Mastra supports the MCP 2026-07-28 specification via @mastra/mcp ^2.0.0

On October 21, 2026, Mastra announced support for the MCP 2026-07-28 specification via @mastra/mcp ^2.0.0. According to the Mastra Blog, the new specification removes the initialize handshake and the Mcp-Session-Id session; each request is independent and can scale horizontally on load balancers or serverless platforms like an ordinary HTTP service. The new specification also adds the Mcp-Method and Mcp-Name request headers, as well as ttlMs and cacheScope cache hints and the server/discover capability discovery method. In addition, Tasks have become a formal extension, and Mastra says it is still researching a support plan in @mastra/mcp. Currently, this matter has only the official Mastra blog as a source, and there are no subsequent development facts.

AI-generated from public reports

1. Oct 21· 1 reports

   Mastra supports the MCP 2026-07-28 specification

   Source:Mastra Blog