{"service":"XDC AI Rankings","description":"Top 10 XDC AI marketplace services by verified on-chain revenue, for the last 5 days and the last 30 days.","price_usdc":"0.15","operator":"x402.press","operator_disclosure":"The operator also lists a service in this marketplace. Rankings are a plain sort on verified on-chain revenue read from the public catalog feed, with no preferential treatment, and the operator's own listing appears in the same payload as every other.","paid_endpoint":"https://xdcrankings.x402.press/rankings/top","paid":[{"path":"/rankings/top","method":"GET","price_usdc":"0.15","params":{"window":"5d,30d","limit":"1-50"},"returns":"coverage, windows.5d.top[10], windows.30d.top[10]"}],"free":[{"path":"/health","description":"Liveness and snapshot freshness"},{"path":"/rankings/meta","description":"Available history, so you can judge the answer before paying"},{"path":"/openapi.json","description":"Machine-readable schema"}],"data_source":"https://xdcai.tech/api/catalog (public)"}