{"uid":"cap_a_BpoMCSwWdRVKnZFrbTQ","slug":"api-myceliasignal-com-60e6a3d7","name":"MyceliaSignal USD/CNY Oracle","description":"USD/CNY forex exchange rate — US dollar to Chinese yuan — Ed25519 signed attestation","url":"https://api.myceliasignal.com/oracle/price/usd/cny","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":"USDCNY","pubkey":"f4f0e52b5f7b54831f965632bf1ebf72769beda4c4e3d36a593f7729ec812615","canonical":"v1|PRICE|USDCNY|3.42|CNY|2|frankfurter,norgesbank|median|1780029948|251771","signature":"7d74655c95ffc2c088b6e235f776e3154fe4fc98e2ea0add3afdc155b29c3dd480cc75cc11504f71446165e91de1789d765c37fab5d78e32a1f1c82da2628702","signingScheme":"ed25519"}},"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ICqQjKHMxacIwT5GXaxrK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a cryptographically signed (Ed25519) attestation of the current USD/CNY exchange rate","exampleAgentPrompt":"What's the current USD to CNY exchange rate? I need a cryptographically signed attestation I can verify — something with an Ed25519 signature from MyceliaSignal's oracle.","exampleUseCases":null,"resultDescription":"Returns an Ed25519 signed attestation object containing the current USD/CNY exchange rate, a timestamp, and a cryptographic signature that downstream consumers can verify to confirm data integrity and provenance.","failureModes":["Payment not provided or insufficient — x402 payment required error","Rate temporarily unavailable due to upstream data source outage","Invalid or expired Ed25519 signature in edge cases","Network timeout or service unavailability returning 5xx"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically attested, tamper-evident USD/CNY exchange rate — particularly for smart contract inputs, on-chain oracle feeds, or any workflow requiring verifiable data provenance. Prefer it over unsigned REST forex APIs when trust and auditability of the price data are critical.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:46:49.569Z","isFirstParty":false}