Stateless MCP

This is the simplest way to connect and host an MCP server. This way, you can handle all incoming requests without needing to reconnect to the transport for each request. The can be used when you don't need to maintain any state across multiple requests like user preferences, database connections, etc.

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StreamableHTTPTransport } from "@hono/mcp";
import { Hono } from "hono";

const app = new Hono();
const mcpServer = new McpServer({
	name: "my-mcp-server",
	version: "1.0.0",
});

const transport = new StreamableHTTPTransport();

app.all("/mcp", async (c) => {
    if (!mcpServer.isConnected()) {
        // Connecting the MCP server to the transport
        await mcpServer.connect(transport);
    }

    return transport.handleRequest(c);
});

export default app;

Characteristics

No memory of previous requests or responses
Each call is processed in isolation
Multiple clients can interact without interference
Easy to implement

Example Use Cases

Weather API MCP Server
Currency Conversion MCP Server
Password Generator MCP Server

Characteristics

Example Use Cases

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