{"id":"4b8ab8d3-4831-4315-a19e-a8fbd92806ec","shortId":"j9Vhyk","kind":"x402","title":"Aave TVL data via x402 micropayment on Base — $0.02 per request, no API key needed.","tagline":"Aave TVL data via x402 micropayment on Base — $0.02 per request, no API key needed.","description":"This endpoint provides Aave DeFi Total Value Locked (TVL) data through the x402 payment protocol. It is hosted at lowpaymentfee.com, a platform offering various pay-per-call APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories. All endpoints on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network.\n\nThe endpoint accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers include an X-PAYMENT header with a signed payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — access is instant once payment is attached to the request.\n\nThe platform advertises itself as a low-fee, permissionless API marketplace. Documentation and detailed response schemas are not publicly available beyond the landing page listing. The specific fields returned by the Aave TVL endpoint are not documented in the crawled material, so consumers should expect a JSON object with TVL-related metrics but should verify the exact schema by making a paid call.","tags":[],"capabilities":["defi-data","aave-tvl","x402-payment","usdc-base","pay-per-request","no-api-key","json-response"],"categories":["defi","finance","data"],"synonyms":["Aave total value locked","DeFi TVL API","Aave protocol stats","DeFi analytics","TVL data feed","crypto TVL","Aave metrics"],"warnings":["No response schema or example output documented","Documentation pages (docs, pricing, README) are empty/gated behind wallet connect","Exact fields returned by the Aave TVL endpoint are unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/aave/tvl","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/defi/aave/tvl","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live (402 challenge captured) with clear pricing and payment details, but there is no documented request/response schema, no example payloads, and the docs/pricing/README pages are all gated behind a wallet connect with no useful content. The specific data returned by this Aave TVL endpoint is 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'000':119 '20':118 '6':129 'Aave metrics' 'Aave protocol stats' 'Aave total value locked' 'DeFi TVL API' 'DeFi analytics' 'TVL data feed' 'aav':1,16,34,185 'aave-tvl' 'accept':91 'access':143 'across':60 'advertis':155 'ai/ml':63 'analyt':62 'api':13,28,59,134,163 'attach':149 'avail':173 'base':8,23,87,120 'beyond':174 'call':58,217 'caller':104 'categori':67 'commit':142 'consum':196 'crawl':193 'crypto TVL' 'data':3,18,40,61 'decim':130 'defi':35 'defi-data' 'detail':167 'document':165,190 'endpoint':32,69,90,187 'exact':211 'expect':198 'fee':161 'field':181 'finance/web3':64 'handl':99 'header':110 'host':48 'i.e':124 'includ':105 'infrastructur':66 'instant':145 'json':96,200 'json-response' 'key':14,29,135 'land':176 'limit':138 'list':178 'lock':38 'low':160 'low-fe':159 'lowpaymentfee.com':50 'make':214 'marketplac':164 'materi':194 'metric':206 'micropay':6,21 'model':77 'need':15,30 'network':88 'no-api-key' 'object':201 'offer':53 'page':177 'paid':216 'pay':56 'pay-per-cal':55 'pay-per-request' 'payment':44,97,109,114,147 'per':10,25,57,80 'permissionless':162 'platform':52,72,154 'post':92 'price':76 'protocol':45,103 'provid':33 'public':172 'rate':137 'relat':205 'request':11,26,81,93,152 'respons':168 'return':95,182 'schema':169,212 'settl':82 'share':73 'sign':113 'sinc':126 'specif':180 'subscript':141 'total':36 'tvl':2,17,39,186,204 'tvl-relat':203 'uniform':75 'unit':121 'usdc':84,123,127 'usdc-base' 'use':128 'valu':37 'various':54 'verifi':209 'via':4,19,100 'x':108 'x-payment':107 'x402':5,20,43,102 'x402-payment'","prices":[{"id":"b555796c-5d62-4f40-921b-7db8fb118c63","listingId":"4b8ab8d3-4831-4315-a19e-a8fbd92806ec","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/defi/aave/tvl","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T12:29:42.789Z"}],"sources":[{"listingId":"4b8ab8d3-4831-4315-a19e-a8fbd92806ec","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/aave/tvl","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T12:29:42.789Z","lastSeenAt":"2026-04-22T20:01:52.789Z"}],"details":{"listingId":"4b8ab8d3-4831-4315-a19e-a8fbd92806ec","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/aave/tvl \\\n  -H \"X-PAYMENT: <x402-signed-payment>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge accepting USDC on Base network, maxAmountRequired 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/defi/aave/tvl"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/defi/aave/tvl"}],"useCases":["Querying real-time Aave TVL for portfolio dashboards","Feeding DeFi analytics into automated trading agents","Monitoring Aave protocol health for risk management","Building DeFi comparison tools that aggregate TVL across protocols"],"bestFor":["Agents needing on-demand DeFi data without subscription overhead","Developers who want permissionless, key-free API access","Low-volume or bursty workloads where pay-per-call is cost-effective"],"notFor":["High-frequency polling where per-request costs accumulate quickly","Users who need detailed historical TVL time-series (not documented)","Applications requiring guaranteed SLA or uptime commitments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.698Z"},"updatedAt":"2026-04-22T20:01:52.789Z"}}