How to connect GitHub to Codex

1. 1. Enable GitHub in Metorial

   In your Metorial portal, enable the GitHub MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server and sign in

   The Codex CLI, IDE extension and ChatGPT desktop app share this config.

   Copy

   codex mcp add metorial --url <your-magic-mcp-url>
   codex mcp login metorial

3. 3. Check the connection

   Type /mcp in Codex to see Metorial and its GitHub tools.

• Manage Issue: Create or update a GitHub issue, including issue type, lifecycle state, duplicate closure, and organization-defined issue fields.
• Create Release: Create a new release for a GitHub repository with a tag, name, release notes, and draft/pre-release options.
• List Commits: List commits on a repository branch with filtering by SHA, path, author, or date range.
• List Repositories: List repositories for the authenticated user or a specific organization.
• Review Pull Request: Create, submit, or delete pull request reviews; resolve or unresolve review threads; add line or file comments to a pending review; and reply or react to review comments.
• List Branches: List branches in a GitHub repository, optionally filtered to protected or unprotected branches.
• Manage Gist: Create, read, update, or delete GitHub Gists (code snippets).
• Manage File Content: Read, create, update, or delete a file in a GitHub repository.
• Comment on Issue: Add a comment and/or reaction to a GitHub issue or pull request.
• Get User: Retrieve a GitHub user's profile.
• List Pull Requests: List pull requests in a GitHub repository with filtering by state, head/base branch, and sorting options.
• Search GitHub: Search across GitHub for repositories, code, issues/pull requests, users, or organizations using GitHub's search syntax.
• Merge Pull Request: Merge a pull request using the specified merge method (merge commit, squash, or rebase).
• Get Repository: Retrieve detailed information about a GitHub repository including its settings, statistics, and metadata.
• Manage Labels: List, create, update, rename, or delete labels in a GitHub repository.
• And 59 more on the GitHub MCP server page.

• Limit which GitHub tools Codex sees with enabled_tools and disabled_tools on the metorial server in config.toml.
• Set default_tools_approval_mode to auto, prompt, writes or approve. writes prompts only for tools that are not marked read-only.
• Type /mcp in the composer to see the connected servers.
• Override the approval behavior for a single GitHub tool with tools.<tool>.approval_mode.

Metorial is listed but tools are missing

Codex can connect without credentials and then see nothing. Run codex mcp login metorial to complete the OAuth sign-in.

Metorial times out at startup

Codex waits 10 seconds by default. Raise startup_timeout_sec under [mcp_servers.metorial] in ~/.codex/config.toml.

Long tool calls fail after a minute

The default tool timeout is 60 seconds. Raise tool_timeout_sec for the metorial server in config.toml.

Based on the Codex MCP documentation.