429 — Too many requests (rate limit)

429 — Rate limit

You're sending too many calls per second/minute:

{ "error": { "type": "rate_limit_exceeded", "code": 429,
  "message": "Du har overskredet dit forbrugsloft. Prøv igen senere.",
  "details": { "retry_after_seconds": 2 } } }

How to handle it:

1. Read Retry-After (seconds) and wait that long.
2. Use exponential back-off on repeated 429s.
3. Watch X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset.

Limits per plan (per second / per minute):

• Hobby: 5/s · 300/min
• Basis: 25/s · 1,500/min
• Pro: 100/s · 6,000/min
• Enterprise: 300/s · 18,000/min

The limits apply per account — not per key. All your API keys and IP bindings share the same ceiling, so the numbers above are what applies no matter how many keys you create.

There is also an IP cap of 50 calls/second, and anonymous /dawa calls are limited to 1,000/day per IP.

Rate limit ≠ monthly quota. If your month is used up you get "You have used your monthly quota…" — see that article.