{"slug":"futures-basis-and-perp-premium-fc623e8a","name":"Futures Basis and Perp Premium","summary":"Futures basis and term structure of one coin: dated futures on Bybit, Deribit, Kraken, Gate and OKX with days to expiry, basis vs index and annualised basis (contango or backwardation, the carry), the perp premium (mark vs index/oracle) on Hyperliquid, dYdX, Bitfinex and the others, and predicted funding. Crypto futures basis for BTC, ETH and more. Data only. Bad input is free; under 2 venues not charged.","status":"live","indexable":true,"listed_since":"2026-10-25T17:51:23.033161Z","sources":[{"source":"x402_bazaar","external_id":"https://derivs.duoleads.com/v1/basis","owner_address":"0xcd673f7e1dad254347aeab6be0defe8b9c6b3a39","seen_at":"2026-10-26T22:03:25.664865Z","removed_at":null}],"endpoints":[{"url":"https://derivs.duoleads.com/v1/basis","host":"derivs.duoleads.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T06:29:04.899238Z","last_ok_at":"2026-10-26T06:29:04.899238Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"derivs-duoleads-com-d21f432e","name":"derivs.duoleads.com"}],"payment_options":[{"endpoint_url":"https://derivs.duoleads.com/v1/basis","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"3000","pay_to":"0xcd673f7e1dad254347aeab6be0defe8b9c6b3a39","observed_at":"2026-10-26T06:29:04.899238Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":3,"last_paid_at":"2026-10-24T15:08:39.521Z","reported_at":"2026-10-26T22:03:25.664865Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 8 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 0 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-26T14:51:25.330165Z"},"identity":{"endpoint_domains":["duoleads.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}