One protected API response consumes one decision credit. Every plan has a hard cap per 31-day access cycle — nothing is sold as "unlimited", because an unbounded allowance at a fixed price cannot be costed.
Published so the tiers can be compared directly. Larger plans are strictly cheaper per decision.
A wallet-funded agent does not need an account. When the payment rail is operational, call any
paid endpoint without a key and the response is HTTP 402 with an x402 v2 challenge in the PAYMENT-REQUIRED
header. Settle it, retry with a PAYMENT-SIGNATURE header, and the response is
returned. This is metered per call, not per month.
Subscriptions settle in USDC on Base (native ETH is accepted against a quote frozen when your purchase intent is created). You sign the quote before paying, the payment is verified against a credentialed RPC with three block confirmations, and the key is issued atomically — a transaction hash can be redeemed exactly once. Keys are stored only as a SHA-256 digest. Paid subscribers can rotate a lost key by signing a recovery challenge with the purchasing wallet; free keys are not recoverable.
Billing questions, refunds and cancellation are covered by the Terms of Service.