Agentic testing platform for web and mobile apps. Test your app with AI agents. Creators of e2e. Backed by @ycombinator.
San Francisco, CA
Joined February 2026
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e2e just passed 10,000 GitHub stars, and @kacperkapusciak is going live to show how to use it.
From npx e2e init to results on every pull request and run one test on web, iOS and Android. Then it's open Q&A.
Thu, Oct 22 · 9 AM PT · 12 PM ET · 6 PM CEST
Save a seat:
tester.army/e2e/sessions/int…
Intro to e2e: agentic end-to-end testing, live xitter.cf/i/broadcasts/1lJQRWbBe…
TesterArmy (YC P26) retweeted
Going live tomorrow to show how I use e2e day to day
We'll go through the setup, replaying verified agent steps without the model, and running it on GitHub Actions CI
Then open Q&A, so bring your questions!
📅 Thu, Oct 22 · 9 AM PT / 6 PM CEST tester.army/e2e/sessions/int…
TesterArmy (YC P26) retweeted
Payments are notoriously difficult to end-to-end test
iframes inside of iframes, iframe for every field… hell on earth for developers
but not for agents! define e2e tests in plain english and agents take care of the rest
~/ npx e2e init
TesterArmy (YC P26) retweeted
One of the most powerful features of agentic e2e are *personas*
Your agent larps as an architect in Lyon who only speaks French or pharmacist in Cairo who only reads Arabic
Great for catching missing i18n or broken RTL and you still write tests in English
TesterArmy (YC P26) retweeted
e2e 0.21.2 is out ✨
- @lightpanda_io support for faster test execution
- @testmuai device provider package
- Performance & reliability improvements
try it now: ~/ npx e2e init
TesterArmy (YC P26) retweeted
In e2e, you can use one model to run `agent.act`s, and a different one to answer `agent.assert`ions
That way you can use faster model for navigating your app and smarter model for checking if the app actually works according to your spec
TesterArmy (YC P26) retweeted
How to get started with e2e by @TesterArmy just in 4 minutes
Bookmark it so you can watch it later
TesterArmy (YC P26) retweeted
Introducing /migrate-to-e2e
Allow your agent to migrate your existing end-to-end test suite to agentic e2e one slice at a time.
~/ npx skills add tester-army/e2e --skill migrate-to-e2e
TesterArmy (YC P26) retweeted
Who's testing the code your agents write? @SzymonRybczak of @TesterArmy explains AI testing for web and mobile apps, including test plans built around each pull request.
Our agentic testing framework, e2e, on iOS and Android is powered by @agent_device.
We teamed up with @callstackio to explain how it all works under the hood.
e2e by @TesterArmy runs mobile tests through our open-source @agent_device. Combine goal-based agent actions with exact assertions, then replay cached actions without inference on cache hits.
Read how it works on iOS and Android 📖 clstk.com/4i1onKP
e2e has already been downloaded more than 350,000 times from npm
~/ npx e2e init
tester.army/e2e
TesterArmy (YC P26) retweeted
Shoutout to @TesterArmy, if your apps UI is supposed to actually WORK, go fkn use tester army.
Basically lets ai emulate users testing your app
I’m not fkn paid I just love when ppl solve actual problems well and their team has been really helpful
Go watch the explainer video
this is a pretty good explanation you can watch: youtu.be/NEawZb6Hssw?is=EOw2…
happy to answer any questions
TesterArmy (YC P26) retweeted
e2e by @TesterArmy explained visually
You write tests as agent goals in plain English and AI agents run them using screenshots, view hierarchy and agent tools one step at a time.
Then the agent's actions are recorded, so next runs are replayed with no model call and only hands back to the agent if the screen has changed.
