{"slug":"api-delx-ai-api-v1-x402-binary-fair-price-107bba","title":"Map a true probability into a binary contract fair price in [0,1]","host":"api.delx.ai","method":"POST","resource":"https://api.delx.ai/api/v1/x402/binary-fair-price","category":"market","description":"Map a true probability into a binary contract fair price in [0,1]. Call when pricing yes/no markets from your probability model. Returns fair price in [0,1] as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. A","price_listed":0.001,"price_asked":0.001,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":1340,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"prob":0.37},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"body":{"additionalProperties":true,"properties":{"prob":{"description":"Input field: prob.","type":"number"}},"required":["prob"],"type":"object"},"bodyType":{"const":"json","type":"string"},"method":{"const":"POST","type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"additionalProperties":true,"description":"Bounded first-party JSON result; input is processed in memory and not retained.","properties":{"fair_price":{"type":"number"},"prob":{"type":"number"},"schema":{"type":"string"}},"type":"object"}},"required":["input","output"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.001,"price_match":true,"latency_ms":1340,"error":null}],"description_full":"Map a true probability into a binary contract fair price in [0,1]. Call when pricing yes/no markets from your probability model. Returns fair price in [0,1] as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.","last_updated":"2026-09-19T15:58:35.692Z","schemes":["exact"]}