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Show HN: Reverse-engineer any site's API from inside the browser

rtrvr.ai
5 pointsarjunchint1 comment
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Every website is just a wrapper around an API: GraphQL mutations, JSON endpoints, paginated XHR. The data layer is cleaner than anything you'd get from DOM parsing.

The hard part of raw HTTP scraping was always (1) finding the endpoints and (2) recreating auth. Your browser already has both. We built Vibe Hacking to let the agent use them.

The agent navigates the page, captures network activity, and generates scripts that replay those API calls at scale. Auth propagates automatically because it runs from inside the page.

We tested it on X, it pulled 2,000+ followed profiles despite the UI capping at 50.

DOM-native, no vision/screenshots, #1 on Halluminate WebBench (81.39%). Chrome extension, Gemini Flash Lite default (500 free req/day). Two ex-Google engineers, bootstrapped, 25K+ users.

Happy to answer questions on architecture or limitations.

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