Kubernetes MCP Server

Instructions

Implementation Reference

• server.js:1970-1978 (handler)

  Handler function that executes the tool logic by running kubectl get networkpolicies command with optional namespace flag.

  case "list-networkpolicies": {
    const { namespace } = args || {};
    const nsArg = namespace ? `-n ${namespace}` : "";
    const cmd = `kubectl get networkpolicies ${nsArg} -o wide`;
    const { stdout } = await execAsync(cmd);
    return {
      content: [{ type: "text", text: stdout || "No network policies found" }]
    };
  }

• server.js:888-898 (schema)

  Input schema definition for the list-networkpolicies tool, defining optional namespace parameter.

  name: "list-networkpolicies",
  description: "List Kubernetes network policies in a namespace",
  inputSchema: {
    type: "object",
    properties: {
      namespace: { 
        type: "string",
        description: "The namespace to list network policies from (optional, defaults to current context namespace)"
      }
    }
  }

• server.js:1392-1394 (registration)

  Tool registration via the ListToolsRequestHandler that returns the tools array containing list-networkpolicies.

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