Last week, in the middle of its "Agents Week," Cloudflare shipped something that would have sounded like science fiction a year ago: a single dashboard toggle that makes any site on its network usable by browser AI agents — "no code and nothing changed at your origin."

If you've been treating "should my site be agent-ready?" as a someday problem, a top-tier infrastructure company just moved the deadline. Here's what actually shipped, how it works, and — the part the launch post doesn't spell out — what it still leaves on your plate.

What Cloudflare actually shipped

It's a developer preview under Browser Run → Agent Readiness. Flip it on and two things happen in front of your origin, neither of which touches your code:

Edge injection. Cloudflare uses HTMLRewriter to add one line to your HTML responses — a <script type="module" src="/.webmcp/bridge.js"> reference — on the way out. Static site or SPA, same behavior.