Welcome to Cofactor
Start here to verify your product works the way your users expect, from local to staging to production.
01In one sentence
Cofactor drives your real product like a user, verifies code changes with video evidence, and self-heals tests.
02What is Cofactor?
Cofactor is an AI-era QA platform that verifies your product works the way your users expect, from local to deploy. Code now lands faster than any hand-written test suite can keep up; Cofactor closes that gap by driving a real browser alongside your AI coding tools, turning every session into a deterministic trace, and keeping the suite green as your UI shifts.
03Start here
New to Cofactor? These get you from zero to a green check fast.
- Quickstart — run your first test locally in a couple of minutes.
- Concepts — the handful of ideas (Properties, flows, traces) the rest of the docs build on.
- Glossary — quick definitions when a term is new.
04How Cofactor shows up
Cofactor meets your team where they are. No need to learn a complicated tool.
- Pairs locally via CLI. The agent drives a live browser from inside Claude or Cursor — clicking, typing, asserting — and records the run as a deterministic trace you can commit.
- Natural language. Anyone can chat with the Cofactor agent to build a test from natural language, or by dropping in tickets, PRD's or specs.
- Chrome Extension. Click through your application and our Chrome Extension will automatically build a flexible, self-healing flow.
05Go deeper
- Designing a good test — what makes a flow durable instead of brittle.
- Running your tests — on demand, from your terminal, and wired into CI.
06Connect your tools
Cofactor plugs into the tools you already ship with — pulling tickets, posting results, and authoring coverage where your team already works.