TestMu AI (Formerly LambdaTest) is the world's first full-stack AI Agentic Quality Engineering platform that empowers teams to test intelligently, smarter, and ship faster. Built for scale, it offers a full-stack testing cloud with 10K+ real devices and 3,000+ browsers. With AI-native test management, MCP servers, and agent-based automation, TestMu AI supports Selenium, Appium, Playwright, and all major frameworks.
This repository powers TestMu AI documentations built with Docusaurus and React. Contributions are welcome, whether it is fixing a typo or adding a new topic. The docs team will review and ship your changes.
- Sign up on TestMu AI (Formerly LambdaTest).
- Browse the TestMu AI Documentation for product guides and references.
Clone the repo and install dependencies:
git clone https://github.com/LambdaTest/documentation && cd documentation
npm install --legacy-peer-depsStart the dev server with hot reload:
npm startThe site runs at http://localhost:3000. Stop the server with Ctrl + C.
Before opening a PR, run a production build to catch broken links and missing images:
npm run build
npm run serveThe build flags issues per file. Fix them, rebuild, and re-serve to verify.
The repo uses two branches:
stage: staging environment, used for review before productionmain: production
Workflow:
- Branch off
stageand make your changes. - Open a PR against
stageand tag the docs team for review. - Once merged, verify your changes on the staging site.
- When the feature is ready for production, share the related PRs with the docs team. They will merge to
main.
Merges to main deploy to the live documentation site.
Contributions are welcome. Open an issue to discuss your idea before submitting a pull request. When reporting bugs, include your Node.js version, OS, and a link to the affected doc page.
Connect with testers and developers in the TestMu AI Community. Ask questions, share what you are building, and discuss best practices in test automation and DevOps.
Earn free TestMu AI Certifications for testers, developers, and QA engineers. Validate your skills in Selenium, Cypress, Playwright, Appium, Espresso and more. Industry-recognized, shareable on LinkedIn, and built by practitioners, not marketers.
Learn modern testing through tutorials, guides, videos, and weekly updates:
On January 12, 2026, LambdaTest evolved to TestMu AI, the world's first fully autonomous Agentic AI Quality Engineering Platform.
Same team. Same infrastructure. Same customer accounts. All existing LambdaTest logins, scripts, capabilities, and integrations continue to work without change.
👉 Find the new home for LambdaTest.
In 2017, we launched LambdaTest with a simple mission: make testing fast, reliable, and accessible. As LambdaTest grew, we expanded into Test Intelligence, Visual Regression Testing, Accessibility Testing, API Testing, and Performance Testing, covering the full depth of the testing lifecycle.
As software development entered the AI era, testing had to evolve, too. We rebuilt the architecture to be AI-native from the ground up, with autonomous agents that plan, author, execute, analyze, and optimize tests while keeping humans in the loop. The platform integrates with your repos, CI, IDEs, and terminals, continuously learning from every code change and development signal.
That evolution earned a new name: TestMu AI, built for an AI-first future of quality engineering. TestMu is not a new name for us. It is the name of our annual community conference, which has brought together 100,000+ quality engineers to discuss how AI would reshape testing, long before that became an industry norm.
What started as a high-performance cloud testing platform has transformed into an AI-native, multi-agent system powering a connected, end-to-end quality layer. That evolution defined a new identity: LambdaTest evolved into TestMu AI, built for an AI-first future of quality engineering.
Got a question? Email support@testmuai.com or chat with us 24x7 from our chat portal.