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[PR #19379] [CLOSED] feat: User placeholders added for dynamic mcp header configuration #48240

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opened 2026-04-29 23:50:17 -05:00 by GiteaMirror · 0 comments
GiteaMirror commented 2026-04-29 23:50:17 -05:00
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📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/19379
Author: @ctolon
Created: 11/22/2025
Status: ❌ Closed

Base: dev ← Head: user-placeholders

📝 Commits (8)

📊 Changes

7 files changed (+364 additions, -4 deletions)

View changed files

📝 backend/open_webui/routers/configs.py (+1 -0)
📝 backend/open_webui/utils/middleware.py (+29 -3)
📝 backend/open_webui/utils/tools.py (+33 -0)
📝 src/lib/components/AddToolServerModal.svelte (+66 -0)
📝 src/lib/components/chat/MessageInput/IntegrationsMenu.svelte (+55 -1)
➕ src/lib/components/chat/MessageInput/PlaceholderConfigModal.svelte (+116 -0)
➕ src/lib/components/chat/Settings/Tools/PlaceholderValues.svelte (+64 -0)

📄 Description

Pull Request Checklist

Note to first-time contributors: Please open a discussion post in Discussions to discuss your idea/fix with the community before creating a pull request, and describe your changes before submitting a pull request.

This is to ensure large feature PRs are discussed with the community first, before starting work on it. If the community does not want this feature or it is not relevant for Open WebUI as a project, it can be identified in the discussion before working on the feature and submitting the PR.

Before submitting, make sure you've checked the following:

  • Target branch: Verify that the pull request targets the dev branch. Not targeting the dev branch will lead to immediate closure of the PR.
  • Description: Provide a concise description of the changes made in this pull request down below.
  • Changelog: Ensure a changelog entry following the format of Keep a Changelog is added at the bottom of the PR description.
  • Documentation: If necessary, update relevant documentation Open WebUI Docs like environment variables, the tutorials, or other documentation sources.
  • Dependencies: Are there any new dependencies? Have you updated the dependency versions in the documentation?
  • Testing: Perform manual tests to verify the implemented fix/feature works as intended AND does not break any other functionality. Take this as an opportunity to make screenshots of the feature/fix and include it in the PR description.
  • Agentic AI Code: Confirm this Pull Request is not written by any AI Agent or has at least gone through additional human review AND manual testing. If any AI Agent is the co-author of this PR, it may lead to immediate closure of the PR.
  • Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
  • Title Prefix: To clearly categorize this pull request, prefix the pull request title using one of the following:
    • BREAKING CHANGE: Significant changes that may affect compatibility
    • build: Changes that affect the build system or external dependencies
    • ci: Changes to our continuous integration processes or workflows
    • chore: Refactor, cleanup, or other non-functional code changes
    • docs: Documentation update or addition
    • feat: Introduces a new feature or enhancement to the codebase
    • fix: Bug fix or error correction
    • i18n: Internationalization or localization changes
    • perf: Performance improvement
    • refactor: Code restructuring for better maintainability, readability, or scalability
    • style: Changes that do not affect the meaning of the code (white space, formatting, missing semi-colons, etc.)
    • test: Adding missing tests or correcting existing tests
    • WIP: Work in progress, a temporary label for incomplete or ongoing work

Changelog Entry

  • Add Dynamic user-specific headers inputs for MCP tool server headers w/ ({{VARIABLE_NAME}} templating (Header keys defined by admin side). No dependencies were added/changed to integrate this feature.

Description

  • This PR adds a user-specific placeholder system for MCP (Model Context Protocol) tool server headers, enabling dynamic header configuration per user. Administrators can define placeholder names in tool server connections, and each user can provide their own values for these placeholders. This allows multi-tenant scenarios where different users can use the same tool server with their own credentials.

