typescript-mcp

Last Updated : 2026-01-21 Versions : @modelcontextprotocol/sdk@1.25.3, hono@4.11.3, zod@4.3.5 Spec Version : 2025-11-25 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 : Deploy : wrangler deploy API Key (KV-based): Cloudflare Zero Trust : Tasks enable long-running operations that return a handle for polling results later. Useful for expensive computations, batch processing, or operations that may need input. Task States : working → input_required → completed / failed / cancelled Server Capability Declaration : Tool with Task Support : Client Task Request : Task Lifecycle : 📚 Spec : Servers can now include tool definitions in sampling requests , enabling server-side agent loops. Use Case : Server needs to orchestrate multi-step reasoning using LLM + tools without custom frameworks. Key Points : 📚 Spec : SEP-1577 D1 Database : KV, R2, Vectorize : See references/cloudflare-integration.md This skill prevents 20 production issues documented in official MCP SDK and Cloudflare repos: Error : "Cannot read properties of undefined (reading 'map')" Source : honojs/hono#3955, honojs/vite-plugins#237 Why It Happens : Incorrect export format with Vite build causes...