WebMCP support now available in mcp-handler

Mcp-handler@2.2.0 now ships experimental support for WebMCP, the proposed web standard for exposing tools to in-browser agents, according to the project's maintainers. Developers opt tools in via the experimental_webMcp object and load the script from their MCP endpoint with the ?webmcp-script parameter, which registers those tools with the page and proxies each call back to the MCP server as the signed-in user, so authenticated tools work without a browser-side OAuth flow.

mcp-handler now has experimental support for WebMCP https://github.com/webmachinelearning/webmcp , 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. Opt tools in by adding them to the experimental webMcp object: Then load the script from your MCP endpoint with the ?webmcp-script parameter: 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. Upgrade to mcp-handler@2.2.0 and read the documentation https://github.com/vercel/mcp-handler/blob/main/docs/WEBMCP.md to get started.