Why Prufa exists: QA built for the agentic era
AI writes 10× more code than humans can validate. The QA gap isn't a missing test suite — it's surface area. Here's the architecture we bet on.
AI writes 10× more code than humans can validate. The QA gap isn’t a missing test suite — it’s that the surface area to verify grows faster than anyone can click through. The fix isn’t more clicking. It’s an engineer who never stops checking.
That’s the bet behind Prufa: an AI QA engineer for web products, built to run real user flows — signup, login, checkout — in a real browser, around the clock.
Can you trust an LLM to test your site?
Only if it isn’t the one keeping score. The first question everyone asks about AI-driven QA is the right one: language models are persuasive, and a persuasive tester that’s wrong is worse than no tester at all.
So Prufa is built on one architectural rule: the AI navigates, plain code verifies.
- The AI navigates your site like a user — loads pages, fills forms, clicks through. It explores; it doesn’t judge.
- Plain code verifies what actually happened — captured network traffic, console output, response codes. Deterministic checks: same input, same verdict.
- Findings come in two clearly separated tiers: verified (machine-checked, with evidence) and advisory (the AI’s opinion, labeled as such — never phrased as broken).
A finding like “the invite form returns a 500” is backed by the actual response code, not a model’s impression of the page. And when something can’t be machine-verified — say, a cookie banner whose consent state isn’t readable — Prufa says exactly that, as an observation, not a verdict.
Two kinds of user, one product
The other thing the agentic era changes: the user running the QA tool is often not a human. If your AI ships code, your AI should also verify it.
So Prufa ships two first-class surfaces against the same product: a dashboard, reports, and alerts for humans — and a CLI, HTTP API, MCP server, and agent skill for the agents. No human action without an agent-callable equivalent, and no agent primitive without a human-visible counterpart.
Where to start
The free audit is step one: paste a URL, get machine-verified findings in about a minute, no signup. Monitoring is the product: you stop checking, Prufa doesn’t.