By Steef-Jan Wiggers
Publication Date: 2026-02-05 10:19:00
Google Cloud has announced it’s contributing a gRPC transport package for the Model Context Protocol (MCP), plugging what the company calls a critical gap for organizations that have already standardized on gRPC across their microservices. MCP, Anthropic’s protocol that integrates AI agents with external tools and data, is currently gaining significant traction in enterprise environments.
Right now, MCP ships with JSON-RPC over HTTP as its transport. That works well when dealing with natural-language payloads, but it creates a real headache for developers already running gRPC everywhere. Other options? Rewrite services to speak MCP’s JSON transport, wire up transcoding proxies, or keep two separate implementations running side by side. None of those are great.
Spotify’s already felt this pain firsthand. Stefan Särne, senior staff engineer and tech lead for developer experience there, laid it out in Google’s blog post:
Because gRPC is our standard protocol in the…
