GitHub MCP Server

Instructions

Implementation Reference

• operations/pulls.ts:277-286 (handler)

  The main handler function that executes the tool logic by calling the GitHub API to fetch reviews for a specific pull request and parsing the response.

  export async function getPullRequestReviews(
    owner: string,
    repo: string,
    pullNumber: number
  ): Promise<z.infer<typeof PullRequestReviewSchema>[]> {
    const response = await githubRequest(
      `https://api.github.com/repos/${owner}/${repo}/pulls/${pullNumber}/reviews`
    );
    return z.array(PullRequestReviewSchema).parse(response);
  }

• operations/pulls.ts:156-160 (schema)

  Input schema validation using Zod for the get_pull_request_reviews tool parameters.

  export const GetPullRequestReviewsSchema = z.object({
    owner: z.string().describe("Repository owner (username or organization)"),
    repo: z.string().describe("Repository name"),
    pull_number: z.number().describe("Pull request number")
  });

• index.ts:195-199 (registration)

  Tool registration in the list of available tools, including name, description, and input schema reference.

  {
    name: "get_pull_request_reviews",
    description: "Get the reviews on a pull request",
    inputSchema: zodToJsonSchema(pulls.GetPullRequestReviewsSchema)
  },

• index.ts:566-576 (handler)

  Dispatch handler in the main switch statement that parses arguments, calls the pulls.getPullRequestReviews function, and formats the response.

  case "get_pull_request_reviews": {
    const args = pulls.GetPullRequestReviewsSchema.parse(request.params.arguments);
    const reviews = await pulls.getPullRequestReviews(
      args.owner,
      args.repo,
      args.pull_number
    );
    return {
      content: [{ type: "text", text: JSON.stringify(reviews, null, 2) }],
    };
  }