Kubernetes MCP Server

Instructions

Implementation Reference

• server.js:1727-1739 (handler)

  The execution handler for the 'cp' tool. It constructs a 'kubectl cp' command to copy files from a source (assumed local) to the pod's destination path, using provided namespace and container if specified.

  case "cp": {
    const { pod, source, destination, namespace, container } = args;
    const nsArg = namespace ? `-n ${namespace}` : "";
    const containerArg = container ? `-c ${container}` : "";
    const cmd = `kubectl cp ${source} ${pod}:${destination} ${nsArg} ${containerArg}`;
    const { stdout } = await execAsync(cmd);
    return {
      content: [{ 
        type: "text", 
        text: stdout || `File copied from ${source} to ${pod}:${destination}` 
      }]
    };
  }

• server.js:534-562 (schema)

  The input schema definition for the 'cp' tool, specifying parameters like pod name, source and destination paths, namespace, and container.

    name: "cp",
    description: "Copy files to/from a pod",
    inputSchema: {
      type: "object",
      properties: {
        pod: { 
          type: "string",
          description: "The name of the pod"
        },
        source: { 
          type: "string",
          description: "Source path (local:path or pod:path)"
        },
        destination: { 
          type: "string",
          description: "Destination path (local:path or pod:path)"
        },
        namespace: { 
          type: "string",
          description: "The namespace of the pod (optional, defaults to current context namespace)"
        },
        container: { 
          type: "string",
          description: "The container name (if pod has multiple containers)"
        }
      },
      required: ["pod", "source", "destination"]
    }
  },

• server.js:1392-1394 (registration)

  Registration of the tool list handler, which returns the array of tools including the 'cp' tool schema.

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