Rate limits
Each API client may make 120 requests per minute. Every response says where you stand (IETF RateLimit headers):
RateLimit-Policy: "per-client";q=120;w=60
RateLimit: "per-client";r=117;t=42
r is what is left in this window, t the seconds until it resets. Over the limit you get 429 rate_limited with Retry-After: wait that many seconds. Need more for a bulk import? Ask your AutoUncle contact.