Checksum is an AI-native continuous testing platform for engineering teams shipping faster than manual QA can keep up. It generates, runs, and auto-heals end-to-end and API tests on every pull request, all as standard Playwright code in your own repo. When a test fails, Checksum tells you whether it found a real bug or a stale test, then fixes the false failures so your suite keeps pace with your coding agents.
👋 Hey Product Hunt, I'm Gal, founder and CEO of Checksum.
A few years ago at my last startup, I watched our team lose entire sprints to test maintenance. Every time the product changed, someone had to go update selectors, re-triage failures, and figure out which broken tests were real bugs and which were just noise. I'd spent years before that building ML models to detect suspicious activity from satellite data—pattern recognition at scale—and it nagged me that software testing was the same kind of problem.
AI coding tools solved generation and teams can now ship far more code than ever. But they didn't solve verification; every PR still needs to be tested and trusted before it ships. Counterpart, an agentic insurance platform, runs a 10x QA team on Checksum at less than half the cost of one offshore developer, and hasn't had a production outage since. Their engineering manager Ron Alexssen put it this way: "For less than half the salary cost of an offshore developer, I have the impact of a full QA team."
That’s why we built Checksum. Our agentic loop runs in two parts:
🔁 Generate and maintain. On every pull request, an agent spins up in a sandbox, detects what changed, and generates or updates your End-to-end and API tests automatically. No written selectors by hand.
🔁 Run, report, fix. Trigger your suite from a PR, the API, or MCP. When something fails, a second agent triages it: real bug, or broken test by a product change? Real bugs route to Jira, Linear, or Slack. Broken tests get fixed autonomously. Söderberg & Partners went from zero to full coverage in weeks and now reclaims 90 hours of manual testing a month. Postilize cut bugs by 70% and sped up engineering cycles by 30%, with zero flaky tests.
Everything ships as standard Playwright code committed to your own repo. No proprietary format, no lock-in. And the agent doesn't just chase easy passing tests, it goes after the hard cases too: auth boundaries, edge flows, the stuff that's tedious to test manually and easy for AI to skip if you let it.
🎁 Product Hunt community gets a free 30-day trial with code PHLAUNCH
We're here all day, ask us anything. 🙏
About Checksum AI on Product Hunt
“Your coding agent’s testing buddy”
Checksum AI launched on Product Hunt on August 20th, 2026 and earned 199 upvotes and 27 comments, earning #3 Product of the Day. Checksum is an AI-native continuous testing platform for engineering teams shipping faster than manual QA can keep up. It generates, runs, and auto-heals end-to-end and API tests on every pull request, all as standard Playwright code in your own repo. When a test fails, Checksum tells you whether it found a real bug or a stale test, then fixes the false failures so your suite keeps pace with your coding agents.
On the analytics side, Checksum AI competes within API, Developer Tools and Artificial Intelligence — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how Checksum AI performed against the three products that launched closest to it on the same day.
Who hunted Checksum AI?
Checksum AI was hunted by Ben Lang. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Ben Lang
👋 Hey Product Hunt, I'm Gal, founder and CEO of Checksum.
A few years ago at my last startup, I watched our team lose entire sprints to test maintenance. Every time the product changed, someone had to go update selectors, re-triage failures, and figure out which broken tests were real bugs and which were just noise. I'd spent years before that building ML models to detect suspicious activity from satellite data—pattern recognition at scale—and it nagged me that software testing was the same kind of problem.
AI coding tools solved generation and teams can now ship far more code than ever. But they didn't solve verification; every PR still needs to be tested and trusted before it ships. Counterpart, an agentic insurance platform, runs a 10x QA team on Checksum at less than half the cost of one offshore developer, and hasn't had a production outage since. Their engineering manager Ron Alexssen put it this way: "For less than half the salary cost of an offshore developer, I have the impact of a full QA team."
That’s why we built Checksum. Our agentic loop runs in two parts:
🔁 Generate and maintain. On every pull request, an agent spins up in a sandbox, detects what changed, and generates or updates your End-to-end and API tests automatically. No written selectors by hand.
🔁 Run, report, fix. Trigger your suite from a PR, the API, or MCP. When something fails, a second agent triages it: real bug, or broken test by a product change? Real bugs route to Jira, Linear, or Slack. Broken tests get fixed autonomously. Söderberg & Partners went from zero to full coverage in weeks and now reclaims 90 hours of manual testing a month. Postilize cut bugs by 70% and sped up engineering cycles by 30%, with zero flaky tests.
Everything ships as standard Playwright code committed to your own repo. No proprietary format, no lock-in. And the agent doesn't just chase easy passing tests, it goes after the hard cases too: auth boundaries, edge flows, the stuff that's tedious to test manually and easy for AI to skip if you let it.
🎁 Product Hunt community gets a free 30-day trial with code PHLAUNCH
We're here all day, ask us anything. 🙏