Latest MCP spec now supported in mcp-handler
mcp-handler 2.0 ships with Model Context Protocol v2 support — stateless, no Redis, native to Next.js and friends.
Why it matters
A developer tool for building MCP servers on web frameworks gains protocol v2 compatibility. Practitioners building Claude integrations or context-aware apps can now adopt the latest spec without session storage overhead.
The key facts
12 to knowmcp-handler 2.0 released with MCP TypeScript SDK v2 support
Supports Next.js, Nuxt, Svelte and other web frameworks
Stateless Streamable HTTP protocol served natively
Requires Node.js 20+
Deprecated HTTP+SSE transport removed; 1.x available for legacy clients
No Redis dependency or session storage required
Published July 28, 2026
Supports Next.js, Nuxt, Svelte, and other web frameworks
Deprecated HTTP+SSE transport removed; 410 Gone responses for legacy clients
Per-request metadata and server/discover protocol support
Node.js 20+ and zod 4 required
Backward compatibility layer for 2025-era Streamable HTTP clients
Go to the source
Vercel Blogvercel.com
Publisher excerpt: is now available with support for the and .mcp-handler@2.0.02026-07-28 Model Context Protocol specificationMCP TypeScript SDK v2 We originally built to make it easier to spin up MCP servers on popular web frameworks including Next, Nuxt, Svelte, and more.mcp-handler With the new 2.0 release, the…
