{"uid":"cap_R3jgIm2VaIAz5xPxFzWqG","slug":"treasury-reality-verifiable-defi-yield-record-aave-v3-arbitrum-usdc-42711d5d","name":"Treasury Reality — Verifiable DeFi Yield Record: Aave V3 Arbitrum USDC (2026-09-28→2026-09-29)","description":"aave-v3-arbitrum-usdc: USDC supply APR, time-weighted over 2026-09-28→2026-09-29, signed. Cheaper than the agent turns you'd burn finding the contracts, decoding ray-scaled rates, sampling the series, and time-weighting it — you trust the math, not us. Verify it offline — schema, every published figure recomputed, and the secp256k1 signature — with no API call and no trust in us.","url":"https://treasury-reality-base.fly.dev/v1/artifacts/sha256:383f0499ae48c6dd6bdd87dcacfabedfee8e2192c4d65c4db4ab5d0984a25ad0?utm_source=zero.xyz","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":{"const":"http"},"method":{"const":"GET"}},"additionalProperties":false},"output":{"type":"object"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_oWXwTAfCEnr0cggks1we4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","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, time-weighted USDC supply APR record for Aave V3 on Arbitrum covering the 24-hour window 2026-09-28 to 2026-09-29, with an offline-verifiable secp256k1 signature.","exampleAgentPrompt":"Can you fetch me the cryptographically signed, time-weighted USDC supply APR on Aave V3 Arbitrum for the September 28 to September 29 2026 window — I need the verified artifact so I can check the signature offline?","exampleUseCases":[{"title":"DeFi yield audit trail for treasury","prompt":"I need a tamper-proof record of the USDC supply APR on Aave V3 Arbitrum for September 28 to 29 2026 — something with a cryptographic signature I can verify independently for our treasury audit."},{"title":"On-chain rate data for a structured product","prompt":"Pull the signed, time-weighted USDC APR from Aave V3 Arbitrum for the Sep 28–29 2026 period so we can use it as a reference rate in our DeFi structured product — I want the secp256k1 signature so we can attest the figure without calling your API again."},{"title":"Verifying DeFi yields without trusting a provider","prompt":"Get me the Aave V3 Arbitrum USDC supply APR artifact for Sep 28 to Sep 29 2026 — I want to recompute the time-weighted rate myself from the published data and check it against the signature, not just take someone's word for it."}],"resultDescription":"Returns a signed artifact containing the time-weighted USDC supply APR for Aave V3 on Arbitrum over the 2026-09-28 to 2026-09-29 window. The artifact includes the computed APR value, the date range, a SHA256 content hash, and a secp256k1 cryptographic signature. The schema and all figures can be recomputed and verified offline without any further API calls or trust in the provider.","failureModes":["Payment not received or x402 payment flow fails — endpoint returns 402 with payment requirements","Artifact hash mismatch — requested SHA256 not found, returns 404","Service temporarily unavailable on fly.dev infrastructure — returns 503","Rate or timeout errors if the Fly.dev deployment is cold-starting"],"whenToPreferThis":"Prefer this endpoint when you need a cryptographically attested, offline-verifiable DeFi yield figure for the specific Aave V3 Arbitrum USDC pair on the 2026-09-28 to 2026-09-29 window, and want to avoid the cost and complexity of fetching contracts, decoding ray-scaled rates, sampling the series, and computing the time-weighted average yourself. Ideal for audit, compliance, or trust-minimized financial workflows where independent verification of the math and signature matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:31:11.399Z","isFirstParty":false,"canonicalSlug":"treasury-reality-verifiable-defi-yield-record-aave-v3-arbitrum-usdc-42711d5d"}