npm-mcp

Instructions

Implementation Reference

• src/index.ts:285-295 (handler)

  The implementation of the 'whoami' MCP tool handler.

  async () => {
    try {
      const { stdout } = await run(["whoami"]);
      return { content: [{ type: "text", text: stdout.trim() }] };
    } catch (e: any) {
      const hint = NPM_TOKEN
        ? "Token is set but invalid."
        : "No NPM_TOKEN set. Add it to your MCP server config env, or run `npm login` first.";
      return {
        content: [{ type: "text", text: `Not logged in. ${hint}\n${e.stderr || e.message}` }],
        isError: true,

• src/index.ts:281-284 (registration)

  Registration of the 'whoami' tool.

  server.tool(
    "whoami",
    "Check which npm user is currently authenticated. If not logged in, set NPM_TOKEN env var in MCP config.",
    {},