What is Checksum?
Checksum is an AI testing service for engineering and QA teams that automates test generation, execution, and maintenance. Checksum combines specialized end-to-end and API agents with a managed delivery model that includes final verification by a human engineer. The service focuses on keeping test coverage current as applications change.
Checksum delivers end-to-end tests as standard Playwright code rather than a proprietary test format. Customers retain the tests in their own repositories and can run, modify, or keep them after leaving the service. Checksum positions this automation as support for QA teams, not a replacement for exploratory testing or quality strategy.
What Checksum can do
Checksum supports continuous testing through agents that generate new tests, run existing tests, and repair failures caused by application changes. Checksum connects test maintenance with production feedback by monitoring errors and turning bugs into tests. API coverage goes beyond checking response status codes to verify behavior across connected endpoints.
- Checksum generates production-ready Playwright end-to-end tests.
- Checksum creates API tests spanning multiple endpoints.
- Checksum detects selector changes and application flow changes.
- Checksum opens pull requests containing test repairs.
- Checksum monitors production errors to create tests for bugs.
- Checksum fills gaps in existing test coverage.
How Checksum works
Checksum connects to an existing CI pipeline and works with current testing frameworks rather than requiring a replacement setup. The onboarding process includes scoping application flows, generating tests, and delivering those tests as pull requests. Checksum then runs continuously in the background, generating, executing, and healing tests without repeated prompts.
Checksum makes test changes reviewable through pull requests. When a selector changes or a flow shifts, Checksum detects the failure, fixes the test, and opens a proposed change for approval or rejection. Teams can begin by reviewing all tests and adjust the scope as they gain experience with the results.
Who Checksum is for
Checksum serves engineering teams, QA teams, and quality enablement teams that need automated coverage without taking on all test maintenance themselves. Checksum supports teams building their first test suite as well as teams expanding existing coverage. QA staff can use the time released from test upkeep for exploratory testing, edge cases, and quality strategy.
- Checksum helps teams build an initial end-to-end test suite.
- Checksum maintains regression coverage as products evolve.
- Checksum supports testing workflows across multiple API endpoints.
- Checksum helps teams extend coverage alongside an existing suite.
Checksum pricing and plans
Checksum charges by the number of tests or workflows actively maintained, rather than by seats or test runs. Checksum lists unlimited users, test runs, and auto-healings, and offers a free 30-day trial. The service uses contact-based pricing; monetary subscription amounts are not published in the supplied pricing text.
Checksum offers Emerging with 50 maintained E2E workflows, Scaling with 200, and Enterprise with 400+ and custom volumes. Every plan includes autonomous healing, dedicated engineering support, and CI/CD-ready delivery. Scaling adds custom style guides and parallel execution support. Enterprise adds the API testing agent, custom SLA support, and security review support.
Checksum strengths and limitations
Checksum combines managed test maintenance with customer ownership of standard Playwright code. Reviewable repairs give teams control over changes, while workflow-based billing avoids charges tied to individual users or executions. Checksum also works alongside existing tests, allowing teams to extend coverage without discarding their current suite. Plan selection still affects capacity and available capabilities.
- Checksum ties maintained workflow capacity to the selected plan.
- Checksum lists the API testing agent in Enterprise.
- Checksum lists parallel execution support and custom style guides from Scaling onward.
Checksum FAQ
What is Checksum?
Checksum is an AI testing service that generates, runs, and maintains automated tests for engineering and QA teams. Checksum provides Playwright end-to-end tests, API testing, automatic healing, and CI integration, with test code delivered to the customer's repository.
Is Checksum free?
Checksum offers a free 30-day trial for its paid plans. Checksum prices ongoing service by the number of maintained tests or workflows, not by seats or test runs. Subscription amounts require contacting Checksum.
Do customers own the tests Checksum creates?
Checksum delivers standard Playwright tests to the customer's repository through pull requests, and customers retain ownership. Customers can run the tests anywhere, modify the code, and keep the entire test suite if they stop using Checksum.
How does Checksum auto-healing work?
Checksum detects failures caused by changed selectors or application flows, repairs the affected test, and opens a pull request for review. Teams can inspect the change and approve or reject the repair. Checksum states that about 70% of failures resolve through this process without human involvement.
Can Checksum work with an existing test suite?
Checksum works alongside existing tests and connects to existing CI pipelines and current frameworks. Checksum fills coverage gaps, keeps existing tests working, and generates new tests as the product changes, rather than requiring teams to replace their current suite.
Does Checksum replace a QA team?
Checksum does not replace a QA team. Checksum automates test writing and maintenance so QA teams can spend less time repairing tests and more time on exploratory testing, edge cases, and quality strategy.
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