Added

  • Backend:
    • Added placeholders field to ToolServerConnection model in backend/open_webui/routers/configs.py
    • Added replace_placeholders_in_headers() utility function in backend/open_webui/utils/tools.py to replace {{PLACEHOLDER_NAME}} patterns
      with user-provided values
    • Integrated placeholder replacement in middleware for both chat payload processing and MCP server connections
  • Frontend:
    • Added placeholder input fields in AddToolServerModal.svelte allowing admins to define placeholder names when configuring tool servers
    • Added "Configure Placeholders" button in IntegrationsMenu.svelte for tools that require placeholder values
    • Created new PlaceholderConfigModal.svelte component for users to enter their placeholder values
    • Created new PlaceholderValues.svelte component for settings page placeholder management
    • Integrated placeholder storage in user settings via tool_server_placeholders field

Changed

  • Modified process_chat_payload() and process_chat_response() in backend/open_webui/utils/middleware.py to include user's
    tool_server_placeholders in extra params
  • Updated get_tools() function to apply placeholder replacement to MCP connection headers

Deprecated

  • None

Removed

  • None

Fixed

  • None

Security

  • User placeholder values are stored in user settings and are private to each user
  • Placeholder replacement happens server-side to prevent exposure of sensitive values
  • Each user can only access their own placeholder values

Breaking Changes

  • BREAKING CHANGE: None

Additional Information

  • None

Screenshots or Videos

Here are the screenshoots from my manual integration tests:

