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[GH-ISSUE #21818] issue: custom tools in standard model not working #58245

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opened 2026-05-05 22:38:54 -05:00 by GiteaMirror · 13 comments
GiteaMirror commented 2026-05-05 22:38:54 -05:00
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Originally created by @MarceloMassarente on GitHub (Feb 24, 2026).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/21818

Check Existing Issues

  • I have searched for any existing and/or related issues.
  • I have searched for any existing and/or related discussions.
  • I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!).
  • I am using the latest version of Open WebUI.

Installation Method

Docker

Open WebUI Version

0.8.5

Ollama Version (if applicable)

No response

Operating System

ubuntu

Browser (if applicable)

No response

Confirmation

  • I have read and followed all instructions in README.md.
  • I am using the latest version of both Open WebUI and Ollama.
  • I have included the browser console logs.
  • I have included the Docker container logs.
  • I have provided every relevant configuration, setting, and environment variable used in my setup.
  • I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
  • I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
  • Start with the initial platform/version/OS and dependencies used,
  • Specify exact install/launch/configure commands,
  • List URLs visited, user input (incl. example values/emails/passwords if needed),
  • Describe all options and toggles enabled or changed,
  • Include any files or environmental changes,
  • Identify the expected and actual result at each stage,
  • Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

With GPT-5-Mini selected and a custom tool that does search and scrape enabled in the workspae, in native mode it should work

Actual Behavior

the model returns that has not tools available.but if in Native mode it works

Steps to Reproduce

selecte gpt-5, register any custom tooll, enable and try to use in standard mode. I am using chat completions end point

Logs & Screenshots

Image

26-02-24 05:42:20.953 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60809 - "GET /audio/notification.mp3 HTTP/1.1" 304
2026-02-24 05:42:21.120 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60809 - "GET /static/apple-touch-icon.png HTTP/1.1" 304
2026-02-24 05:42:21.401 | INFO | function_anthropic_api_new:get_anthropic_models:523 - Fetching models from Anthropic API...
2026-02-24 05:42:21.971 | INFO | function_anthropic_api_new:get_anthropic_models:549 - Successfully fetched 29 models from API (with fallback merge)
2026-02-24 05:42:22.344 | INFO | httpx._client:_send_single_request:1025 - HTTP Request: GET https://generativelanguage.googleapis.com/v1alpha/models "HTTP/1.1 200 OK"
2026-02-24 05:42:22.350 | INFO | open_webui.routers.openai:get_all_models:487 - get_all_models()
2026-02-24 05:42:22.357 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60810 - "GET /api/v1/chats/folder/736ef148-6f51-48fe-9128-1231cc3e4ce2/list?page=1 HTTP/1.1" 200
2026-02-24 05:42:22.403 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60811 - "GET /api/v1/tools/ HTTP/1.1" 200
2026-02-24 05:42:23.333 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60809 - "GET /api/models HTTP/1.1" 200
2026-02-24 05:42:40.029 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60814 - "GET /_app/version.json HTTP/1.1" 200
2026-02-24 05:43:00.348 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60825 - "POST /api/v1/chats/new HTTP/1.1" 200
2026-02-24 05:43:00.349 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "GET /api/v1/tools/ HTTP/1.1" 200
2026-02-24 05:43:00.417 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60825 - "GET /api/v1/chats/folder/736ef148-6f51-48fe-9128-1231cc3e4ce2/list?page=1 HTTP/1.1" 200
2026-02-24 05:43:00.446 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60827 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200
2026-02-24 05:43:00.505 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "POST /api/v1/chats/e2410d2e-e5a7-4c38-bc03-c37e7c2cf9a0 HTTP/1.1" 200
2026-02-24 05:43:00.533 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200
2026-02-24 05:43:00.588 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "POST /api/chat/completions HTTP/1.1" 200
2026-02-24 05:43:00.614 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200
2026-02-24 05:43:20.538 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56327 - "POST /api/chat/completed HTTP/1.1" 200
2026-02-24 05:43:20.562 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56327 - "POST /api/v1/chats/e2410d2e-e5a7-4c38-bc03-c37e7c2cf9a0 HTTP/1.1" 200
2026-02-24 05:43:20.583 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56327 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200
2026-02-24 05:43:28.117 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56328 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200
2026-02-24 05:43:28.137 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56328 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200
2026-02-24 05:43:40.957 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56329 - "GET /_app/version.json HTTP/1.1" 200

