mcp-server-kubernetes
Version:
MCP server for interacting with Kubernetes clusters via kubectl
113 lines (112 loc) • 4.51 kB
JavaScript
import { McpError, ErrorCode } from "@modelcontextprotocol/sdk/types.js";
export const getResourceHandlers = (k8sManager) => ({
listResources: async () => {
return {
resources: [
{
uri: "k8s://default/pods",
name: "Kubernetes Pods",
mimeType: "application/json",
description: "List of pods in the default namespace",
},
{
uri: "k8s://default/deployments",
name: "Kubernetes Deployments",
mimeType: "application/json",
description: "List of deployments in the default namespace",
},
{
uri: "k8s://default/services",
name: "Kubernetes Services",
mimeType: "application/json",
description: "List of services in the default namespace",
},
{
uri: "k8s://namespaces",
name: "Kubernetes Namespaces",
mimeType: "application/json",
description: "List of all namespaces",
},
{
uri: "k8s://nodes",
name: "Kubernetes Nodes",
mimeType: "application/json",
description: "List of all nodes in the cluster",
},
],
};
},
readResource: async (request) => {
try {
const uri = request.params.uri;
const parts = uri.replace("k8s://", "").split("/");
const isNamespaces = parts[0] === "namespaces";
const isNodes = parts[0] === "nodes";
if ((isNamespaces || isNodes) && parts.length === 1) {
const fn = isNodes ? "listNode" : "listNamespace";
const { items } = await k8sManager.getCoreApi()[fn]();
return {
contents: [
{
uri: request.params.uri,
mimeType: "application/json",
text: JSON.stringify(items, null, 2),
},
],
};
}
const [namespace, resourceType] = parts;
switch (resourceType) {
case "pods": {
const { items } = await k8sManager
.getCoreApi()
.listNamespacedPod({ namespace });
return {
contents: [
{
uri: request.params.uri,
mimeType: "application/json",
text: JSON.stringify(items, null, 2),
},
],
};
}
case "deployments": {
const { items } = await k8sManager
.getAppsApi()
.listNamespacedDeployment({ namespace });
return {
contents: [
{
uri: request.params.uri,
mimeType: "application/json",
text: JSON.stringify(items, null, 2),
},
],
};
}
case "services": {
const { items } = await k8sManager
.getCoreApi()
.listNamespacedService({ namespace });
return {
contents: [
{
uri: request.params.uri,
mimeType: "application/json",
text: JSON.stringify(items, null, 2),
},
],
};
}
default:
throw new McpError(ErrorCode.InvalidRequest, `Unsupported resource type: ${resourceType}`);
}
}
catch (error) {
if (error instanceof McpError)
throw error;
throw new McpError(ErrorCode.InternalError, `Failed to read resource: ${error}`);
}
},
});