WebMCP Inspector

Lists the WebMCP tools a page registers, shows their schemas, and calls them, on iPhone and iPad, where no other browser offers extensions at all. WebMCP lets a site expose structured tools to AI agents through navigator.modelContext, imperatively via registerTool() or declaratively via toolname and tooldescription attributes. Safari does not implement the API, so registration silently no-ops and nothing can find those tools. WebMCP Inspector supplies the interface before the page's own scripts run and reads back what the page registers. • Tool names, descriptions, input schemas and annotations • Live updates via ontoolchange, including subframes and post-load registration • Both the imperative and declarative APIs, with schemas derived from form fields • Argument forms generated from JSON Schema, with the result or error shown inline TURNING IT ON Safari extensions are off until you enable them. In Safari, tap the Aa button at the left of the address bar, choose Manage Extensions, and switch on WebMCP Inspector. Then tap Aa again, pick WebMCP Inspector, and allow it on the site you want to inspect. Reload any page that was already open: an extension can only read a page that loaded after it was allowed. The app itself explains this on first launch. Works on shipping Safari with no flags and no experimental build. Chrome requires a flag on desktop and has no iOS extensions whatsoever. No data is collected, stored or transmitted. Everything it reads stays on the page you are looking at.