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Cofactor automatically tests for regressions across all of your surfaces, so you know you're good to go.
Hand it what you have. Give Cofactor your docs, your tickets or just your app. It turns them into a regression suite that runs on a schedule or in CI.
You only hear about real bugs. Cofactor runs the tests, fixes them when your UI changes, and checks that a failure isn’t just a flaky environment before it tells you. Every report includes a video.
Regression tests don't catch everything. Cofactor also explores your app every day, trying the unusual things real users do, and finds edge cases before your customers hit them.
Know if the house is on fire. You get one short summary in Slack, Teams or email that tells you whether to drop everything or look at it later.
Made for agents. Every bug is filed in Jira, Linear or Azure DevOps with a prompt your coding agent can pick up and fix.
Applying an expired promo code at checkout shows the success banner and leaves the order total unchanged, so the cart and the total disagree. The customer can place the order at the undiscounted price while the page says the code was applied.
SPRING24, expired 2026-06-30.Fix ENG-2214 in the storefront checkout. When a promo code has expired, applyPromo() returns { ok: false, reason: 'expired' }, but PromoBanner still renders the success state and OrderSummary does not recalculate the total. The cart and the total disagree. Reproduce from the recorded trace: cofactor test-suite steps checkout-promo 8f21c4 Make the banner reflect the rejection and keep the total authoritative. Cofactor re-runs the Checkout suite on your PR and comments the result.
It runs your suite on every pull request, fuzzes your app every night, and files bugs your coding agent can pick up. You only hear from it when something changes.
“As an engineering leader, you're constantly weighing coverage against velocity. Cofactor is one of the few tools that's genuinely given us both. It's been a force multiplier for the team.”
“Cofactor has changed how we approach testing. We used to rely heavily on manual QA to ensure our product was ready for enterprise customers, but now we rely on Cofactor.”
“Cofactor is the future of E2E testing with AI.”