GitHub Integration MCP Server
Extracts diffs from GitHub Pull Requests, allowing users to retrieve and analyze changes between branches in a repository.
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README
GitHub Integration
The GitHub MCP server provides functionality to extract diffs from Pull Requests.
Available Tools
get_diff_pr
Retrieves the diff content from a GitHub Pull Request.
Parameters:
owner: Repository owner/organization namerepo: Repository namepr_number: Pull Request number
Returns: Object containing:
content: String containing the PR diff
Authentication
Required: Set the GitHub Personal Access Token as an environment variable:
export GITHUB_TOKEN=<your-github-token>
The token needs at least repo scope permissions to access private repositories. For public repositories, a token with public_repo scope is sufficient.
Error Handling
The server implements standard error handling:
- Missing/invalid token returns
ErrorCode.AuthenticationError - Invalid repository details return
ErrorCode.InvalidParams - Non-existent PR returns
ErrorCode.NotFound - Failed diff fetches return formatted error messages
- Graceful shutdown on SIGINT
Technical Details
- Built using the Highlight AI MCP SDK
- Uses GitHub REST API v3
- Input validation via Zod
- Runs as a stdio-based MCP server
- Supports Node.js >=18.0.0
Limitations
- Rate limits apply based on GitHub API restrictions
- Large diffs may be truncated according to GitHub API limits
- Token requires appropriate repository access permissions
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