{"uid":"cap_9lXXjN7ABN1FR8kmyILbg","slug":"market-intelligence-api-defi-vs-tradfi-yield-spread-5df43294","name":"Market Intelligence API – DeFi vs TradFi Yield Spread","description":"DeFi lending rates vs Treasury yields: USDC supply and borrow APR on Aave v3 across five chains, read on chain, against the 3-month T-bill, with the spread and what it says about on-chain leverage demand. Use to compare DeFi and TradFi dollar yields.","url":"https://api.marketintelligenceapi.com/api/v1/rates/defi-spread?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"description":"Example JSON response returned by this endpoint"}},"additionalProperties":true}},"additionalProperties":false},"responseSchema":{"type":"json","example":{"signal":"TREASURY_PREMIUM","markets":[{"chain":"base","protocol":"aave_v3","supplyAprPercent":3.97,"spreadVs3mBillBps":-27,"variableBorrowAprPercent":4.89}],"averageSpreadBps":-92,"treasury3mPercent":4.24,"averageUsdcSupplyAprPercent":3.32}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_W2QNykpHEuPx2Xcr3kGfc","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 USDC supply and borrow APRs on Aave v3 across five chains alongside the 3-month T-bill rate, computing the spread in basis points and interpreting on-chain leverage demand.","exampleAgentPrompt":"What's the current USDC supply APR on Aave v3 across chains, and how does it compare to the 3-month T-bill — is DeFi yield in a premium or discount right now?","exampleUseCases":[{"title":"DeFi vs Treasury yield decision","prompt":"Should I park my USDC on Aave v3 or just buy T-bills? Pull the current supply APR across all chains and tell me the spread versus the 3-month T-bill rate."},{"title":"On-chain leverage demand monitoring","prompt":"What does the Aave v3 borrow APR spread versus Treasuries say about on-chain leverage demand right now — is borrowing pressure elevated?"},{"title":"Best chain for USDC lending","prompt":"Which chain on Aave v3 is currently offering the highest USDC supply APR relative to the 3-month T-bill, and what's the spread there?"}],"resultDescription":"A JSON object containing the 3-month T-bill rate, a per-chain breakdown of USDC supply and variable borrow APRs on Aave v3, the spread in basis points versus the T-bill for each chain, an average spread across all chains, and a named signal (e.g. TREASURY_PREMIUM) summarizing what the spread implies about on-chain leverage demand.","failureModes":["On-chain RPC unavailability may cause missing or stale chain data","T-bill rate data source outage could return null for treasury3mPercent","Rate limiting or payment failure (x402) returns 402 Payment Required","Unexpected Aave v3 contract changes could cause incorrect APR readings","Network timeout for slow chains may result in partial market data"],"whenToPreferThis":"Choose this endpoint when you need a real-time, cross-chain comparison of DeFi stablecoin yields against the risk-free rate, with an interpreted macro signal about on-chain leverage demand — rather than just raw Aave rates in isolation or a single-chain view.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T06:44:42.673Z","isFirstParty":false,"canonicalSlug":"market-intelligence-api-defi-vs-tradfi-yield-spread-5df43294"}