Google Ships WebMCP, The Browser-Based Backbone For The Agentic Web

Google has shipped WebMCP through Chrome 146 Canary, a new protocol that lets websites expose structured functions directly to AI agents. The move comes weeks after Google launched its Universal Commerce Protocol, signaling the tech giant’s aggressive push to build infrastructure for an agent-first internet where AI assistants handle everything from travel booking to customer support without traditional screen scraping.

The protocol solves a fundamental inefficiency in how AI agents interact with websites today. Instead of burning thousands of tokens processing screenshots or parsing raw HTML to guess where buttons live, agents can now call structured functions like buyTicket(destination, date) directly through a new browser API called navigator.modelContext. Early benchmarks show a 67% reduction in computational overhead compared to visual agent-browser interactions.