Cofactor runs your regression suite in the pipeline you already have. If something breaks, the pull request shows the failing step and a video before anyone merges it.
It’s too slow or too flaky to block a merge, so it runs overnight. By the time anyone looks, the bug is already in main.
By the time a bug is found, the person who wrote the change has moved on. Someone else has to work out what caused it.
Anything the suite misses before release gets found by your users.
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.
You hear about a bug while the change is still fresh in someone’s mind.
Add one command and an API token to whichever CI you use. It returns an exit code you can block merges on.
Cofactor leaves one comment on the pull request and keeps it up to date. It shows the failing step and a video of it.
Every bug is filed in Jira, Linear or Azure DevOps with a prompt your coding agent can pick up.
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.
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