{"id":"d04bb3a1-4616-4994-8f66-c8bc2dfc6bed","shortId":"737uaF","kind":"x402","title":"APY decomposition, sustainability scoring, and wash trading detection for DeFi yield opportunities.","tagline":"APY decomposition, sustainability scoring, and wash trading detection for DeFi yield opportunities.","description":"The yield-analysis endpoint is part of DeFi Shield, a suite of 69 paid API endpoints providing security intelligence to autonomous AI agents. This specific endpoint performs APY decomposition, sustainability scoring, and wash trading detection on DeFi yield opportunities. It is accessed via POST at `/api/defi/yield-analysis` and costs $0.75 per call, paid in USDC on Base via the x402 protocol.\n\nDeFi Shield is designed for agent-to-agent commerce: an AI agent sends a POST request with an x402 payment header containing a USDC payment token, the x402 facilitator verifies the payment on Base, the endpoint processes the request and returns JSON, and payment settles only on a successful response. Every endpoint also supports a free GET request for discovery purposes, returning metadata and an `llm_usage_prompt` to help agents understand how to call it.\n\nThe broader DeFi Shield platform spans 11 categories including DeFi Intelligence, Wallet Intelligence, Protocol Intelligence, MEV & Trading, NFT Intelligence, Cross-Chain analysis, Safety & Compliance, Developer Security, Agent-to-Agent Trust, Data Infrastructure, and Real-Time Monitoring. Pricing ranges from $0.01 to $2.50 per call across the 69 endpoints. Discovery is available via `/.well-known/agent-card.json` and `/api/health` for full endpoint listing and pricing.","tags":[],"capabilities":["yield-analysis","apy-decomposition","sustainability-scoring","wash-trading-detection","x402-payment","usdc-base-settlement","defi-intelligence","agent-to-agent-commerce"],"categories":["defi","security"],"synonyms":["yield farming analysis","APY breakdown","DeFi yield scoring","yield sustainability","wash trade detection","farming risk assessment","yield decomposition API","DeFi yield intelligence"],"warnings":["No OpenAPI or JSON schema available for request or response bodies","No dedicated docs page found (returns 404)","Example request and response fields are inferred from the landing page quick-start; actual parameters may differ","x402 challenge object was empty — no payment details (amount, token, network) were captured in the probe"],"endpointUrl":"https://defi-shield-hazel.vercel.app/api/defi/yield-analysis","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","amount":"750000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live (402 challenge confirmed) and the landing page provides clear pricing and a general description of capabilities, but there is no OpenAPI schema, no detailed request/response documentation, and no example responses. The request body schema and response format are inferred from the landing page quick-start 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'/api/defi/yield-analysis':71 '/api/health':220 '0.01':205 '0.75':74 '11':169 '2.50':207 '69':38,212 'APY breakdown' 'DeFi yield intelligence' 'DeFi yield scoring' 'access':67 'across':210 'agent':48,92,94,98,157,191,193 'agent-to-ag':91,190 'agent-to-agent-commerce' 'ai':47,97 'also':139 'analysi':28,185 'api':1,13,40,53 'apy-decomposition' 'autonom':46 'avail':216 'base':81,120 'broader':164 'call':76,161,209 'categori':170 'chain':184 'commerc':95 'complianc':187 'contain':108 'cost':73 'cross':183 'cross-chain':182 'data':195 'decomposit':2,14,54 'defi':10,22,33,62,86,165,172 'defi-intelligence' 'design':89 'detect':8,20,60 'develop':188 'discoveri':146,214 'endpoint':29,41,51,122,138,213,223 'everi':137 'facilit':115 'farming risk assessment' 'free':142 'full':222 'get':143 'header':107 'help':156 'includ':171 'infrastructur':196 'intellig':44,173,175,177,181 'json':128 'list':224 'llm':152 'metadata':149 'mev':178 'monitor':201 'nft':180 'opportun':12,24,64 'paid':39,77 'part':31 'payment':106,111,118,130 'per':75,208 'perform':52 'platform':167 'post':69,101 'price':202,226 'process':123 'prompt':154 'protocol':85,176 'provid':42 'purpos':147 'rang':203 'real':199 'real-tim':198 'request':102,125,144 'respons':136 'return':127,148 'safeti':186 'score':4,16,56 'secur':43,189 'send':99 'settl':131 'shield':34,87,166 'span':168 'specif':50 'success':135 'suit':36 'support':140 'sustain':3,15,55 'sustainability-scoring' 'time':200 'token':112 'trade':7,19,59,179 'trust':194 'understand':158 'usag':153 'usdc':79,110 'usdc-base-settlement' 'verifi':116 'via':68,82,217 'wallet':174 'wash':6,18,58 'wash trade detection' 'wash-trading-detection' 'x402':84,105,114 'x402-payment' 'yield':11,23,27,63 'yield decomposition API' 'yield farming analysis' 'yield sustainability' 'yield-analysi':26 'yield-analysis'","prices":[{"id":"7c3717e3-4cb9-4c2d-8728-c7ff1c0fe878","listingId":"d04bb3a1-4616-4994-8f66-c8bc2dfc6bed","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","amount":"750000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:40.987Z"}],"sources":[{"listingId":"d04bb3a1-4616-4994-8f66-c8bc2dfc6bed","source":"x402_bazaar","sourceId":"https://defi-shield-hazel.vercel.app/api/defi/yield-analysis","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:40.987Z","lastSeenAt":"2026-04-22T05:32:33.864Z"}],"details":{"listingId":"d04bb3a1-4616-4994-8f66-c8bc2dfc6bed","quickStartSnippet":"# Free discovery (GET)\ncurl https://defi-shield-hazel.vercel.app/api/defi/yield-analysis\n\n# Paid request (POST, requires x402 payment)\ncurl -X POST https://defi-shield-hazel.vercel.app/api/defi/yield-analysis \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{\"address\": \"0x...\"}'","exampleRequest":{"address":"0x1234567890abcdef1234567890abcdef12345678"},"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Yield-analysis endpoint costs $0.75 per call and performs APY decomposition, sustainability scoring, wash trading detection","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"DeFi Shield has 69 paid API endpoints across 11 categories, priced $0.01–$2.50, paid in USDC on Base via x402","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Every endpoint supports free GET for discovery with llm_usage_prompt","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Discovery available at /.well-known/agent-card.json and /api/health","source_url":"https://defi-shield-hazel.vercel.app"}],"useCases":["AI agents evaluating yield farming opportunities before committing funds","Automated portfolio managers assessing sustainability of advertised APYs","Risk scoring pipelines flagging yield sources with wash trading indicators","DeFi aggregators comparing yield quality across protocols","Agent-based due diligence on new liquidity mining programs"],"bestFor":["Autonomous AI agents needing programmatic yield risk assessment","DeFi portfolio automation requiring APY sustainability checks","Security-focused workflows screening yield opportunities for wash trading"],"notFor":["Manual human-driven yield farming research (no UI provided)","Real-time trading execution or order placement","Non-DeFi yield analysis (e.g., traditional finance fixed income)"],"kindDetails":{},"updatedAt":"2026-04-22T02:48:59.849Z"}}