e2e

Open source TypeScript testing framework that mixes agent steps written as plain-language goals with exact locators, caching agent actions to replay without model calls.

e2e: Early access, open to join. Get it at e2e.tester.army.

e2e is an open source TypeScript testing framework for developers who test web and mobile apps. Tests combine agent steps written as plain-language goals with precise locators and deterministic assertions. The framework remembers an agent's actions and replays them on later runs without calling the model again, cutting repeated reasoning and token costs. Developers choose their own model and gateway, define the agent's system prompt, and test web, iOS simulators and Android emulators through one API or bring their own engine. It runs in CI and offers migration guides for Playwright, Cypress, Selenium, Detox and Maestro.