nth Labs Help centre
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nth Labs help centre

nth Labs is the testing team for people who build with AI. Paste your link and press the button. A real browser uses your product the way a stranger would, and the findings are sorted into three departments: IT for what is broken, Marketing for who would use it, and Finance for what it is worth.

The console’s home for Acme Notes, our sample app: “11 findings affect customers.” First on the list: “‘Subscribe’ on Page not found did nothing when submitted”.

Start here

Your first runSign up, paste your link, press the button and read what came back. Plans and billingWhat is free on every plan, what a plan adds, and how fair use works. A tour of the consoleEvery screen in the console, and what each one is for.

What you can do with nth Labs

Find what is brokenIT opens your product in a real browser and files what breaks for customers, with the evidence. See who would use itMarketing seats a panel of simulated people and says who would pay, who left, and why. Know what it is worthFinance estimates what each fix is worth from where people stop, and shows the range. Fix it with your coding toolEvery finding comes with a prompt to paste into Claude Code, Cursor or Codex. Keep it fixedThe next run checks that a fix held, and a confirmed bug becomes a standing check. Work from your editorClaude, Codex and Cursor call it as tools, and a browser confirms each fix.

Where it runs

nth Labs runs in the hosted console at console.nthlabs.dev, so there is nothing to install. Sign in to see your projects, runs and findings.

Page text and screenshots of the product under test are sent to the AI providers we use to read them, which the privacy page lists. The free checks send nothing to any of them. You can also run nth Labs from the command line, in your CI and from coding agents.