[PR #23482] [CLOSED] feat: render Responses API built-in tool output items #27215

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GiteaMirror · 2026-04-20T06:56:12-05:00

GiteaMirror commented

2026-04-20 06:56:12 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/23482
Author: @Classic298
Created: 4/7/2026
Status: ❌ Closed

Base: dev ← Head: feat/responses-api-builtin-tools

📝 Commits (1)

7cf0ed8 feat: render Responses API built-in tool output items

📊 Changes

1 file changed (+96 additions, -0 deletions)

View changed files

📝 backend/open_webui/utils/middleware.py (+96 -0)

📄 Description

Add rendering support for OpenAI Responses API built-in server-side tool output items: web_search_call, file_search_call, and computer_call. These are emitted when the model uses OpenAI's native tools (web_search, file_search, computer_use) through the Responses API.

The streaming handler already accumulated these items correctly, but serialize_output silently dropped them during rendering. Now they render as collapsible tool call blocks matching the existing UI pattern.

Also extract url_citation annotations from Responses API output items (produced by the built-in web search tool) and emit them as source events so the frontend displays proper citation links.

Contributor License Agreement

By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.

Note

Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/open-webui/open-webui/pull/23482 **Author:** [@Classic298](https://github.com/Classic298) **Created:** 4/7/2026 **Status:** ❌ Closed **Base:** `dev` ← **Head:** `feat/responses-api-builtin-tools` --- ### 📝 Commits (1) - [`7cf0ed8`](https://github.com/open-webui/open-webui/commit/7cf0ed80215edf5ccd6815947da895f9a45e4c1f) feat: render Responses API built-in tool output items ### 📊 Changes **1 file changed** (+96 additions, -0 deletions) <details> <summary>View changed files</summary> 📝 `backend/open_webui/utils/middleware.py` (+96 -0) </details> ### 📄 Description Add rendering support for OpenAI Responses API built-in server-side tool output items: web_search_call, file_search_call, and computer_call. These are emitted when the model uses OpenAI's native tools (web_search, file_search, computer_use) through the Responses API. The streaming handler already accumulated these items correctly, but serialize_output silently dropped them during rendering. Now they render as collapsible tool call blocks matching the existing UI pattern. Also extract url_citation annotations from Responses API output items (produced by the built-in web search tool) and emit them as source events so the frontend displays proper citation links. ### Contributor License Agreement  - [x] By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms. > [!NOTE] > Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-04-20 06:56:12 -05:00

GiteaMirror closed this issue

2026-04-20 06:56:13 -05:00

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Reference: github-starred/open-webui#27215