This document shows the implementation status of WebMCP across different browsers and agents.
Experimental support is added to Leo AI chat.
WebMCP is supported in ChatGPT Desktop.
An Origin Trial is live in Chrome 149.
For local development, enable the about:flags#enable-webmcp-testing flag.
An Origin Trial is live in Edge 150.
Refer to Chrome implementation status for platform support.
WebMCP for Web Apps is coming soon, letting Meta AI on the glasses call tools registered with document.modelContext.registerTool().
It is off by default and enabled per device, either in Developer Mode or for wearers in the rollout.