Send a configurable burst of requests to a URL and watch how it responds. Useful for: validating your own rate limits, characterizing third-party API limits before integrating, finding the 429 threshold, and inspecting the Retry-After header your service sends back.
Use responsibly
Only test URLs you own, or third-party APIs whose terms permit load testing. Rate-limit testing other people's services without permission is hostile traffic. CORS will block requests to most third-party domains from this browser tool, which is a feature.