Pricing

Prices are set in US dollars. Pay with USDC on Base (x402, no account), prepaid USD credit, or GRAM at the rate of the moment (+3%), locked for 15 minutes in the invoice.

What	Price	Free
one check (POST /v1/checks) beyond the free threshold	$0.01	100 a day per key or address
one signed statement of a record at a moment	$0.10	viewing a past state is free; the signed statement is paid
one monitor for 30 days beyond the free three	$1.00	3 per key or address

Prepaid credit

$50 → $50 of credit
$500 → $525 of credit
$5,000 → $5,500 of credit

Credit is spent in USD with no conversion. Companies: cards and invoices after the company is registered (January 2027); until then USDC or GRAM against an invoice.

GRAM now: $1.1800 (coingecko).

For machines: /v1/prices.