---
'@modelcontextprotocol/server': patch
'@modelcontextprotocol/client': patch
'@modelcontextprotocol/core': patch
'@modelcontextprotocol/server-legacy': patch
'@modelcontextprotocol/codemod': patch
'@modelcontextprotocol/express': patch
'@modelcontextprotocol/hono': patch
'@modelcontextprotocol/fastify': patch
'@modelcontextprotocol/node': patch
---

First beta release of SDK v2 with support for the MCP 2026-07-28 specification
revision. See the migration guides for upgrading from v1
(`docs/migration/upgrade-to-v2.md`) and adopting the 2026-07-28 revision
(`docs/migration/support-2026-07-28.md`).