Checksum
An autonomous background testing agent that runs in CI/CD and automatically generates and repairs Playwright end-to-end tests.
About Checksum
Checksum is a background testing agent that works autonomously, rather than a copilot that needs repeated prompting. Give it a task, such as generating 20 or 200 tests, and it completes the work independently, returning finished results. Checksum runs continuously in CI/CD on every commit, every PR, and every deployment, catching issues before they reach production. When application evolution, selector changes, or flow changes break tests, Checksum repairs them automatically, keeping the suite green without manual maintenance. It delivers tests to your repository as standard Playwright code, owned by your team, and can handle complex applications with thousands of endpoints and millions of test variants, generating 200 tests in 24 hours.
Best for
Best use cases
Batch-generate end-to-end tests, such as 200 tests within 24 hours
Run tests automatically on every commit, every PR, or every deployment
Automatically repair tests after application changes cause failures, keeping the suite green
Verify the behavior of cross-system API call chains (available in the Enterprise plan)
Features
Autonomous test generation
Works independently as a background agent: set a goal to generate 20 or 200 tests, and it returns finished results without back-and-forth prompting.
Automatic test repair
Automatically repairs broken tests when selectors change, flows change, or timing issues occur, keeping the suite green without manual maintenance.
Continuous CI/CD execution
Runs continuously on every commit, every PR, and every deployment, finding issues while changes are fresh instead of after production.
API testing
Finds endpoint relationships, traces cross-system calls, and verifies correct system behavior rather than only a 200 OK response; available in the Enterprise plan.
Pros
- Background agent completes tasks independently without repeated prompting or waiting for responses
- Automatically repairs broken tests, so the test suite needs no manual maintenance
- Generates tests far faster than people; 200 tests can be completed in 24 hours
- Tests are delivered as standard Playwright code and owned by your team