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Each API key can make up to 120 requests a minute. That’s plenty for normal use — it’s just there so one key can’t overwhelm things. Every response tells you where you stand, with these headers:
  • X-RateLimit-Limit — how many requests you get per minute.
  • X-RateLimit-Remaining — how many you have left right now.
  • X-RateLimit-Reset — when the count resets, as a Unix timestamp.

If you go over

You’ll get a 429 response with a Retry-After header telling you how many seconds to wait:
Wait that long, then try again. Here’s a small helper that does the waiting for you:
The easiest way to avoid 429s in the first place is to watch X-RateLimit-Remaining and spread big jobs out instead of firing everything at once.