We Let Coasty QA Test Its Own Product. It Found 14 Bugs.
What happens when you ask an AI agent to QA test the product it runs on? We decided to find out. We pointed Coasty at coasty.ai and told it to find every bug it could.
The Setup
We gave Coasty access to a staging environment of its own product. The instruction was simple: test every user flow, document any issues, and report findings. No test scripts, no predefined paths, no hints about known issues.
Bugs Found
- ●A checkout flow that silently failed on certain payment methods
- ●An onboarding step that skipped validation on empty fields
- ●A mobile layout issue where buttons overlapped on smaller screens
- ●An API timeout that was not surfaced to the user
- ●A race condition in the chat message rendering
- ●Several accessibility issues with missing ARIA labels
Three of the 14 bugs were in production-critical flows that our human QA team had missed during the last release cycle.
How It Tested
Coasty systematically navigated every page, clicked every button, filled every form with valid and invalid data, tested edge cases like empty inputs and special characters, and checked responsive layouts across different viewport sizes. It documented each issue with screenshots, steps to reproduce, and expected vs. actual behavior.
AI-driven QA testing is not a replacement for human testers, but it is an incredibly effective first pass. Coasty found bugs in minutes that might have gone unnoticed for weeks.
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