GitHub's MCP server adopts the stateless protocol spec ahead of the July 28 cutover

GitHub announced on July 23 that its MCP server supports the next Model Context Protocol specification before its official finalization. The new spec removes session headers and the initialization handshake, making the protocol core stateless so MCP deployments can scale behind ordinary load balancers. GitHub says the major SDKs preserve backwards compatibility, so existing integrations keep working.

What it means Teams running MCP servers or clients should check their stack against the stateless spec before the ecosystem finishes the cutover.