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Lark lets you ship every commit with confidence. Write tests in plain English, run them on every PR or deploy, and know in minutes if something broke.

Quickstart

Create your first workflow and run it from the dashboard or CI.

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Why Lark

Write tests in minutes. Skip writing e2e scripts and managing test infra. Lark handles it. Describe what you want to test and you’re done in under two minutes. Choose deterministic runs or fully AI-driven flows. Tests adapt as your product evolves. When you revamp your UI or change an API, tests don’t break on selectors or brittle code. Lark adapts and alerts you to the change instead. Test everything. Lark’s agents can test anything a human could: UIs, APIs, SDKs, and async workflows, all in one place. Catch bugs before your users do. Run tests on every commit, pull request, or deployment. Get instant alerts with detailed logs and screenshots when something fails.