Raw object schema deprecated

[pradyumna-r]

Existing documentation URL(s)

https://developers.cloudflare.com/agents/model-context-protocol/apis/handler-api/#example

What changes are you suggesting?

Change this example:

import { McpServer } from "@modelcontextprotocol/server";
import { createMcpHandler } from "agents/mcp/server";
import { z } from "zod";

function createServer() {
	const server = new McpServer({
		name: "hello-server",
		version: "1.0.0",
	});

	server.registerTool(
		"hello",
		{
			description: "Return a greeting",
			inputSchema: { name: z.string().optional() },
		},
		async ({ name }) => ({
			content: [{ type: "text", text: `Hello, ${name ?? "World"}!` }],
		}),
	);

	return server;
}

export default {
	fetch(request, env, ctx) {
		return createMcpHandler(createServer)(request, env, ctx);
	},
} satisfies ExportedHandler;

to this:

import { McpServer } from "@modelcontextprotocol/server";
import { createMcpHandler } from "agents/mcp/server";
import { z } from "zod";

function createServer() {
    const server = new McpServer({
        name: "hello-server",
        version: "1.0.0",
    });

    server.registerTool(
        "hello",
        {
            description: "Return a greeting",
            inputSchema: z.object({
                name: z.string().optional().describe("Name to greet"),
            }),
        },
        async ({ name }) => ({
            content: [{ type: "text", text: `Hello, ${name ?? "World"}!` }],
        }),
    );

    return server;
}

Additional information

Type signature confirms we need to wrap the raw object in zod.