Oskar, Szymon, Piotr launch TesterArmy, a YC P26 agentic testing platform that runs end‑to‑end checks before deployment and in production. Engineers give tests in plain English; an AI agent handles navigation, authentication, and verification. The service eliminates manual scripts and static test suites, aiming to give teams instant confidence in core flows.

The founders cite persistent pain in E2E testing—slow setup, costly maintenance, and fragile auth handling as the catalyst. By integrating with GitHub Actions, Vercel, and Slack, the platform schedules runs, triggers on pull requests, and streams alerts to Slack or Discord. Teams report that 30+ have adopted the tool daily.

Early adopters credit the agent for catching a timezone bug in a booking flow, a sandbox loading regression, miscounted checkout totals, and an AI‑chat data retrieval failure. Each issue surfaced before reaching production, stopping potential revenue loss and user frustration.

TesterArmy eschews SDKs and test code in favor of a cloud‑hosted browser that mimics human interaction. This model lowers onboarding time, reduces flakiness, and shifts focus from selector maintenance to product shipping. The service offers a free trial and claims no sales calls or long onboarding.