Kubernetes MCP Server

Instructions

Implementation Reference

• server.js:1433-1439 (handler)

  The handler function for the 'list-namespaces' tool within the CallToolRequestSchema handler. It executes the kubectl command to list all namespaces and returns the output as text content.

  case "list-namespaces": {
    const cmd = `kubectl get namespaces -o wide`;
    const { stdout } = await execAsync(cmd);
    return {
      content: [{ type: "text", text: stdout || "No namespaces found" }]
    };
  }

• server.js:60-67 (schema)

  The schema definition for the 'list-namespaces' tool in the tools array, specifying name, description, and empty input schema (no parameters required).

  {
    name: "list-namespaces",
    description: "List all Kubernetes namespaces",
    inputSchema: {
      type: "object",
      properties: {}
    }
  },

• server.js:1392-1394 (registration)

  Registration of the ListToolsRequestSchema handler that returns the full list of tools, including 'list-namespaces'.

  server.setRequestHandler(ListToolsRequestSchema, async () => {
    return { tools };
  });