Cloudflare launches developer preview of WebMCP for websites
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Cloudflare announced a developer preview of WebMCP on 6 August 2026. According to Cloudflare, the new browser standard ships experimentally in Chrome 146 and appears in pages as document.modelContext. The system lets websites expose tools to visitor agents, allowing agents to interact with pages without scraping content. Cloudflare states that its implementation injects a small reference to a bridge script at the edge using HTMLRewriter when switched on in the Cloudflare Dashboard. The bridge script registers tool packs specified in a data-packs attribute. Cloudflare reports that the setup requires no code changes at the origin and works for both static and single-page applications.
Tool packs and browser execution
The developer preview includes two tool packs that run entirely inside the visitor browser: Content Credentials and the Site MCP Server pack. Cloudflare states that the Content Credentials pack fetches an image and parses content provenance metadata locally, including C2PA credentials via tools like scan_images_c2pa and inspect_image_c2pa. According to Cloudflare, inspect_image_c2pa decodes manifests such as edit history, stated author, and signing certificate, but currently reports signatureVerified: false because it does not cryptographically verify the data. The Site MCP Server pack connects directly to an MCP server endpoint from the page using the visitor session. Cloudflare notes that developers can access the feature by navigating to Agent Readiness, then Labs, in the Cloudflare Dashboard.
Sources
- Give any website a WebMCP interface — Cloudflare, 6 August 2026