This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Product upvotes vs the next 3
Waiting for data. Loading
Product comments vs the next 3
Waiting for data. Loading
Product upvote speed vs the next 3
Waiting for data. Loading
Product upvotes and comments
Waiting for data. Loading
Product vs the next 3
Loading
MaruCheck
Test what your AI didn't.
Open-source independent QA for AI-generated software. MaruCheck verifies whether AI-written code still matches what your product was actually supposed to do.
Hey Product Hunt 👋
I’m excited to launch MaruCheck today.
AI coding agents are getting incredibly good at writing software, but there’s a problem I kept running into:
The same AI that writes the implementation can also write the tests.
If it misunderstood the requirement in the first place, both the code and the tests can share the same mistake.
Everything turns green while the product is still wrong.
That’s why I built MaruCheck.
MaruCheck acts as an independent QA and verification layer for AI-generated software.
Instead of only asking, “Do the tests pass?”, it asks:
“Does this implementation still match what the product was actually supposed to do?”
Some of what MaruCheck currently includes:
→ Quality Contracts for defining intended product behavior
→ Git diff and change-impact analysis
→ Risk-based verification
→ Automated test orchestration
→ Semantic drift detection
→ QA Memory for previous bugs and regressions
→ MCP integration for AI coding agents
→ CLI workflows
→ GitHub / CI verification
→ Evidence-based release checks
One of my favorite parts is semantic drift protection.
If the approved requirement says:
Free users can upload 5 files.
and an AI-generated change silently changes that to 10, MaruCheck doesn’t just rewrite the test and move on.
It flags the change and asks whether the product behavior was intentionally changed.
The name MaruCheck is inspired by the Kobayashi Maru concept: testing what happens when things don’t go according to the expected happy path.
I’ve decided to make the project open source because I’d really like other developers to help shape it.
I’d love for you to:
⭐ Star the repository
🛠 Try MaruCheck on a real project
🐛 Report bugs
💡 Suggest features
🤝 Contribute code, integrations, tests, docs, or ideas
🔁 Share it with developers using AI coding tools
Website:
https://marucheck.dev
Core repository:
https://github.com/Kidus-M/MaruC...
Website repository:
https://github.com/Kidus-M/MaruC...
I’d especially love feedback from people building regularly with Codex, Claude Code, Cursor, Windsurf, and other coding agents.
The coding agent builds.
MaruCheck proves.
About MaruCheck on Product Hunt
“Test what your AI didn't.”
MaruCheck was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #40 on the daily leaderboard. Open-source independent QA for AI-generated software. MaruCheck verifies whether AI-written code still matches what your product was actually supposed to do.
On the analytics side, MaruCheck competes within Open Source, Developer Tools, Artificial Intelligence and GitHub — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how MaruCheck performed against the three products that launched closest to it on the same day.
Who hunted MaruCheck?
MaruCheck was hunted by Kidus Mesfin Teferi. 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.
For a complete overview of MaruCheck including community comment highlights and product details, visit the product overview.
Kidus Mesfin Teferi