CheckAPI — API monitoring that catches silent failures, not just HTTP 200
Built this after hitting the same wall twice.
First: every free monitoring tool had "non-commercial use only" in the fine print.
As a solo dev building real products, I had to pay from day one just to watch my own APIs.
Second: even paid tools only check HTTP status codes. Your API returns 200 OK —
but the response body contains {"error": "db_connection_failed"} or returns null data.
Monitor says healthy. Users see broken product.
CheckAPI solves both.
Response body validation with Keyword, Regex, JSONPath assertions, and Header checks.
Live testers built into the dashboard. Heartbeat/Cron monitoring. 5 alert channels.
Public status pages. SLA reports.
10 monitors free. Commercial use allowed. Forever.
Still at $0 MRR, building in public. Honest feedback welcome.
Hey — interesting take on API monitoring.
Silent failures are actually a real pain point for dev teams, especially early-stage SaaS.
At this stage, tools like this usually need focused exposure in dev communities where people already feel the problem.
If you want, I can share a few ways similar tools usually get their first active users.