Cloudflare Radar adds WebMCP support for browser-based agents

Cloudflare's Radar changelog entry for 2026-08-07 announced two features. Radar Researcher is a beta assistant for querying Radar's Internet trend data in plain language. The second is the MCP-relevant one: Radar now supports WebMCP, which the entry says allows "browser-based AI agents to navigate Radar, search data, and use tools such as URL scanning and domain lookup."

WebMCP, the Web Model Context Protocol, is a browser API that lets a web page expose its own functionality as typed tools for AI agents running in or alongside the browser. It shares MCP's name and tool model while living on a separate governance track: the specification is a Draft Community Group Report from the W3C Web Machine Learning Community Group, dated 28 July 2026, and is explicitly not a W3C Standard. The upstream project describes protocols like MCP as "backend integrations" between agent platforms and services, and positions WebMCP as the client-side counterpart: tools are defined in page script, and an agent invoking them shares the page's state and the user's session instead of talking to a separate server.

Cloudflare's Browser Run documentation places WebMCP availability in Chrome beta, and walks through listing a page's tools with navigator.modelContextTesting.listTools() from DevTools in a lab session. On Radar, the practical effect is that an agent driving a browser can call Radar's scanning and lookup functions directly rather than clicking through the interface.