AgentReady WebMCP Tester

Test a site's WebMCP tools in a chat with Claude. Large text made for demos. Your API key stays encrypted with a passcode.

See how an AI agent uses your website. AgentReady WebMCP Tester opens a side panel next to any page. You ask Claude to do something on the site, and Claude can use only what an AI agent gets: the site's WebMCP tools and the text on the page. You see each step as it happens. WHAT YOU SEE • The tools a site gives agents, in plain words: names, descriptions, and what each tool asks for. Each tool is labeled "Read only" or "Can change things". • Three suggested requests, written from the site's own tools. • Each step the AI takes. Open a step to see what the AI sent and what the site sent back, as readable fields. The exact data is one click away. • A copy of the whole chat as plain text, to share with your team. MADE FOR DEMOS • Large text by default, with A− and A+ buttons up to 24 px, so a room can read it on a shared screen. • Light and dark themes. SAFE BY DEFAULT • Your Claude API key is encrypted with a passcode that you choose (AES-GCM), and it is saved only in your browser. You type the passcode once each time Chrome starts. • The extension connects only to Anthropic's API. It has no servers of its own and no analytics. • When a site's tool can change something, such as a booking, the AI asks you before it runs the tool. CLAUDE MODELS Choose Claude Sonnet 5.5, Claude Opus 5.5, or Claude Haiku 5.5. You use your own Anthropic API key, and Anthropic bills your account for each request. BEFORE YOU START 1. Turn on "WebMCP for testing" at chrome://flags/#enable-webmcp-testing, then relaunch Chrome. 2. Get a Claude API key at console.anthropic.com. 3. Click the AgentReady icon, add your key, and choose a passcode. Without the WebMCP flag, the AI can only read the page. Made by AgentReady (agentready.co).