TypeScript MCP on Cloudflare Workers

Last Updated: 2026-01-21 Versions: @modelcontextprotocol/sdk@1.25.3, hono@4.11.3, zod@4.3.5 Spec Version: 2025-11-25

Quick Start

npm install @modelcontextprotocol/sdk@latest hono zod
npm install -D @cloudflare/workers-types wrangler typescript

Transport Recommendation: Use StreamableHTTPServerTransport for production. SSE transport is deprecated and maintained for backwards compatibility only. Streamable HTTP provides better error recovery, bidirectional communication, and simplified deployment.

Basic MCP Server: