--- title: "Web app testing that doesn't break when your UI changes." description: "Agentic AI software testing for web apps: Momentic agents write, run and repair end-to-end tests from the CLI, MCP server or cloud on each pull request." canonical: "https://momentic.ai/web-app-testing" last-updated: "2026-09-13T12:56:02-07:00" --- # Web app testing that doesn't break when your UI changes. URL: https://momentic.ai/web-app-testing platform / web-app-testing Describe the behavior you want to check in plain English. Momentic turns it into an end-to-end test, runs it in a real browser, and updates it when your UI changes. No selectors to maintain. [Try for free](https://app.momentic.ai/signup) [Get a demo](/sales) Works with Chromium · Google Chrome · Chrome for Testing ## Web app testing built for enterprise scale. 117,010 bugs caught before deploy 100% Production deploys verified 20x Less test flakiness < 1s Cached step replay 8.9M+ Steps auto-healed ## How web automation testing works. From an empty repo to a passing browser test, without standing up another test framework. 01 ### Install Momentic One command. Installs the CLI, initializes the project, points it at your app, and runs a sample browser test. 02 ### Author tests in plain English Describe what the user does and what should happen next. Momentic turns that into browser actions and saves the test as YAML next to your code. It adds no XPath, no CSS paths, and no test IDs to your app. 03 ### Run locally or in CI Same command on your laptop and in CI. Wire it to pull requests, nightly regression runs, and release gates. ## Web test automation features. Plain-English authoring, real browsers, self-healing locators, and a CLI that runs the same way on your laptop and in CI. ### Natural-language web test authoring Write tests in plain English. Momentic turns each line into an executable browser step anyone can read. Cursor, Claude Code, and Codex can author, run, and debug those tests through MCP. Engineers and coding agents write the tests. ### Visual and multimodal assertions Assert on what the user sees: color, layout, image content, and position on screen, next to the usual element and text checks. Assertions on the rendered screen. ### Self-healing web tests Momentic re-resolves targets that move, waits for page, DOM, network, and navigation signals, and caches the path that worked. Over 99% of steps replay from that cache, 52ms slower than Playwright in our benchmark. You pay the AI cost once, not on every run. UI refactors don't break your test suite. ### Real browser test execution Tests drive Chromium, Google Chrome, or Chrome for Testing, on your machine or on hosted browsers. Real rendering, real network, real cookies. The browser your users have, not a jsdom shim. ### Parallel testing and CI/CD execution Run the suite from the CLI, shard it across CI jobs, and gate pull requests and deployments on the result. Get feedback while the change is still fresh. ### Network and API request mocking Intercept requests, return fixed data, override feature flags, or force a 500 so you can test the states a live backend won't give you on demand. Test the edge cases before your users find them. Trusted by teams that ship every day. Engineering teams use Momentic to retire manual regression passes, cut flaky-test maintenance, and catch regressions on the pull request. “Momentic gave us a fast and reliable way to validate Poe.com's AI responses, even when they weren't deterministic.” Momoko F. Head of Product Operations, Quora 30 min daily test execution, down from 7 hours 500+ manual test cases replaced 100% critical tests created in one month [30 min daily test execution, down from 7 hours "Momentic gave us a fast and reliable way to validate Poe.com's AI responses, even when they weren't deterministic." Momoko F. Head of Product Operations, Quora](/customers/quora) [8x increase in release cadence "It's like giving someone your QA checklist and watching them execute it for you!" Sriram S. Engineering Lead, Source Control, Retool](/customers/retool) [80% faster release cycles "With Momentic, we've caught bugs that would have eluded even our most diligent internal tests." Alex C. CTO, GPTZero](/customers/gptzero) [6x faster end-to-end test creation "We've already seen a 30% decrease in production incidents thanks to Momentic's automated testing." Hanna K. Head of QA, CoverGo](/customers/covergo) [85% reduction in production incidents "Momentic gives us reliable end-to-end coverage, so we can focus on features instead of maintaining tests." Alec H. Staff AI Engineer, Mutiny](/customers/mutiny) [Browse all](/customers) ## Available across every platform. Same authoring model. Same APIs. Same test files. [01 Android Native Android, React Native, Expo, and Flutter apps on local or remote emulators.](/android-testing)[02 iOS Native Swift and cross-platform iOS builds on local or hosted simulators.](/ios-testing)[03 Agentic AI agents that author, run, repair, and maintain tests as the product changes.](/agentic-testing) ## Web app testing, answered. What is web app testing? Checking that a browser app still works for the people using it: sign-in, forms, navigation, checkout, and the API calls behind them, end to end in a real browser. What is automated web application testing? The same browser steps run by software instead of by a person. It pays off on regression suites, on pull-request checks, and on the release checklist somebody currently clicks through by hand. How does Momentic automate web app testing? You describe the behavior in plain English. Momentic reads the page, performs the interactions, checks the result, and caches the path that worked so the next run is fast and repeatable. Do I need to write XPath or CSS selectors? No. Describe the element or the interaction in plain English, and Momentic resolves it from the page as rendered. How does Momentic reduce flaky web tests? Momentic combines intent-based targeting, auto-healing, and smart waiting. It re-resolves targets, waits for page, DOM, network, and navigation activity to settle, and recovers from transient interruptions such as a marketing popup. Which browsers does Momentic support? Momentic supports Chromium, Google Chrome, and Chrome for Testing. Tests run on your machine or CI runner, and hosted Chrome runs on Momentic infrastructure with unlimited concurrency. The [documentation](https://docs.momentic.ai) lists the current browsers. Can Momentic run web tests in CI/CD? Yes. The same CLI command runs locally and in CI, so you can gate pull requests, run nightly regression, and check a deployment. Can Momentic run tests in parallel? Yes. Tests execute in parallel to shorten feedback time as the suite grows. Hosted browsers remove the local machine limit, so concurrency is not bound by your runner's CPU. Can Momentic mock APIs and network requests? Yes. Momentic intercepts requests and returns responses you define, so you can use fixed data, override a feature flag, or force a 500 that a live backend will not give you on demand. Can coding agents create Momentic web tests? Yes. Cursor, Claude Code, and Codex create, edit, run, and debug tests through the Momentic MCP server, from inside your editor. How is Momentic different from Playwright, Selenium, or Cypress? Traditional frameworks define tests in code and selectors, so every UI change costs maintenance. Momentic authors tests in natural language and self-heals when an element moves. The [Playwright](/comparison/momentic-vs-playwright) and [Selenium](/comparison/momentic-vs-selenium) comparisons go feature by feature. Is Momentic a no-code platform? No. Momentic is built for engineers and coding agents. Steps are plain English, tests are YAML in your repository, and the CLI runs them in CI. The visual editor writes the same YAML; it is one way in, not the product itself. Still have additional questions? ## Close the feedback loop. Start for free, or book a demo and we'll run it against your app. [Try for free](https://app.momentic.ai/signup) [Get a demo](/sales)