Additional Information

No response

Originally created by @MarceloMassarente on GitHub (Feb 24, 2026). Original GitHub issue: https://github.com/open-webui/open-webui/issues/21818 ### Check Existing Issues - [x] I have searched for any existing and/or related issues. - [x] I have searched for any existing and/or related discussions. - [x] I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!). - [x] I am using the latest version of Open WebUI. ### Installation Method Docker ### Open WebUI Version 0.8.5 ### Ollama Version (if applicable) _No response_ ### Operating System ubuntu ### Browser (if applicable) _No response_ ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** Open WebUI and Ollama. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.** - [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc). - [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps: - Start with the initial platform/version/OS and dependencies used, - Specify exact install/launch/configure commands, - List URLs visited, user input (incl. example values/emails/passwords if needed), - Describe all options and toggles enabled or changed, - Include any files or environmental changes, - Identify the expected and actual result at each stage, - Ensure any reasonably skilled user can follow and hit the same issue. ### Expected Behavior With GPT-5-Mini selected and a custom tool that does search and scrape enabled in the workspae, in native mode it should work ### Actual Behavior the model returns that has not tools available.but if in Native mode it works ### Steps to Reproduce selecte gpt-5, register any custom tooll, enable and try to use in standard mode. I am using chat completions end point ### Logs & Screenshots <img width="1348" height="720" alt="Image" src="https://github.com/user-attachments/assets/91ad6d9d-845d-4cb4-aa7c-135feb5d344e" /> 26-02-24 05:42:20.953 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60809 - "GET /audio/notification.mp3 HTTP/1.1" 304 2026-02-24 05:42:21.120 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60809 - "GET /static/apple-touch-icon.png HTTP/1.1" 304 2026-02-24 05:42:21.401 | INFO | function_anthropic_api_new:get_anthropic_models:523 - Fetching models from Anthropic API... 2026-02-24 05:42:21.971 | INFO | function_anthropic_api_new:get_anthropic_models:549 - Successfully fetched 29 models from API (with fallback merge) 2026-02-24 05:42:22.344 | INFO | httpx._client:_send_single_request:1025 - HTTP Request: GET https://generativelanguage.googleapis.com/v1alpha/models "HTTP/1.1 200 OK" 2026-02-24 05:42:22.350 | INFO | open_webui.routers.openai:get_all_models:487 - get_all_models() 2026-02-24 05:42:22.357 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60810 - "GET /api/v1/chats/folder/736ef148-6f51-48fe-9128-1231cc3e4ce2/list?page=1 HTTP/1.1" 200 2026-02-24 05:42:22.403 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60811 - "GET /api/v1/tools/ HTTP/1.1" 200 2026-02-24 05:42:23.333 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60809 - "GET /api/models HTTP/1.1" 200 2026-02-24 05:42:40.029 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60814 - "GET /_app/version.json HTTP/1.1" 200 2026-02-24 05:43:00.348 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60825 - "POST /api/v1/chats/new HTTP/1.1" 200 2026-02-24 05:43:00.349 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "GET /api/v1/tools/ HTTP/1.1" 200 2026-02-24 05:43:00.417 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60825 - "GET /api/v1/chats/folder/736ef148-6f51-48fe-9128-1231cc3e4ce2/list?page=1 HTTP/1.1" 200 2026-02-24 05:43:00.446 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60827 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200 2026-02-24 05:43:00.505 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "POST /api/v1/chats/e2410d2e-e5a7-4c38-bc03-c37e7c2cf9a0 HTTP/1.1" 200 2026-02-24 05:43:00.533 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200 2026-02-24 05:43:00.588 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "POST /api/chat/completions HTTP/1.1" 200 2026-02-24 05:43:00.614 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:60826 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200 2026-02-24 05:43:20.538 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56327 - "POST /api/chat/completed HTTP/1.1" 200 2026-02-24 05:43:20.562 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56327 - "POST /api/v1/chats/e2410d2e-e5a7-4c38-bc03-c37e7c2cf9a0 HTTP/1.1" 200 2026-02-24 05:43:20.583 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56327 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200 2026-02-24 05:43:28.117 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56328 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200 2026-02-24 05:43:28.137 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56328 - "GET /api/v1/chats/?page=1 HTTP/1.1" 200 2026-02-24 05:43:40.957 | INFO | uvicorn.protocols.http.httptools_impl:send:483 - 192.168.1.230:56329 - "GET /_app/version.json HTTP/1.1" 200 ### Additional Information _No response_
GiteaMirror added the bug label 2026-05-05 22:38:54 -05:00
GiteaMirror commented 2026-05-05 22:38:58 -05:00
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@timtips commented on GitHub (Feb 24, 2026):

I see the same behavior since 0.8.4.
0.8.5 didn't fix it.
In my case the model doesn't see a tool that I use to create anki flashcards. Switching to native function calling works.

<!-- gh-comment-id:3950177614 --> @timtips commented on GitHub (Feb 24, 2026): I see the same behavior since 0.8.4. 0.8.5 didn't fix it. In my case the model doesn't see a tool that I use to create anki flashcards. Switching to native function calling works.
GiteaMirror commented 2026-05-05 22:38:59 -05:00
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@arahnale commented on GitHub (Feb 24, 2026):

I have the same problem on version 0.8.5. external tools with mcp are not working.

