What it does
Checksum generates and maintains automated tests for software teams. It offers two agents: an end-to-end agent that writes Playwright tests and repairs them automatically when the application changes, and an API agent that the site says covers thousands of endpoints in days and checks that the system actually works rather than only returning status codes. The platform connects to your existing CI pipeline and runs on every commit. The site says it also monitors production errors so that each bug becomes a test. When a test breaks because a selector or user flow has changed, it fixes the test and opens a pull request for review; the site says about 70% of failures are resolved this way without human involvement. Tests are delivered as ordinary code that lives in your repository, so you can run and edit them anywhere. The site contrasts Checksum with coding agents by saying it works continuously in the background instead of on request, and says it works alongside an existing suite and does not replace a QA team. Pricing is described as results-as-a-service: it is based on the number of workflows Checksum maintains, with no per-seat or per-run fees, and it includes final verification by a human engineer. The site directs visitors to request a demo.
Capabilities
- Generates Playwright end-to-end tests
- API agent for testing many endpoints
- Automatic test healing through reviewable pull requests
- Runs in CI on every commit
- Tests delivered as code in your own repository
- Human engineer verification in the results-as-a-service plan
When to use it
- Your team ships quickly and lacks time to write and maintain end-to-end tests
- Your interface changes often and tests keep breaking
- You want API test coverage across many endpoints
- You want tests you own as Playwright code
