fix(github): send User-Agent on all GitHub API calls#400
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viktormarinho merged 1 commit intomainfrom Apr 23, 2026
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Cloudflare Workers' fetch doesn't set a default User-Agent, and GitHub's API rejects UA-less requests with 403 "Request forbidden by administrative rules" — the worker was crashing at upstream tool discovery (getAppInstallationToken) on the very first request. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Post-deploy of #396, the worker crashed with CF error 1101 on the first
/mcprequest. Wrangler tail showed a 403 from GitHub:Cloudflare Workers'
fetchdoesn't set a default `User-Agent`; Node/k8s did, which hid the issue until the cutover. Added `User-Agent: deco-cms-github-mcp` to every outbound GitHub API call: JWT-authed installations list, user installations list, OAuth token exchange/refresh, and the MCP proxy transport.Test plan
🤖 Generated with Claude Code
Summary by cubic
Add a
User-Agent: deco-cms-github-mcpheader to all GitHub API requests to stop 403s in Cloudflare Workers and fix the CF 1101 crash on the first/mcprequest.github-app-auth.ts)installation-map.ts)github-client.ts)mcp-proxy.ts)Written for commit a2bc3cd. Summary will update on new commits.