{"slug":"402-com-tr-api-x402-perp-funding-25ce44","title":"Choosing between spot and a perp?","host":"402.com.tr","method":"GET","resource":"https://402.com.tr/api/x402/perp-funding","category":"market","description":"Choosing between spot and a perp? This is the data that choice needs. Aggregate OI-weighted perpetual funding, open interest and basis for a coin across venues (CoinGecko, no key): who pays whom (longs crowded vs shorts crowded), the carry you earn or bleed holding the perp, and contango vs backward","price_listed":0.04,"price_asked":null,"state":"no_terms","state_label":"Answers HTTP 429 without x402 payment terms","checks_7d":1,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","pathParams":{},"queryParams":{"symbol":"BTC"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object"},"queryParams":{"properties":{"symbol":{"description":"Coin symbol (BTC, ETH, SOL…)","type":"string"}},"required":["symbol"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-10","reachable":true,"status":429,"valid_402":false,"asked_usdc":null,"price_match":null,"latency_ms":331,"error":null}],"description_full":"Choosing between spot and a perp? This is the data that choice needs. Aggregate OI-weighted perpetual funding, open interest and basis for a coin across venues (CoinGecko, no key): who pays whom (longs crowded vs shorts crowded), the carry you earn or bleed holding the perp, and contango vs backwardation. Verdict neutral / elevated / extreme. Pass symbol=BTC. Funding annualised as an estimate (8h intervals assumed). A market-structure signal, not a price call. Not financial advice.","last_updated":"2026-10-10T08:57:52.51Z","schemes":["exact"]}