npm-mcp

Instructions

Implementation Reference

• src/index.ts:766-785 (handler)

  Implementation of the "explain" tool for the npm-mcp server.

  server.tool(
    "explain",
    "Explain why a package is installed (show dependency chain)",
    {
      path: z.string().describe("Absolute path to the package directory"),
      package: z.string().describe("Package name to explain"),
    },
    async ({ path, package: pkg }) => {
      const args = ["explain", pkg, "--json"];
      try {
        const { stdout } = await run(args, path);
        return { content: [{ type: "text", text: stdout }] };
      } catch (e: any) {
        return {
          content: [{ type: "text", text: `Error: ${e.stderr || e.message}` }],
          isError: true,
        };
      }
    },
  );