WebMCP Origin Trial Launches in Chrome 149 June 2: Websites Become AI Agent Tools, Early Benchmarks Show 8-12x Faster Than Vision-Based Agents

Chrome for Developers·high signal

Google's WebMCP — an open web standard letting websites declare structured tools (JS functions, HTML forms) for AI agents — enters public origin trial in Chrome 149 on June 2. Early benchmarks show end-to-end agent task completion 8-12x faster on WebMCP-enabled sites versus vision-based screen-scraping agents. Microsoft co-authored the spec and shipped Edge 147 support in March. This eliminates the screenshot-parse-click loop that makes current browser agents slow and brittle, replacing it with direct function calls.