{"uid":"cap_9wgDeyP5mQmKN6Fyyzz0C","slug":"myc-iasignal-btc-usd-spot-futures-basis-carry-oracle-b8d3be53","name":"MycелiaSignal BTC/USD Spot-Futures Basis & Carry Oracle","description":"BTC/USD spot-futures basis and annualized carry across 5 exchanges — Ed25519 signed attestation","url":"https://api.myceliasignal.com/oracle/basis/btc/usd","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{}}},"response":{"pair":"btc/usd","pubkey":"7ab07fbe7d08cd16823e5eb0db0e21f3f38e9366d5fd00d14e95df0fb9b51a1a","regime":"BACKWARDATION","canonical":"v1|BASIS|BTCUSD|-0.020022|-0.28|BACKWARDATION|10|1781933221|3238","exchanges":[{"exchange":"binance","basis_pct":-0.050867,"mark_price":63685.3461087,"index_price":63717.7576087,"open_interest":97774.51,"funding_rate_pct":0.002643,"open_interest_usd":6226803510,"annualized_carry_pct":2.89},{"exchange":"bybit","basis_pct":-0.047979,"mark_price":63684.28,"index_price":63714.85,"open_interest":54072.872,"funding_rate_pct":-0.000473,"open_interest_usd":3443591921,"annualized_carry_pct":-0.52},{"exchange":"okx","basis_pct":-0.048967,"mark_price":63685.4,"index_price":63716.6,"open_interest":3029087.0800000154,"funding_rate_pct":-0.000704,"open_interest_usd":1929086223,"annualized_carry_pct":-0.77},{"exchange":"deribit","basis_pct":-0.014436,"mark_price":63650.98,"index_price":63660.17,"open_interest":1026448870,"funding_rate_pct":-0.000362,"open_interest_usd":1026448870,"annualized_carry_pct":-0.4},{"exchange":"hyperliquid","basis_pct":-0.043945,"mark_price":63688,"index_price":63716,"open_interest":30317.6535,"funding_rate_pct":0.01,"open_interest_usd":1930870716,"annualized_carry_pct":10.95},{"exchange":"dydx","basis_pct":0,"mark_price":63680.62307,"index_price":63680.62307,"open_interest":418.7904,"funding_rate_pct":-0.000144,"open_interest_usd":26668834,"annualized_carry_pct":-0.16},{"exchange":"kraken","basis_pct":-0.008156,"mark_price":63650.38812830335,"index_price":63655.58,"open_interest":1849.8758,"funding_rate_pct":-0.011978,"open_interest_usd":117745313,"annualized_carry_pct":-13.12},{"exchange":"coinbase","basis_pct":-0.025607,"mark_price":63638.9,"index_price":63655.2,"open_interest":2839.4259,"funding_rate_pct":-0.0064,"open_interest_usd":180697941,"annualized_carry_pct":-7.01},{"exchange":"crypto_com","basis_pct":0,"mark_price":63663,"index_price":63663,"open_interest":6126.8113,"funding_rate_pct":0.000377,"open_interest_usd":390051188,"annualized_carry_pct":0.41},{"exchange":"bullish","basis_pct":0,"mark_price":63681.4841,"index_price":63681.4841,"open_interest":777.74445364,"funding_rate_pct":0.0921,"open_interest_usd":0,"annualized_carry_pct":100.85}],"signature":"72ff12cceae2bfc46563e4b67f0f9bfe7028b4257c1cd8ada4f10ddabeace30edbdee381eb9e090c6a3955e72b92aa30c0b0bffab887c8d9fdbe82a41465b405","source_count":10,"signingScheme":"ed25519","timestamp_utc":"2026-06-20T05:27:01.084047+00:00","median_basis_pct":-0.020022,"median_carry_pct":-0.28}},"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NqvZvgASYwkk3NJpV1h54","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the BTC/USD spot-futures basis and annualized carry rate aggregated across 5 exchanges, delivered as an Ed25519-signed attestation.","exampleAgentPrompt":"What's the current BTC/USD spot-futures basis and annualized carry right now, aggregated across multiple exchanges, with a signed attestation I can verify?","exampleUseCases":null,"resultDescription":"Returns the BTC/USD spot-futures basis (the price difference between spot and futures), the annualized carry rate expressed as a percentage, and data aggregated from 5 exchanges — all wrapped in an Ed25519-signed attestation for cryptographic verifiability.","failureModes":["Exchange data unavailable — one or more underlying exchanges unreachable, partial or no data returned","Payment not processed — x402 payment required, 402 response if payment header missing or invalid","Signature verification failure — Ed25519 attestation cannot be verified if key is stale","Rate limiting — too many requests in a short window","Stale data — if market feeds lag, basis figures may be slightly delayed"],"whenToPreferThis":"Use this endpoint when you need a cryptographically attested, multi-exchange aggregated BTC/USD basis and carry figure — especially in DeFi, on-chain protocols, or any context where trust-minimized proof of the data is required. Prefer this over single-exchange REST feeds when you need signed provenance or cross-exchange consensus on the carry rate.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:48:20.790Z","isFirstParty":false}