File size: 2,271 Bytes
e1cc3bc | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import type { CallToolResult, ReadResourceResult } from "@modelcontextprotocol/sdk/types.js";
import fs from "node:fs/promises";
import path from "node:path";
import { registerAppTool, registerAppResource, RESOURCE_MIME_TYPE } from "@modelcontextprotocol/ext-apps/server";
import { startServer } from "./server-utils.js";
const DIST_DIR = path.join(import.meta.dirname, "dist");
/**
* Creates a new MCP server instance with tools and resources registered.
*/
function createServer(): McpServer {
const server = new McpServer({
name: "Basic MCP App Server (Vue)",
version: "1.0.0",
});
// Two-part registration: tool + resource, tied together by the resource URI.
const resourceUri = "ui://get-time/mcp-app.html";
// Register a tool with UI metadata. When the host calls this tool, it reads
// `_meta.ui.resourceUri` to know which resource to fetch and render as an
// interactive UI.
registerAppTool(server,
"get-time",
{
title: "Get Time",
description: "Returns the current server time as an ISO 8601 string.",
inputSchema: {},
_meta: { ui: { resourceUri } },
},
async (): Promise<CallToolResult> => {
const time = new Date().toISOString();
return { content: [{ type: "text", text: time }] };
},
);
// Register the resource, which returns the bundled HTML/JavaScript for the UI.
registerAppResource(server,
resourceUri,
resourceUri,
{ mimeType: RESOURCE_MIME_TYPE },
async (): Promise<ReadResourceResult> => {
const html = await fs.readFile(path.join(DIST_DIR, "mcp-app.html"), "utf-8");
return {
contents: [
{ uri: resourceUri, mimeType: RESOURCE_MIME_TYPE, text: html },
],
};
},
);
return server;
}
async function main() {
if (process.argv.includes("--stdio")) {
await createServer().connect(new StdioServerTransport());
} else {
const port = parseInt(process.env.PORT ?? "3001", 10);
await startServer(createServer, { port, name: "Basic MCP App Server (Vue)" });
}
}
main().catch((e) => {
console.error(e);
process.exit(1);
});
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