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[BUG] Title: GitHub connector never completes App installation — write access fails with 403 #82125

Description

@orlagilroyhk-maker

Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Title: GitHub connector never completes App installation — write access fails with 403

Summary: Connected the orlagilroyhk-maker/awaywithya repo to a Claude Code session. Read access works, but every write attempt (git push, and GitHub MCP tools create_branch/push_files) fails with 403 Resource not accessible by integration.

Root cause found: On github.com/settings/installations, the "Installed GitHub Apps" tab does not list "Claude" at all (only other unrelated apps — Render, Vercel — are installed there). "Claude" only appears under the separate "Authorized GitHub Apps" tab, which is a lightweight OAuth-only authorization, not a real App installation with repo permissions.

Tried: Disconnecting and reconnecting the GitHub connector in claude.ai settings. This did not create an entry under "Installed GitHub Apps" — the underlying installation step appears to be silently failing or being skipped.

Expected: Connecting a repo for write access should result in an actual GitHub App installation on that repo with Contents: Read & write permission, not just an OAuth authorization.

Repo affected: orlagilroyhk-maker/awaywithya

Once support fixes the installation, come back and I'll p

What Should Happen?

Title: GitHub connector never completes App installation — write access fails with 403

Summary: Connected the orlagilroyhk-maker/awaywithya repo to a Claude Code session. Read access works, but every write attempt (git push, and GitHub MCP tools create_branch/push_files) fails with 403 Resource not accessible by integration.

Root cause found: On github.com/settings/installations, the "Installed GitHub Apps" tab does not list "Claude" at all (only other unrelated apps — Render, Vercel — are installed there). "Claude" only appears under the separate "Authorized GitHub Apps" tab, which is a lightweight OAuth-only authorization, not a real App installation with repo permissions.

Tried: Disconnecting and reconnecting the GitHub connector in claude.ai settings. This did not create an entry under "Installed GitHub Apps" — the underlying installation step appears to be silently failing or being skipped.

Expected: Connecting a repo for write access should result in an actual GitHub App installation on that repo with Contents: Read & write permission, not just an OAuth authorization.

Repo affected: orlagilroyhk-maker/awaywithya

Once support fixes the installation, come back and I'll p

Error Messages/Logs

Title: GitHub connector never completes App installation — write access fails with 403

Summary: Connected the orlagilroyhk-maker/awaywithya repo to a Claude Code session. Read access works, but every write attempt (git push, and GitHub MCP tools create_branch/push_files) fails with 403 Resource not accessible by integration.

Root cause found: On github.com/settings/installations, the "Installed GitHub Apps" tab does not list "Claude" at all (only other unrelated apps — Render, Vercel — are installed there). "Claude" only appears under the separate "Authorized GitHub Apps" tab, which is a lightweight OAuth-only authorization, not a real App installation with repo permissions.

Tried: Disconnecting and reconnecting the GitHub connector in claude.ai settings. This did not create an entry under "Installed GitHub Apps" — the underlying installation step appears to be silently failing or being skipped.

Expected: Connecting a repo for write access should result in an actual GitHub App installation on that repo with Contents: Read & write permission, not just an OAuth authorization.

Repo affected: orlagilroyhk-maker/awaywithya

Once support fixes the installation, come back and I'll p

Steps to Reproduce

Title: GitHub connector never completes App installation — write access fails with 403

Summary: Connected the orlagilroyhk-maker/awaywithya repo to a Claude Code session. Read access works, but every write attempt (git push, and GitHub MCP tools create_branch/push_files) fails with 403 Resource not accessible by integration.

Root cause found: On github.com/settings/installations, the "Installed GitHub Apps" tab does not list "Claude" at all (only other unrelated apps — Render, Vercel — are installed there). "Claude" only appears under the separate "Authorized GitHub Apps" tab, which is a lightweight OAuth-only authorization, not a real App installation with repo permissions.

Tried: Disconnecting and reconnecting the GitHub connector in claude.ai settings. This did not create an entry under "Installed GitHub Apps" — the underlying installation step appears to be silently failing or being skipped.

Expected: Connecting a repo for write access should result in an actual GitHub App installation on that repo with Contents: Read & write permission, not just an OAuth authorization.

Repo affected: orlagilroyhk-maker/awaywithya

Once support fixes the installation, come back and I'll p

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

Title: GitHub connector never completes App installation — write access fails with 403

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

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