now has experimental support for , the proposed web standard for exposing tools to in-browser agents. Add a single script tag to your site, and your existing MCP tools become available there too.mcp-handlerWebMCP Opt tools in by adding them to the object:experimental_webMcp Then load the script from your MCP endpoint with the parameter:?webmcp-script The script registers those tools with the page and proxies each call back to your MCP server as the signed-in user, so authenticated tools work without a browser-side OAuth flow.

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