codex mcp add github --url YOUR_APPROVED_GITHUB_MCP_URL
Follow a practical setup path, understand the permission boundary and leave with a configuration you can review and adapt.
When GitHub MCP is useful
A cloned repository already gives Codex access to local files and Git history. GitHub MCP becomes useful when a task needs remote objects such as issues, pull requests, review comments or workflow status.
Treat the connection as a separate permission boundary. Grant only the repositories and actions required for the workflow you actually want.
Register the approved remote server
Use the GitHub MCP endpoint approved for your account or organisation. Complete its supported authentication flow and verify the server before asking Codex to perform a task.
codex mcp add github --url YOUR_APPROVED_GITHUB_MCP_URL
codex mcp login github
codex mcp listDo not copy an unknown endpoint or token from an untrusted tutorial. Confirm the provider and URL first.
Begin with read-only repository context
Ask Codex to list or summarise a single issue before allowing comments, pull-request changes or workflow triggers.
- Limit access to selected repositories.
- Prefer read-only tools for the first test.
- Require approval for comments, merges and workflow runs.
- Confirm the resolved repository before every write.
A practical issue-to-code workflow
Open the correct local repository, ask Codex to read the linked issue, compare its acceptance criteria with the current code and propose an implementation plan. Keep the first pass non-mutating so you can verify the correct issue and repository were selected.
Download this guide’s configuration.
Review the endpoint, package, credentials and permission settings before using it in a trusted environment.
Frequently asked questions
Not for ordinary local files and Git history. Use GitHub MCP when you need remote issues, pull requests, reviews or workflow data.
Sensitive writes such as comments, merges and workflow triggers should remain reviewable and require approval.
Provider endpoints, authentication requirements and supported options can change. Confirm current details before connecting a sensitive service.