{"id":"8acc9dda-515b-4264-97b5-3eda54ede0b8","shortId":"esevQz","kind":"x402","title":"Side-by-side DeFi pool comparison: APY, TVL, and sustainability scoring via x402 on Base.","tagline":"Side-by-side DeFi pool comparison: APY, TVL, and sustainability scoring via x402 on Base.","description":"The `/api/defi/pool-compare` endpoint is part of DeFi Shield, a suite of 69 paid API endpoints providing security intelligence for autonomous AI agents. This specific endpoint performs side-by-side pool comparisons, returning data on APY, TVL, and sustainability metrics. It accepts POST requests and costs $0.50 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, the facilitator verifies the USDC payment on Base, and the endpoint returns JSON results. Payment settles only on a successful response. Each endpoint also supports free GET-based discovery that returns schema information and an `llm_usage_prompt` to help agents understand how to call it.\n\nThe platform offers discovery mechanisms including a health endpoint (`/api/health`) listing all endpoints and pricing, an analytics endpoint (`/api/analytics`), and an A2A discovery card at `/.well-known/agent-card.json`. No OpenAPI spec or detailed request/response schema was found during probing, so the exact input parameters and output format for pool-compare must be inferred or discovered via the free GET endpoint.","tags":[],"capabilities":["defi-pool-comparison","apy-analysis","tvl-comparison","sustainability-scoring","x402-payment","usdc-base-settlement","agent-to-agent-commerce","liquidity-pool-analytics"],"categories":["defi","finance","blockchain"],"synonyms":["pool compare","liquidity pool comparison","DeFi pool analysis","APY comparison","TVL comparison","yield comparison","pool sustainability","DeFi yield compare","LP comparison"],"warnings":["No OpenAPI or JSON schema available — request/response format is inferred, not documented","The x402 challenge object returned empty ({}) which may indicate incomplete payment metadata","No dedicated docs page found (404 at /docs)","Example request JSON is speculative based on endpoint name; actual required parameters unknown"],"endpointUrl":"https://defi-shield-hazel.vercel.app/api/defi/pool-compare","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","amount":"500000","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 ($0.50/call) and a high-level feature description. However, no OpenAPI spec, detailed docs, request/response schemas, or example responses were found. The request body format is inferred from analogous endpoints on the same 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'/api/analytics':178 '/api/defi/pool-compare':34 '/api/health':169 '0.50':79 '69':44 'APY comparison' 'DeFi pool analysis' 'DeFi yield compare' 'LP comparison' 'TVL comparison' 'a2a':181 'accept':74 'agent':54,97,99,103,154 'agent-to-ag':96 'agent-to-agent-commerce' 'ai':53,102 'also':136 'analyt':176 'api':8,24,46,68 'apy-analysis' 'autonom':52 'base':16,32,86,120,141 'call':81,158 'card':183 'commerc':100 'compar':208 'comparison':7,23,64 'cost':78 'data':66 'defi':5,21,39,91 'defi-pool-comparison' 'design':94 'detail':190 'discov':213 'discoveri':142,163,182 'endpoint':35,47,57,123,135,168,172,177,218 'exact':199 'facilit':114 'format':204 'found':194 'free':138,216 'get':140,217 'get-bas':139 'header':112 'health':167 'help':153 'includ':165 'infer':211 'inform':146 'input':200 'intellig':50 'json':125 'liquidity pool comparison' 'liquidity-pool-analytics' 'list':170 'llm':149 'mechan':164 'metric':72 'must':209 'offer':162 'openapi':187 'output':203 'paid':45,82 'paramet':201 'part':37 'payment':111,118,127 'per':80 'perform':58 'platform':161 'pool':6,22,63,207 'pool compare' 'pool sustainability' 'pool-compar':206 'post':75,106 'price':174 'probe':196 'prompt':151 'protocol':90 'provid':48 'request':76,107 'request/response':191 'respons':133 'result':126 'return':65,124,144 'schema':145,192 'score':12,28 'secur':49 'send':104 'settl':128 'shield':40,92 'side':2,4,18,20,60,62 'side-by-sid':1,17,59 'spec':188 'specif':56 'success':132 'suit':42 'support':137 'sustain':11,27,71 'sustainability-scoring' 'tvl':9,25,69 'tvl-comparison' 'understand':155 'usag':150 'usdc':84,117 'usdc-base-settlement' 'verifi':115 'via':13,29,87,214 'x402':14,30,89,110 'x402-payment' 'yield comparison'","prices":[{"id":"91b1acad-492c-40af-b205-c0499f3480b1","listingId":"8acc9dda-515b-4264-97b5-3eda54ede0b8","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":"500000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:41.018Z"}],"sources":[{"listingId":"8acc9dda-515b-4264-97b5-3eda54ede0b8","source":"x402_bazaar","sourceId":"https://defi-shield-hazel.vercel.app/api/defi/pool-compare","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:41.018Z","lastSeenAt":"2026-04-22T05:32:33.885Z"}],"details":{"listingId":"8acc9dda-515b-4264-97b5-3eda54ede0b8","quickStartSnippet":"# Free discovery (returns schema + llm_usage_prompt)\ncurl https://defi-shield-hazel.vercel.app/api/defi/pool-compare\n\n# Paid request (requires x402 payment header)\ncurl -X POST https://defi-shield-hazel.vercel.app/api/defi/pool-compare \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{\"pools\": [\"0xPoolA...\", \"0xPoolB...\"]}'","exampleRequest":{"pools":["0xPoolAddressA","0xPoolAddressB"]},"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Pool-compare endpoint costs $0.50 per call and provides side-by-side pool comparison: APY, TVL, sustainability","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"DeFi Shield has 69 paid API endpoints using x402 protocol with USDC on Base","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Payment settles only on successful response","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Each endpoint supports free GET-based discovery with llm_usage_prompt","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Endpoint returned HTTP 402 on POST probe confirming it is live","source_url":"https://defi-shield-hazel.vercel.app/api/defi/pool-compare"}],"useCases":["AI agents comparing DeFi liquidity pools before allocating capital","Automated yield farming strategies that need to evaluate pool sustainability","Portfolio management agents selecting optimal pools across protocols","Risk assessment workflows comparing TVL stability and APY decomposition across pools","Agent-driven dashboards surfacing the best risk-adjusted pool opportunities"],"bestFor":["Autonomous AI agents needing programmatic DeFi pool intelligence","Yield optimization bots comparing pools by APY and sustainability","DeFi risk analysis pipelines that evaluate multiple pools side-by-side"],"notFor":["Manual/human-only DeFi research without x402 payment infrastructure","Real-time trading execution — this is an analytics endpoint, not a DEX router","Non-EVM or non-DeFi use cases"],"kindDetails":{},"updatedAt":"2026-04-22T02:52:45.206Z"}}