{"uid":"cap_yWl3m1l8_LU2t3vzYkcmy","slug":"api-myceliasignal-com-df3e3abf","name":"MyCeliaSignal BTC/EUR VWAP Oracle","description":"Bitcoin volume-weighted average price in EUR for European market execution — Ed25519 signed attestation","url":"https://api.myceliasignal.com/oracle/price/btc/eur/vwap","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":{"domain":"BTCEUR/VWAP","pubkey":"f4f0e52b5f7b54831f965632bf1ebf72769beda4c4e3d36a593f7729ec812615","canonical":"v1|PRICE|BTCEUR|63184.41|EUR|2|bankofcanada,bitfinex,bitstamp,cnb,coinbase,ecb,ecbdirect,gateio,gemini,kraken,norgesbank,okx|vwap|1780097583|335437","signature":"949f2616dbfbe05b27b38cef453a67ba58c9cc24bd9913be160db30c553b91be21a63a848cc9e58deed1773e4f60440779c4ecb565a5b3b825a549e94ecae80a","signingScheme":"ed25519"}},"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_mOEP9LllDacCky5s-8YiL","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 Bitcoin to Euro Volume-Weighted Average Price (VWAP) as a cryptographically signed Ed25519 attestation","exampleAgentPrompt":"What's the current VWAP price of Bitcoin in euros? I need a cryptographically signed attestation I can verify.","exampleUseCases":null,"resultDescription":"A JSON response containing the BTC/EUR VWAP price value along with an Ed25519 digital signature that cryptographically attests to the price data's authenticity and integrity, allowing downstream consumers to verify the data has not been tampered with.","failureModes":["Payment required (402) if x402 payment header is missing or invalid","Price feed temporarily unavailable due to upstream data source outage","Invalid or expired Ed25519 signature if service key rotation occurred","Rate limiting if too many requests are made in a short window","Network timeout if oracle aggregation takes longer than expected"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically verifiable BTC/EUR VWAP price with an Ed25519 signed attestation — ideal for smart contracts, DeFi protocols, or any application requiring tamper-proof price data. Prefer this over simple spot price feeds when auditability and non-repudiation of the price quote are required. Use when your application needs to verify price integrity on-chain or in a trust-minimized environment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:43:56.537Z","isFirstParty":false}