GitHub Automation

GitHub Automation via Rube MCP

Automate GitHub repository management, issue tracking, pull request workflows, branch operations, and CI/CD through Composio's GitHub toolkit.

Prerequisites

• Rube MCP must be connected (RUBE_SEARCH_TOOLS available)
• Active GitHub connection via RUBE_MANAGE_CONNECTIONS with toolkit github
• Always call RUBE_SEARCH_TOOLS first to get current tool schemas

Setup

Get Rube MCP: Add https://rube.app/mcp as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.

1. Verify Rube MCP is available by confirming RUBE_SEARCH_TOOLS responds
2. Call RUBE_MANAGE_CONNECTIONS with toolkit github
3. If connection is not ACTIVE, follow the returned auth link to complete GitHub OAuth
4. Confirm connection status shows ACTIVE before running any workflows

Core Workflows

1. Create and Manage Issues

When to use: User wants to create, list, or manage GitHub issues

Tool sequence:

1. GITHUB_LIST_REPOSITORIES_FOR_THE_AUTHENTICATED_USER - Find target repo if unknown [Prerequisite]
2. GITHUB_LIST_REPOSITORY_ISSUES - List existing issues (includes PRs) [Required]
3. GITHUB_CREATE_AN_ISSUE - Create a new issue [Required]
4. GITHUB_CREATE_AN_ISSUE_COMMENT - Add comments to an issue [Optional]
5. GITHUB_SEARCH_ISSUES_AND_PULL_REQUESTS - Search across repos by keyword [Optional]

Key parameters:

• owner: Repository owner (username or org), case-insensitive
• repo: Repository name without .git extension
• title: Issue title (required for creation)
• body: Issue description (supports Markdown)
• labels: Array of label names
• assignees: Array of GitHub usernames
• state: 'open', 'closed', or 'all' for filtering

Pitfalls:

• GITHUB_LIST_REPOSITORY_ISSUES returns both issues AND pull requests; check pull_request field to distinguish
• Only users with push access can set assignees, labels, and milestones; they are silently dropped otherwise
• Pagination: per_page max 100; iterate pages until empty

2. Manage Pull Requests

When to use: User wants to create, review, or merge pull requests

Tool sequence:

1. GITHUB_FIND_PULL_REQUESTS - Search and filter PRs [Required]
2. GITHUB_GET_A_PULL_REQUEST - Get detailed PR info including mergeable status [Required]
3. GITHUB_LIST_PULL_REQUESTS_FILES - Review changed files [Optional]
4. GITHUB_CREATE_A_PULL_REQUEST - Create a new PR [Required]
5. GITHUB_CREATE_AN_ISSUE_COMMENT - Post review comments [Optional]
6. GITHUB_LIST_CHECK_RUNS_FOR_A_REF - Verify CI status before merge [Optional]
7. GITHUB_MERGE_A_PULL_REQUEST - Merge after explicit user approval [Required]

Key parameters:

• head: Source branch with changes (must exist; for cross-repo: 'username:branch')
• base: Target branch to merge into (e.g., 'main')
• title: PR title (required unless issue number provided)
• merge_method: 'merge', 'squash', or 'rebase'
• state: 'open', 'closed', or 'all'

Pitfalls:

• GITHUB_CREATE_A_PULL_REQUEST fails with 422 if base/head are invalid, identical, or already merged
• GITHUB_MERGE_A_PULL_REQUEST can be rejected if PR is draft, closed, or branch protection applies
• Always verify mergeable status with GITHUB_GET_A_PULL_REQUEST immediately before merging
• Require explicit user confirmation before calling MERGE

3. Manage Repositories and Branches

When to use: User wants to create repos, manage branches, or update repo settings

Tool sequence:

1. GITHUB_LIST_REPOSITORIES_FOR_THE_AUTHENTICATED_USER - List user's repos [Required]
2. GITHUB_GET_A_REPOSITORY - Get detailed repo info [Optional]
3. GITHUB_CREATE_A_REPOSITORY_FOR_THE_AUTHENTICATED_USER - Create personal repo [Required]
4. GITHUB_CREATE_AN_ORGANIZATION_REPOSITORY - Create org repo [Alternative]
5. GITHUB_LIST_BRANCHES - List branches [Required]
6. GITHUB_CREATE_A_REFERENCE - Create new branch from SHA [Required]
7. GITHUB_UPDATE_A_REPOSITORY - Update repo settings [Optional]

Key parameters:

• name: Repository name
• private: Boolean for visibility
• ref: Full reference path (e.g., 'refs/heads/new-branch')
• sha: Commit SHA to point the new reference to
• default_branch: Default branch name

Pitfalls:

• GITHUB_CREATE_A_REFERENCE only creates NEW references; use GITHUB_UPDATE_A_REFERENCE for existing ones
• ref must start with 'refs/' and contain at least two slashes
• GITHUB_LIST_BRANCHES paginates via page/per_page; iterate until empty page
• GITHUB_DELETE_A_REPOSITORY is permanent and irreversible; requires admin privileges

4. Search Code and Commits

When to use: User wants to find code, files, or commits across repositories

Tool sequence:

1. GITHUB_SEARCH_CODE - Search file contents and paths [Required]
2. GITHUB_SEARCH_CODE_ALL_PAGES - Multi-page code search [Alternative]
3. GITHUB_SEARCH_COMMITS_BY_AUTHOR - Search commits by author/date/org [Required]
4. GITHUB_LIST_COMMITS - List commits for a specific repo [Alternative]
5. GITHUB_GET_A_COMMIT - Get detailed commit info [Optional]
6. GITHUB_GET_REPOSITORY_CONTENT - Get file content [Optional]

Key parameters:

• q: Search query with qualifiers (language:python, repo:owner/repo, extension:js)
• owner/repo: For repo-specific commit listing
• author: Filter by commit author
• since/until: ISO 8601 date range for commits

Pitfalls:

• Code search only indexes files under 384KB on default branch
• Maximum 1000 results returned from code search
• GITHUB_SEARCH_COMMITS_BY_AUTHOR requires keywords in addition to qualifiers; qualifier-only queries are not allowed
• GITHUB_LIST_COMMITS returns 409 on empty repos