GitHub Enterprise MCP Server

Instructions

Implementation Reference

• src/tools/pull-requests.ts:243-263 (handler)

  The handler function that executes the merge-pull-request tool. Parses arguments using schema, calls GitHub API to merge the PR, and returns result.

  export async function mergePullRequest(args: unknown): Promise<any> {
    const { owner, repo, pull_number, commit_title, commit_message, merge_method } = MergePullRequestSchema.parse(args);
    const github = getGitHubApi();
  
    return tryCatchAsync(async () => {
      const { data } = await github.getOctokit().pulls.merge({
        owner,
        repo,
        pull_number,
        commit_title,
        commit_message,
        merge_method,
      });
  
      return {
        merged: data.merged,
        message: data.message,
        sha: data.sha,
      };
    }, 'Failed to merge pull request');
  }

• src/server.ts:868-902 (registration)

  Tool registration in the MCP server, defining name, description, and input schema.

  {
    name: 'merge-pull-request',
    description: 'Merge a pull request',
    inputSchema: {
      type: 'object',
      properties: {
        owner: {
          type: 'string',
          description: 'Repository owner (username or organization)',
        },
        repo: {
          type: 'string',
          description: 'Repository name',
        },
        pull_number: {
          type: 'number',
          description: 'Pull request number',
        },
        commit_title: {
          type: 'string',
          description: 'Title for the automatic commit message',
        },
        commit_message: {
          type: 'string',
          description: 'Extra detail to append to automatic commit message',
        },
        merge_method: {
          type: 'string',
          enum: ['merge', 'squash', 'rebase'],
          description: 'Merge method to use',
        },
      },
      required: ['owner', 'repo', 'pull_number'],
      additionalProperties: false,
    },

• src/server.ts:1238-1240 (registration)

  Dispatch case in the tool handler switch statement that calls the mergePullRequest function.

  case 'merge-pull-request':
    result = await mergePullRequest(parsedArgs);
    break;

• src/utils/validation.ts:154-159 (schema)

  Zod schema definition for validating inputs to the merge-pull-request tool, extended from OwnerRepoSchema.

  export const MergePullRequestSchema = OwnerRepoSchema.extend({
    pull_number: z.number().int().positive(),
    commit_title: z.string().optional(),
    commit_message: z.string().optional(),
    merge_method: z.enum(['merge', 'squash', 'rebase']).optional(),
  });