{"uid":"cap_mIevZfGLIDpBaoRftOH4q","slug":"myceliasignal-best-usdt-supply-yield-oracle-29b29dc0","name":"MyceliaSignal Best USDT Supply Yield Oracle","description":"Best USDT supply yield across all protocols and chains — Ed25519 signed attestation","url":"https://api.myceliasignal.com/oracle/defi/yield/best/usdt","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":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_AXlnhYndN5oMuAtgvI83E","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the best current USDT supply yield rate across all DeFi protocols and chains, delivered as an Ed25519 signed attestation","exampleAgentPrompt":"What's the best USDT supply yield available right now across all DeFi protocols and chains — and can you give me a signed attestation so I can trust the data?","exampleUseCases":null,"resultDescription":"Returns the best current USDT supply yield (APY), identifying the optimal DeFi protocol and chain, along with an Ed25519 cryptographically signed attestation confirming the data's authenticity and integrity at time of retrieval.","failureModes":["Service unavailable or timeout if upstream DeFi data sources are unreachable","Payment failure if the $0.05 USDC x402 payment is not properly submitted","Stale data if aggregated protocol sources have not updated recently","No yield data available if all protocols report zero or invalid rates","Rate limiting if too many requests are made in a short window"],"whenToPreferThis":"Choose this endpoint when you need a single authoritative, cryptographically verifiable answer for the best USDT supply yield across all major DeFi protocols and chains simultaneously, rather than querying individual protocol APIs one by one. Especially valuable when trust and verifiability of the yield data matters, as the Ed25519 signed attestation allows downstream consumers to verify the data has not been tampered with. Use over generic DeFi aggregators when you need a machine-readable signed result suitable for automated on-chain or agent-based decision making.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T13:07:11.877Z","isFirstParty":false}