Rate limits & quotas

Plans

Plan	Price	Per minute	Per day	Per month
Free	$0	30	250	—
Build	$200/mo	300	—	100,000
Scale	custom	custom	—	custom

Terminal Pro subscribers get Build limits included with their subscription. Upgrade from the Developers page; Scale is set up with the team — sales@prometheus.finance. Limits are per account, not per key — minting more keys does not raise your ceiling. Windows are fixed and UTC-aligned (minute, day, calendar month), enforced atomically across all serving instances.

Headers

Every API-key response reports where you stand:

RateLimit-Limit: 30
RateLimit-Remaining: 27
RateLimit-Reset: 41
X-Quota-Limit: 100000        (quota-carrying plans)
X-Quota-Remaining: 98314
X-Quota-Reset: 2026-10-01T00:00:00.000Z

When you hit a limit

A 429 tells you which ceiling you hit and when to come back:

{ "error": "Too many requests. Slow down.", "code": "rate_limited", "retry_after_s": 41 }

{
  "error": "Monthly request quota exhausted.",
  "code": "quota_exceeded",
  "quota": 100000,
  "resets_at": "2026-10-01T00:00:00.000Z"
}

Honour Retry-After. Well-behaved clients back off exponentially and never retry a quota_exceeded before the reset instant.

Fetch whole objects, not lines: one /financials call returns the complete income statement, balance sheet and cash flow for up to 200 periods.

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Rate limits & quotas

Plans

Headers

When you hit a limit

​Plans

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​When you hit a limit

Plans

Headers

When you hit a limit