Why use 429 Detector?
Some APIs only reveal rate limits under sustained use. This helper sends patterned traffic to detect when responses flip to 429 Too Many Requests so you can tune client backoff and cache hotter paths.
Practical tips
- Respect vendor acceptable use policies; prefer dedicated sandboxes.
- Capture Retry-After headers when present to model realistic waits.
- Compare with Rate Limit Tester for more configurable burst shapes.
Common questions
- Is this a DDoS tool?
- No. It is for engineering diagnostics at modest volumes on endpoints you control or are authorized to test.
- Why never see 429?
- Limits may be per API key, IP, or account. Confirm you are exercising the same dimension vendors enforce.