Chrome 149 introduces an origin trial for WebMCP, a new browser API that lets developers declare structured tools and page state for AI agents interacting with web applications. Instead of agents guessing the purpose of UI elements, WebMCP allows explicit declaration of element purposes, enabling more accurate task completion. Use cases include structured form filling and developer diagnostics tools. The goal is to build a cross-browser standard for agentic web interactions, with feedback channels available via GitHub and the Chrome early preview program.
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