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Lark

Test every surface, every minute.

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Lark is an end-to-end testing platform for UI, API, CLI, and mobile tests that run on a continuous cadence. Tests are written in natural language rather than code, and they self-heal when the product changes, adapting to dashboard revisions or new API endpoints instead of breaking. The platform is built by ex-Stripe engineers.

Lark's agents can test UIs, APIs, SDKs, and async workflows. It offers native integrations with GitHub Actions, GitLab CI, and other CI tools, plus first-class support for coding agents such as Claude Code, Cursor, and Codex. When a test fails, alerts are sent via Slack, email, or PagerDuty with detailed logs and screenshots, and CI integration can prevent PRs from merging if tests fail. Reproducible test scripts, logs, screenshots, and videos are available as downloadable debugging artifacts.

Lark is aimed at engineering teams maintaining dashboards, API endpoints, and related surfaces. The pages describe account creation and demo options but do not specify plan tiers, trials, or pricing structure.

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