Actual Behavior

Unfortunately, open webui does not seem to see tools that are not under 0.0.0.0:8000 and does not attempt to use the tools at all.

Steps to Reproduce

  1. up the open webui and mcpo

  2. in webui "Search confluence for xxx using the tools"

Logs & Screenshots

I am running mcpo and open webui in docker containers, both are on the same network and apparently able to communicate as open webui shows:

Image 
✔ Container mcpo-mcpo-1  Created                                                                                                                                                                      0.6s 
Attaching to mcpo-1
mcpo-1  | INFO:     Started server process [1]
mcpo-1  | INFO:     Waiting for application startup.
mcpo-1  | Knowledge Graph MCP Server running on stdio
mcpo-1  | Downloading pydantic-core (1.9MiB)
mcpo-1  |  Downloaded pydantic-core
mcpo-1  | Installed 22 packages in 36ms
mcpo-1  | Downloading lxml (4.8MiB)
mcpo-1  |  Downloaded lxml
mcpo-1  | Installed 49 packages in 72ms
mcpo-1  | GitHub MCP Server running on stdio
mcpo-1  | INFO:     Application startup complete.
mcpo-1  | INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
mcpo-1  | Starting MCP OpenAPI Proxy with config file: /app/config.json
mcpo-1  | INFO:     192.168.80.2:40728 - "GET /openapi.json HTTP/1.1" 200 OK

When i look at the openapi

Image

I see that the sub api's are expected at 0.0.0.0 which likely wont work within dockers own networks.

Additional Information

No response

Originally created by @jmtatsch on GitHub (Apr 10, 2025). Original GitHub issue: https://github.com/open-webui/mcpo/issues/61 ### Check Existing Issues - [x] I have searched the existing issues and discussions. - [x] I am using the latest version of mcpo. ### mcpo Version 0.0.9 ### Open WebUI Version (if applicable) 0.62 ### Operating System Ubuntu 22.04 ### Browser (if applicable) Safari ### 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 Openwebui should be able to use tools from mcpo that are on the same network but not on the same host. ### Actual Behavior Unfortunately, open webui does not seem to see tools that are not under 0.0.0.0:8000 and does not attempt to use the tools at all. ### Steps to Reproduce 1. up the open webui and mcpo 2. in webui "Search confluence for xxx using the tools" ### Logs & Screenshots I am running mcpo and open webui in docker containers, both are on the same network and apparently able to communicate as open webui shows: <img width="670" alt="Image" src="https://github.com/user-attachments/assets/3e3cae96-9793-408f-98dc-15b8f00e2987" /> ``` ✔ Container mcpo-mcpo-1 Created 0.6s Attaching to mcpo-1 mcpo-1 | INFO: Started server process [1] mcpo-1 | INFO: Waiting for application startup. mcpo-1 | Knowledge Graph MCP Server running on stdio mcpo-1 | Downloading pydantic-core (1.9MiB) mcpo-1 | Downloaded pydantic-core mcpo-1 | Installed 22 packages in 36ms mcpo-1 | Downloading lxml (4.8MiB) mcpo-1 | Downloaded lxml mcpo-1 | Installed 49 packages in 72ms mcpo-1 | GitHub MCP Server running on stdio mcpo-1 | INFO: Application startup complete. mcpo-1 | INFO: Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit) mcpo-1 | Starting MCP OpenAPI Proxy with config file: /app/config.json mcpo-1 | INFO: 192.168.80.2:40728 - "GET /openapi.json HTTP/1.1" 200 OK ``` When i look at the openapi <img width="597" alt="Image" src="https://github.com/user-attachments/assets/1b2ca6cb-8f4a-4dca-bce0-531283f37948" /> I see that the sub api's are expected at 0.0.0.0 which likely wont work within dockers own networks. ### Additional Information _No response_
bsakaguchi 2026-10-18 21:10:35 +00:00
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bsakaguchi commented 2026-10-18 21:10:36 +00:00
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@CyrusCY commented on GitHub (Apr 10, 2025):

have u tried adding each tool separately?

Image
<!-- gh-comment-id:2791964322 --> @CyrusCY commented on GitHub (Apr 10, 2025): have u tried adding each tool separately? <img width="482" alt="Image" src="https://github.com/user-attachments/assets/e31328d1-4ffb-4ee6-9e8c-a38b56dadd8f" />
bsakaguchi commented 2026-10-18 21:10:36 +00:00
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@jmtatsch commented on GitHub (Apr 10, 2025):

Yes, that does work.
Are we not supposed to add all at once?

<!-- gh-comment-id:2792196749 --> @jmtatsch commented on GitHub (Apr 10, 2025): Yes, that does work. Are we not supposed to add all at once?
bsakaguchi commented 2026-10-18 21:10:36 +00:00
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@spoy-ai commented on GitHub (Apr 10, 2025):

have u tried adding each tool separately?

Image

thank bro. i success

<!-- gh-comment-id:2793287161 --> @spoy-ai commented on GitHub (Apr 10, 2025): # > have u tried adding each tool separately? > > <img alt="Image" width="482" src="https://private-user-images.githubusercontent.com/30614030/432193713-e31328d1-4ffb-4ee6-9e8c-a38b56dadd8f.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.zW0ZLwC2zaPMP2tObKqoz5VFthwA3IG_4lfqVi_qc7E"> thank bro. i success
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open-webui/mcpo#29
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