Open-source QA agent Sentinel reads your code before testing it
Hacker NewsJul 17, 2026 · 3h ago
Sentinel is an agent for testing web s. Unlike typical UI test that click through screen elements blindly, Sentinel first reads the 's code to understand its structure and behavior, then performs clicks and inputs that follow real user flows. It was introduced on Hacker News's 'Show HN' board, and its is publicly available so anyone can download, run, or modify it for their own project.
Key points
Sentinel is an QA agent for testing web apps.
It reads the 's code first to understand its structure before clicking through screens.
It was introduced via Hacker News's 'Show HN' board.
The is public, so it can be freely used and modified.