fix(excalidraw): send a static header so hosts treat the server as anonymous - #400
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…cursor/minu/excalidraw-anonymous-header chore: sync with cursor/plugins — Merge pull request cursor#400 from cursor/minu/excalidraw-anonymous-header
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Summary
Cursor cloud agents reported the Excalidraw plugin as needing authentication and never connected, even though
https://mcp.excalidraw.com/mcprequires no credentials (anonymousinitializereturns 200 and the server publishes no OAuth metadata, so there is no authorization flow to complete). The host skips the dial for marketplace plugin servers that ship only a URL when the user holds no OAuth token, and treats any server carrying custom headers as one that does not rely on OAuth.This adds a static, server-ignored
X-Cursor-Plugin: excalidrawheader so the plugin is dialed directly and its tools list normally. Version bumped to 1.0.1 with a changelog entry.Verification
node scripts/validate-plugins.mjs: All plugins validated successfully.POST /mcp initializewith the header returns 200.Note
Low Risk
Plugin metadata and MCP client config only; no changes to auth, credentials, or server-side behavior beyond an ignored request header.
Overview
Fixes Excalidraw MCP connections for Cursor cloud agents by configuring a static
X-Cursor-Plugin: excalidrawheader on the HTTP MCP server inmcp.json. The host was skipping dial for URL-only marketplace servers when no OAuth token was present; custom headers signal a non-OAuth (anonymous) server so the client connects and lists tools even thoughhttps://mcp.excalidraw.com/mcpneeds no credentials.Plugin version is bumped to 1.0.1 with a matching CHANGELOG entry.
Reviewed by Cursor Bugbot for commit ab0de64. Bugbot is set up for automated code reviews on this repo. Configure here.