<!-- gh-comment-id:3950744056 --> @arahnale commented on GitHub (Feb 24, 2026): I have the same problem on version 0.8.5. external tools with mcp are not working.
GiteaMirror commented 2026-05-05 22:39:01 -05:00
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@mustard123 commented on GitHub (Feb 24, 2026):

Same, last working version for me is 0.8.3
Like @timtips since 0.8.4 my external tool are not called anymore

<!-- gh-comment-id:3950755436 --> @mustard123 commented on GitHub (Feb 24, 2026): Same, last working version for me is 0.8.3 Like @timtips since 0.8.4 my external tool are not called anymore
GiteaMirror commented 2026-05-05 22:39:02 -05:00
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@fauzcategui commented on GitHub (Feb 24, 2026):

The same problem here, the internal and external tools worked fine in version 0.8.3. I upgraded to 0.8.5 and now there's no way for any model to call these tools.

<!-- gh-comment-id:3952295171 --> @fauzcategui commented on GitHub (Feb 24, 2026): The same problem here, the internal and external tools worked fine in version 0.8.3. I upgraded to 0.8.5 and now there's no way for any model to call these tools.
GiteaMirror commented 2026-05-05 22:39:04 -05:00
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@lazyfai commented on GitHub (Feb 24, 2026):

Same problem for me.
None of the models can call any tool now.
Not call failed, but they even do not know there is any tool available.

<!-- gh-comment-id:3952702056 --> @lazyfai commented on GitHub (Feb 24, 2026): Same problem for me. None of the models can call any tool now. Not call failed, but they even do not know there is any tool available.
GiteaMirror commented 2026-05-05 22:39:05 -05:00
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@marktemi commented on GitHub (Feb 24, 2026):

yes same issue

<!-- gh-comment-id:3953106765 --> @marktemi commented on GitHub (Feb 24, 2026): yes same issue
GiteaMirror commented 2026-05-05 22:39:07 -05:00
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@Classic298 commented on GitHub (Feb 24, 2026):

can you reproduce it even on latest dev? can you guys please test latest dev? thanks

<!-- gh-comment-id:3953204896 --> @Classic298 commented on GitHub (Feb 24, 2026): can you reproduce it even on latest dev? can you guys please test latest dev? thanks
GiteaMirror commented 2026-05-05 22:39:10 -05:00
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@jmcomby commented on GitHub (Feb 24, 2026):

Same problem with version 0.8.5-slim.
dev-slim (git-b36e55c) and 0.8.3-slim is working.

<!-- gh-comment-id:3954600407 --> @jmcomby commented on GitHub (Feb 24, 2026): Same problem with version 0.8.5-slim. dev-slim (git-b36e55c) and 0.8.3-slim is working.
GiteaMirror commented 2026-05-05 22:39:12 -05:00
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@Classic298 commented on GitHub (Feb 24, 2026):

Can you guys please confirm it's still present for you in dev or not? Thanks

<!-- gh-comment-id:3954644280 --> @Classic298 commented on GitHub (Feb 24, 2026): Can you guys please confirm it's still present for you in dev or not? Thanks
GiteaMirror commented 2026-05-05 22:39:14 -05:00
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@fauzcategui commented on GitHub (Feb 24, 2026):

in latest dev it's working now

image: ghcr.io/open-webui/open-webui:dev

<!-- gh-comment-id:3954852118 --> @fauzcategui commented on GitHub (Feb 24, 2026): in latest dev it's working now image: ghcr.io/open-webui/open-webui:dev
GiteaMirror commented 2026-05-05 22:39:16 -05:00
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@Classic298 commented on GitHub (Feb 24, 2026):

thanks for confirming. And with that: fixed in dev.

<!-- gh-comment-id:3954861839 --> @Classic298 commented on GitHub (Feb 24, 2026): thanks for confirming. And with that: fixed in dev.
GiteaMirror commented 2026-05-05 22:39:18 -05:00
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@lazyfai commented on GitHub (Feb 25, 2026):

Dev docker image seems resolved the issue for new chats (only).

<!-- gh-comment-id:3956793242 --> @lazyfai commented on GitHub (Feb 25, 2026): Dev docker image seems resolved the issue for new chats (only).
GiteaMirror commented 2026-05-05 22:39:20 -05:00
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@AmanGupta0112 commented on GitHub (Feb 27, 2026):

Hi how did you fix the issue because i'm still not able to use the tools
I'm using this ghcr.io/open-webui/open-webui:dev but still it wont use any tool

Image
<!-- gh-comment-id:3974525952 --> @AmanGupta0112 commented on GitHub (Feb 27, 2026): Hi how did you fix the issue because i'm still not able to use the tools I'm using this ghcr.io/open-webui/open-webui:dev but still it wont use any tool <img width="1728" height="1117" alt="Image" src="https://github.com/user-attachments/assets/cd07fe20-9bc6-432d-8af0-01c29a5e52b5" />
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