{"id":"bb7fe537-ffdd-4f4a-adcd-64ca3eecbc82","shortId":"DfeA9G","kind":"x402","title":"Compound protocol TVL data via x402 micropayment on Base, $0.02 per request.","tagline":"Compound protocol TVL data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint returns Compound DeFi protocol Total Value Locked (TVL) data, accessible through the x402 payment protocol. It is part of a broader suite of APIs offered at lowpaymentfee.com covering data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nPayment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge confirms the endpoint is live and accepts POST requests. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds.\n\nDocumentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact structure of the TVL response must be inferred or discovered by making a paid request.","tags":[],"capabilities":["defi-tvl-data","compound-protocol","x402-payment","usdc-base-network","micropayment-api","real-time-data"],"categories":["defi","finance"],"synonyms":["Compound TVL","DeFi total value locked","Compound protocol data","TVL API","DeFi analytics","Compound finance TVL","locked value API"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no technical content","No example request or response payloads are available; the TVL data structure must be discovered empirically","The provider hosts a very broad set of endpoints (analytics, AI, finance, utils) all at $0.02 — quality and depth of each is unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/compound/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/compound/tvl","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no example payloads. The actual data returned is 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'/docs':144 '/pricing':146 '/readme':148 '0.02':10,22,67,121 '000':112 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':128 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':91 '20':111 '300':133 '6':117 'Compound TVL' 'Compound finance TVL' 'Compound protocol data' 'DeFi analytics' 'DeFi total value locked' 'TVL API' 'accept':101 'access':36 'addit':159 'address':127 'ai/ml':57 'amount':106 'analyt':56 'api':50,72 'avail':175 'base':9,21,86,113 'beyond':136 'broader':47 'call':109 'challeng':94 'commit':79 'compound':1,13,28 'compound-protocol' 'confirm':95 'connect':154 'contract':90 'cover':54 'data':4,16,35,55,60 'decim':118 'defi':29 'defi-tvl-data' 'detail':161 'discov':187 'document':135,170 'endpoint':26,97 'equal':120 'exact':177 'exampl':173 'extrem':141 'finance/web3':59 'infer':58,185 'key':73 'land':138 'limit':76 'live':99 'lock':33 'locked value API' 'lowpaymentfee.com':53 'make':189 'maximum':105 'micropay':7,19 'micropayment-api' 'must':183 'network':87 'offer':51 'openapi':165 'page':139,149 'paid':191 'part':44 'payload':174 'payment':40,81,123 'per':11,23,68,108 'post':102 'price':65 'prompt':156 'protocol':2,14,30,41 'rate':75 'real-time-data' 'render':151 'request':12,24,69,103,192 'request/response':168 'requir':80,107 'respons':182 'return':27 'schema':169 'second':134 'sent':125 'servic':63 'settl':83 'spars':142 'spec':166 'structur':178 'suit':48 'technic':160 'timeout':131 'total':31 'tvl':3,15,34,181 'unit':114 'usdc':89,116 'usdc-base-network' 'use':88 'util':62 'valu':32 'via':5,17 'wallet':155 'x402':6,18,39,93 'x402-payment'","prices":[{"id":"669816d8-2f9e-453b-9cc1-c943949a3094","listingId":"bb7fe537-ffdd-4f4a-adcd-64ca3eecbc82","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/compound/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":"2026-04-19T12:29:48.134Z"}],"sources":[{"listingId":"bb7fe537-ffdd-4f4a-adcd-64ca3eecbc82","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/compound/tvl","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T12:29:48.134Z","lastSeenAt":"2026-04-22T02:31:47.445Z"}],"details":{"listingId":"bb7fe537-ffdd-4f4a-adcd-64ca3eecbc82","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/compound/tvl \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge, confirming it is live on Base network using USDC","source_url":"https://lowpaymentfee.com/api/v1/defi/compound/tvl"},{"claim":"Price is $0.02 per request (20,000 base units USDC, 6 decimals)","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access advertised","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/compound/tvl"}],"useCases":["Querying current Compound protocol TVL for portfolio dashboards","Feeding DeFi TVL data into automated trading or risk management agents","Monitoring Compound protocol health metrics over time","Integrating TVL data into DeFi aggregator applications"],"bestFor":["Agents needing on-demand DeFi TVL data without API key management","Developers building Compound protocol analytics dashboards","Micropayment-native workflows on Base network"],"notFor":["High-frequency polling where per-request costs accumulate quickly","Users who need detailed historical TVL time-series (no evidence this is supported)","Anyone requiring comprehensive Compound protocol data beyond TVL"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.389Z"},"updatedAt":"2026-04-22T02:31:47.445Z"}}