Kubernetes MCP Server

Instructions

Implementation Reference

• server.js:2130-2140 (handler)

  Handler that executes the helm install command based on input parameters using execAsync.

  case "helm-install": {
    const { name, chart, namespace, values, version } = args;
    const nsArg = namespace ? `-n ${namespace}` : "";
    const versionArg = version ? `--version ${version}` : "";
    const valuesArg = values ? `-f <(echo '${values}')` : "";
    const cmd = `helm install ${name} ${chart} ${nsArg} ${versionArg} ${valuesArg}`;
    const { stdout } = await execAsync(cmd);
    return {
      content: [{ type: "text", text: stdout || `Helm chart ${chart} installed as ${name}` }]
    };
  }

• server.js:1179-1207 (schema)

  Schema definition for the helm-install tool, including input parameters and requirements.

    name: "helm-install",
    description: "Install a Helm chart",
    inputSchema: {
      type: "object",
      properties: {
        name: { 
          type: "string",
          description: "The name of the release"
        },
        chart: { 
          type: "string",
          description: "The chart reference (repo/chart or path)"
        },
        namespace: { 
          type: "string",
          description: "The namespace to install into (optional, defaults to current context namespace)"
        },
        values: { 
          type: "string",
          description: "Values to override (YAML string)"
        },
        version: { 
          type: "string",
          description: "Chart version to install"
        }
      },
      required: ["name", "chart"]
    }
  },

• server.js:1392-1394 (registration)

  Registration of all tools including helm-install via the ListToolsRequestSchema handler that returns the tools array.

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