Cloudflare is launching a developer preview of WebMCP, a feature that adds a Model Context Protocol (MCP) interface to any website hosted on Cloudflare with a single dashboard toggle — no code changes or origin modifications required. WebMCP is a new browser standard (shipping experimentally in Chrome 146) that exposes tools via `document.modelContext`, allowing AI agents browsing a site to interact with it directly rather than scraping. Cloudflare injects a small bridge script at the edge using HTMLRewriter, which registers tool packs in the visitor's browser. Two tool packs are included in the preview: a Content Credentials pack (reads C2PA image metadata) and a Site MCP Server pack (proxies an existing MCP server endpoint using the visitor's session). All tools run client-side with no server round-trips to Cloudflare. BrowserRun, Cloudflare's remote browser, can discover and call these tools, completing the agent-browsing loop.
