{"uid":"cap_r6AxPcgKAZ8rzKKuxbGyb","slug":"api-myceliasignal-com-8ad811a7","name":"MycелiaSignal ETH/USD VWAP Oracle","description":"Ethereum volume-weighted average price in USD for order execution and fair value — Ed25519 signed attestation","url":"https://api.myceliasignal.com/oracle/price/eth/usd/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":"ETHUSD/VWAP","pubkey":"f4f0e52b5f7b54831f965632bf1ebf72769beda4c4e3d36a593f7729ec812615","canonical":"v1|PRICE|ETHUSD|2004.06|USD|2|bitfinex,bitstamp,coinbase,gemini,kraken|vwap|1780030100|284762","signature":"0848d24d15562a6d9dd4bc6ed99c6800938221685ab03bed8679b423d16623f753423f6f4191f1a2f37d5cbcebb72e7bef2692197d6e0609e60de2147783940f","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_IAwWLgkjCY9DX_BuEfWMk","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 Volume-Weighted Average Price (VWAP) of ETH/USD as a cryptographically signed Ed25519 attestation","exampleAgentPrompt":"What's the current ETH/USD VWAP price? I need a cryptographically signed attestation I can verify — get me the Ed25519-signed oracle feed from MycелiaSignal.","exampleUseCases":[{"title":"Smart contract liquidation price verification","prompt":"I need to check if ETH has dropped below our liquidation threshold for a DeFi protocol. Pull the latest signed ETH/USD VWAP from MycелiaSignal so I can verify the price cryptographically before executing the liquidation transaction."},{"title":"Audit trail for trading execution","prompt":"We executed a large ETH purchase order yesterday and need to prove the fair value price we used for compliance. Fetch me the signed Ed25519 attestation for ETH/USD VWAP from that timestamp so we can include it in our audit report."},{"title":"On-chain oracle update with proof","prompt":"Our smart contract needs to update its internal ETH price feed with cryptographic proof attached. Get me the current volume-weighted ETH/USD price with the Ed25519 signature so I can bundle it into the transaction data as a verifiable oracle input."}],"resultDescription":"A JSON payload containing the current ETH/USD Volume-Weighted Average Price along with an Ed25519 cryptographic signature attesting to the data's authenticity, a timestamp, and the signed price data — suitable for use in smart contracts, audits, or any application requiring a verifiable price feed.","failureModes":["Payment required (402) if x402 payment header is missing or invalid","Stale or temporarily unavailable price data if upstream market feeds are disrupted","Invalid signature if response is tampered with in transit","Rate limiting if too many requests are made without proper payment","Network timeout if oracle computation takes too long"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically verifiable ETH/USD price with an Ed25519 signature — ideal for DeFi applications, smart contracts, or audit trails that require tamper-proof price attestations rather than a plain unsigned price feed. Prefer over generic price APIs when cryptographic proof of data integrity is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:42:16.628Z","isFirstParty":false}