[GH-ISSUE #16138] issue: tools names are doubled when calling #33322

New Issue

GiteaMirror · 2026-04-25T07:13:49-05:00

GiteaMirror commented

2026-04-25 07:13:49 -05:00

Originally created by @latel on GitHub (Jul 30, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/16138

Check Existing Issues

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

Installation Method

Docker

Open WebUI Version

0.6.18

Ollama Version (if applicable)

No response

Operating System

unraid

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

tools calling normally

Actual Behavior

toos names are doubled, and the chat will stopped

Steps to Reproduce

I have tested several llm and the problems are same

Logs & Screenshots

Additional Information

No response

Originally created by @latel on GitHub (Jul 30, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/16138 ### Check Existing Issues - [x] I have searched the existing issues and discussions. - [x] I am using the latest version of Open WebUI. ### Installation Method Docker ### Open WebUI Version 0.6.18 ### Ollama Version (if applicable) _No response_ ### Operating System unraid ### 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 tools calling normally ### Actual Behavior toos names are doubled, and the chat will stopped ### Steps to Reproduce I have tested several llm and the problems are same ### Logs & Screenshots <img width="685" height="122" alt="Image" src="https://github.com/user-attachments/assets/f703d20f-969c-4ec4-8396-ec67be0a326d" /> ### Additional Information _No response_

GiteaMirror added the bug label 2026-04-25 07:13:49 -05:00

GiteaMirror closed this issue

2026-04-25 07:13:50 -05:00

GiteaMirror commented

2026-04-25 07:13:50 -05:00

@tjbck commented on GitHub (Jul 30, 2025):

Intended behaviour for external tool servers, with that being said PR welcome!

@tjbck commented on GitHub (Jul 30, 2025): Intended behaviour for external tool servers, with that being said PR welcome!

GiteaMirror commented

2026-04-25 07:13:51 -05:00

@lee-b commented on GitHub (Apr 22, 2026):

I've seen this cause problems with models; they can see the name repetition as a mistake, and correct it to a single instance, thereby becoming unable to call the tool.

Essentially what we have here is open-webui attempting to enforce uniqueness of tool names by doubling them up, when it should simply respect the tool names that are provided, but flag duplicates and refuse to save such a config or to add conflicting tools, imho.

@lee-b commented on GitHub (Apr 22, 2026): I've seen this cause problems with models; they can see the name repetition as a mistake, and correct it to a single instance, thereby becoming unable to call the tool. Essentially what we have here is open-webui attempting to enforce uniqueness of tool names by doubling them up, when it should simply respect the tool names that are provided, but flag duplicates and refuse to save such a config or to add conflicting tools, imho.

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Reference: github-starred/open-webui#33322