  • image
  • image
  • image

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/19379 **Author:** [@ctolon](https://github.com/ctolon) **Created:** 11/22/2025 **Status:** ❌ Closed **Base:** `dev` ← **Head:** `user-placeholders` --- ### 📝 Commits (8) - [`aa4e9dc`](https://github.com/open-webui/open-webui/commit/aa4e9dc74ea94a35a29d367fb328dbde5084d817) User placeholders added for dynamic mcp header configuration - [`fe6783c`](https://github.com/open-webui/open-webui/commit/fe6783c16699911c7be17392596d579333fb110c) Merge pull request #19030 from open-webui/dev - [`fc05e0a`](https://github.com/open-webui/open-webui/commit/fc05e0a6c5d39da60b603b4d520f800d6e36f748) Merge pull request #19405 from open-webui/dev - [`e3faec6`](https://github.com/open-webui/open-webui/commit/e3faec62c58e3a83d89aa3df539feacefa125e0c) Merge pull request #19416 from open-webui/dev - [`9899293`](https://github.com/open-webui/open-webui/commit/9899293f050ad50ae12024cbebee7e018acd851e) Merge pull request #19448 from open-webui/dev - [`140605e`](https://github.com/open-webui/open-webui/commit/140605e660b8186a7d5c79fb3be6ffb147a2f498) Merge pull request #19462 from open-webui/dev - [`6f1486f`](https://github.com/open-webui/open-webui/commit/6f1486ffd0cb288d0e21f41845361924e0d742b3) Merge pull request #19466 from open-webui/dev - [`02e5a5f`](https://github.com/open-webui/open-webui/commit/02e5a5fa0a74b2fb44af88ee9f301c6747fb3e4e) Merge branch 'open-webui:main' into user-placeholders ### 📊 Changes **7 files changed** (+364 additions, -4 deletions) <details> <summary>View changed files</summary> 📝 `backend/open_webui/routers/configs.py` (+1 -0) 📝 `backend/open_webui/utils/middleware.py` (+29 -3) 📝 `backend/open_webui/utils/tools.py` (+33 -0) 📝 `src/lib/components/AddToolServerModal.svelte` (+66 -0) 📝 `src/lib/components/chat/MessageInput/IntegrationsMenu.svelte` (+55 -1) ➕ `src/lib/components/chat/MessageInput/PlaceholderConfigModal.svelte` (+116 -0) ➕ `src/lib/components/chat/Settings/Tools/PlaceholderValues.svelte` (+64 -0) </details> ### 📄 Description # Pull Request Checklist ### Note to first-time contributors: Please open a discussion post in [Discussions](https://github.com/open-webui/open-webui/discussions) to discuss your idea/fix with the community before creating a pull request, and describe your changes before submitting a pull request. This is to ensure large feature PRs are discussed with the community first, before starting work on it. If the community does not want this feature or it is not relevant for Open WebUI as a project, it can be identified in the discussion before working on the feature and submitting the PR. **Before submitting, make sure you've checked the following:** - [x] **Target branch:** Verify that the pull request targets the `dev` branch. **Not targeting the `dev` branch will lead to immediate closure of the PR.** - [x] **Description:** Provide a concise description of the changes made in this pull request down below. - [x] **Changelog:** Ensure a changelog entry following the format of [Keep a Changelog](https://keepachangelog.com/) is added at the bottom of the PR description. - [ ] **Documentation:** If necessary, update relevant documentation [Open WebUI Docs](https://github.com/open-webui/docs) like environment variables, the tutorials, or other documentation sources. - [ ] **Dependencies:** Are there any new dependencies? Have you updated the dependency versions in the documentation? - [x] **Testing:** Perform manual tests to **verify the implemented fix/feature works as intended AND does not break any other functionality**. Take this as an opportunity to **make screenshots of the feature/fix and include it in the PR description**. - [x] **Agentic AI Code:** Confirm this Pull Request is **not written by any AI Agent** or has at least **gone through additional human review AND manual testing**. If any AI Agent is the co-author of this PR, it may lead to immediate closure of the PR. - [x] **Code review:** Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards? - [x] **Title Prefix:** To clearly categorize this pull request, prefix the pull request title using one of the following: - **BREAKING CHANGE**: Significant changes that may affect compatibility - **build**: Changes that affect the build system or external dependencies - **ci**: Changes to our continuous integration processes or workflows - **chore**: Refactor, cleanup, or other non-functional code changes - **docs**: Documentation update or addition - **feat**: Introduces a new feature or enhancement to the codebase - **fix**: Bug fix or error correction - **i18n**: Internationalization or localization changes - **perf**: Performance improvement - **refactor**: Code restructuring for better maintainability, readability, or scalability - **style**: Changes that do not affect the meaning of the code (white space, formatting, missing semi-colons, etc.) - **test**: Adding missing tests or correcting existing tests - **WIP**: Work in progress, a temporary label for incomplete or ongoing work # Changelog Entry - Add Dynamic user-specific headers inputs for MCP tool server headers w/ ({{VARIABLE_NAME}} templating (Header keys defined by admin side). No dependencies were added/changed to integrate this feature. ### Description - This PR adds a user-specific placeholder system for MCP (Model Context Protocol) tool server headers, enabling dynamic header configuration per user. Administrators can define placeholder names in tool server connections, and each user can provide their own values for these placeholders. This allows multi-tenant scenarios where different users can use the same tool server with their own credentials. ### Added - Backend: - Added placeholders field to ToolServerConnection model in backend/open_webui/routers/configs.py - Added replace_placeholders_in_headers() utility function in backend/open_webui/utils/tools.py to replace {{PLACEHOLDER_NAME}} patterns with user-provided values - Integrated placeholder replacement in middleware for both chat payload processing and MCP server connections - Frontend: - Added placeholder input fields in AddToolServerModal.svelte allowing admins to define placeholder names when configuring tool servers - Added "Configure Placeholders" button in IntegrationsMenu.svelte for tools that require placeholder values - Created new PlaceholderConfigModal.svelte component for users to enter their placeholder values - Created new PlaceholderValues.svelte component for settings page placeholder management - Integrated placeholder storage in user settings via tool_server_placeholders field ### Changed - Modified process_chat_payload() and process_chat_response() in backend/open_webui/utils/middleware.py to include user's tool_server_placeholders in extra params - Updated get_tools() function to apply placeholder replacement to MCP connection headers ### Deprecated - None ### Removed - None ### Fixed - None ### Security - User placeholder values are stored in user settings and are private to each user - Placeholder replacement happens server-side to prevent exposure of sensitive values - Each user can only access their own placeholder values ### Breaking Changes - **BREAKING CHANGE**: None --- ### Additional Information - None ### Screenshots or Videos Here are the screenshoots from my manual integration tests: - <img width="1037" height="1600" alt="image" src="https://github.com/user-attachments/assets/6f83aadb-d0db-485b-ac02-38df10e4af2e" /> - <img width="845" height="1250" alt="image" src="https://github.com/user-attachments/assets/baa6eef7-fd0a-40fa-bbb7-05623cd2b10c" /> - <img width="845" height="1250" alt="image" src="https://github.com/user-attachments/assets/7c64c117-f7b2-4023-b914-7ba224d64c09" /> ### Contributor License Agreement 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 2026-04-29 23:50:17 -05:00
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Reference: github-starred/open-webui#48240
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