Open MCP Server

Implementation Reference

• src/tools/dev-tools.ts:79-98 (handler)

  Handler function that runs the git log command, parses output with parseGitLog, and returns JSON array of commits.

  async ({ path: gitPath, maxCount }) => {
    return wrapToolExecution(async () => {
      const { stdout } = await execAsync(
        `git log -${maxCount} --pretty=format:"%H|%an|%ad|%s" --date=iso`,
        { cwd: gitPath }
      );
  
      const commits = parseGitLog(stdout);
  
      return {
        content: [{
          type: "text" as const,
          text: JSON.stringify(commits, null, 2)
        }]
      };
    }, {
      errorCode: ERROR_CODES.GIT_OPERATION,
      context: "Failed to get git log"
    });
  }

• src/tools/dev-tools.ts:75-78 (schema)

  Zod input schema defining optional 'path' (git directory) and 'maxCount' (number of commits).

  {
    path: z.string().optional().default("."),
    maxCount: z.number().optional().default(DEFAULTS.MAX_COMMITS)
  },

• src/tools/dev-tools.ts:73-100 (registration)

  Registers the 'git_log' tool with the MCP server, including schema and handler function.

  function registerGitLog(server: McpServer): void {
    server.tool("git_log",
      {
        path: z.string().optional().default("."),
        maxCount: z.number().optional().default(DEFAULTS.MAX_COMMITS)
      },
      async ({ path: gitPath, maxCount }) => {
        return wrapToolExecution(async () => {
          const { stdout } = await execAsync(
            `git log -${maxCount} --pretty=format:"%H|%an|%ad|%s" --date=iso`,
            { cwd: gitPath }
          );
  
          const commits = parseGitLog(stdout);
  
          return {
            content: [{
              type: "text" as const,
              text: JSON.stringify(commits, null, 2)
            }]
          };
        }, {
          errorCode: ERROR_CODES.GIT_OPERATION,
          context: "Failed to get git log"
        });
      }
    );
  }

• src/tools/dev-tools.ts:102-113 (helper)

  Helper function to parse git log output into structured GitCommit objects.

  function parseGitLog(stdout: string): GitCommit[] {
    const lines = stdout.trim().split('\n').filter(line => line);
    return lines.map(line => {
      const [hash, author, date, message] = line.split('|');
      return {
        hash: hash.substring(0, 8),
        author,
        date,
        message
      };
    });
  }