Click stats for a freeq.one short link: total clicks and last-30-day daily counts. FREE for the link owner — pass the manage_secret returned at creation as link_secret. The paid call serves agents verifying a link they did not create (liveness/traffic check).
Without payment, the server returns 402 Payment Required with x402 challenge details.
A paying agent signs a USDC transaction on Base and retries with the payment header.