HTTP 429 Too Many Requests

What it usually means

The target rate-limited our checks. Either the interval is too aggressive for this endpoint, or a shared rate limit is being hit by other traffic.

What to check first

• The check interval is reasonable for this endpoint (a login or search endpoint may need a longer one).
• The rate limit is shared with real traffic; allowlist the monitoring origin.
• A CDN rule that treats repeated requests from one address as abuse.

How ErrorDetector reports it

The target answered, so this is reported as a failed check, not downtime: the alert names the reason, the uptime percentage is untouched, and a recovery notice follows when the check passes again.

Caught by: httpkeywordapi monitors. Read about the api monitoring feature.