{"id":"ab7808dc-558a-48f7-8afc-2183d599bfa2","shortId":"dVA6uq","kind":"x402","title":"DeFi liquidity data for BAT token, paid per-request via x402 on Base network.","tagline":"DeFi liquidity data for BAT token, paid per-request via x402 on Base network.","description":"This endpoint at lowpaymentfee.com provides DeFi liquidity data for the BAT (Basic Attention Token) via a POST request. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol on the Base network, settling in USDC.\n\nThe specific endpoint `/api/v1/defi/BAT/liquidity` returns JSON data related to BAT liquidity in DeFi contexts. The x402 challenge confirms the endpoint is live, accepting payments of up to 0.02 USDC (20,000 base units of USDC with 6 decimals) per request to a specified wallet address. The payment scheme is \"exact\" with a 300-second timeout.\n\nDocumentation is extremely sparse — the provider's docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The endpoint name and path suggest it returns liquidity metrics for BAT, but the exact response structure is unknown. The provider advertises no API keys, no rate limits, and instant access across all their endpoints.","tags":[],"capabilities":["defi-liquidity-data","bat-token","per-request-payment","x402-protocol","base-network","usdc-settlement","json-response"],"categories":["defi","finance","crypto"],"synonyms":["BAT liquidity","Basic Attention Token liquidity","DeFi liquidity API","BAT DeFi data","token liquidity endpoint","crypto liquidity data"],"warnings":["No API documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content.","No request or response schema provided; the exact structure of the liquidity data is unknown.","The endpoint /api/v1/defi/BAT/liquidity is not listed on the provider's homepage among their advertised APIs, raising questions about its completeness or support status.","No OpenAPI spec or ai-plugin manifest found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/BAT/liquidity","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/BAT/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC per request), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The actual data returned is entirely unknown, making this effectively a stub 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'0.02':118 '000':121 '20':120 '300':143 '6':127 'BAT DeFi data' 'BAT liquidity' 'Basic Attention Token liquidity' 'DeFi liquidity API' 'accept':113 'access':217 'across':218 'address':135 'advertis':208 'ai/ml':70 'analyt':69 'api':61,156,210 'attent':43 'avail':182 'base':14,29,86,122 'base-network' 'basic':42 'bat':5,20,41,100,198 'bat-token' 'broader':54 'call':60 'challeng':107 'confirm':108 'connect':162 'context':104 'crawl':185 'crypto':73 'crypto liquidity data' 'data':3,18,38,68,97 'decim':128 'defi':1,16,36,103 'defi-liquidity-data' 'detail':169 'doc':153 'document':146 'endpoint':32,78,93,110,188,221 'exact':140,201 'exampl':181 'extrem':148 'financ':72 'infer':71 'instant':216 'json':96 'json-response' 'key':211 'limit':214 'liquid':2,17,37,101,195 'live':112 'lowpaymentfee.com':34 'materi':186 'metric':196 'name':189 'network':15,30,87 'offer':62 'openapi':173 'page':157 'paid':7,22 'part':51 'path':191 'pay':58 'pay-per-cal':57 'payment':82,114,137 'per':9,24,59,129 'per-request':8,23 'per-request-payment' 'post':47 'price':154 'prompt':164 'protocol':83 'provid':35,66,151,207 'rate':213 'relat':98 'render':159 'request':10,25,48,130 'request/response':176 'respons':202 'return':95,194 'schema':177 'scheme':138 'second':144 'servic':76 'settl':88 'span':67 'spars':149 'spec':174 'specif':92 'specifi':133 'structur':203 'suggest':192 'suit':55 'technic':168 'timeout':145 'token':6,21,44 'token liquidity endpoint' 'unit':123 'unknown':205 'usag':180 'usdc':90,119,125 'usdc-settlement' 'use':79 'util':75 'via':11,26,45 'wallet':134,163 'x402':12,27,81,106 'x402-protocol'","prices":[{"id":"556b62d3-d5de-4ed1-aca8-8845783547e0","listingId":"ab7808dc-558a-48f7-8afc-2183d599bfa2","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/BAT/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:05.219Z"}],"sources":[{"listingId":"ab7808dc-558a-48f7-8afc-2183d599bfa2","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/BAT/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:05.219Z","lastSeenAt":"2026-04-22T21:30:28.787Z"}],"details":{"listingId":"ab7808dc-558a-48f7-8afc-2183d599bfa2","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/BAT/liquidity \\\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":"The endpoint returns HTTP 402 with an x402 challenge requiring up to 20,000 base units of USDC (0.02 USD) on Base network.","source_url":"https://lowpaymentfee.com/api/v1/defi/BAT/liquidity"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/defi/BAT/liquidity"},{"claim":"Docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no further content.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Querying real-time DeFi liquidity depth for BAT across protocols","Building dashboards that display BAT liquidity metrics","Automated trading bots that check BAT liquidity before executing swaps","Portfolio analytics tools needing on-demand liquidity snapshots"],"bestFor":["Agents or apps needing on-demand BAT liquidity data without API key management","Pay-per-use DeFi data consumers on Base network","Developers prototyping DeFi tools who want zero-commitment access"],"notFor":["Users needing detailed API documentation or guaranteed SLAs before integrating","High-frequency consumers who need bulk/subscription pricing rather than per-call payments","Non-crypto users unfamiliar with x402 payment flows"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:48.888Z"},"updatedAt":"2026-04-22T21:30:28.787Z"}}