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To keep responses fast for everyone, Specter enforces a per‑API‑key rate limit of 15 requests per second. If you exceed this limit, the request is rejected with HTTP 429 (Too Many Requests).

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Example

If you send 16 requests within 0.5 seconds, the 16th request will be rate‑limited. You’ll need to wait about 0.5 seconds (until the one‑second window resets) before sending another request.

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Response headers

Every query response includes the following headers so you can monitor and throttle your usage:
  • X-RateLimit-Limit – Max number of requests allowed per second for your key
  • X-RateLimit-Remaining – Requests left in the current second
  • X-RateLimit-Reset – Seconds (decimal) until the limit resets