{"id":"58ea4e26-8904-45e1-b7be-bb17b773cd75","shortId":"qxucdA","kind":"x402","title":"BNB liquidity data via x402 micropayment on Base network, $0.02 per request.","tagline":"BNB liquidity data via x402 micropayment on Base network, $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides DeFi liquidity data for BNB, accessible via the x402 payment protocol. Each request costs $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals). No API keys or rate limits are required — callers simply attach an x402 payment header to a POST request and receive a JSON response.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services, all priced at $0.02 per request and settled on the Base L2 network using USDC. The specific endpoint `/api/v1/defi/BNB/liquidity` is categorized under the Finance & Web3 section and likely returns liquidity pool or liquidity-related metrics for BNB.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed description of what fields are returned. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual response payload structure is unknown. Callers should expect a JSON response but will need to experiment to discover the exact schema.","tags":[],"capabilities":["defi-liquidity-data","bnb-liquidity","x402-micropayment","usdc-base-settlement","pay-per-request","no-api-key"],"categories":["defi","finance"],"synonyms":["BNB liquidity","DeFi liquidity API","BNB pool data","liquidity metrics","BNB DeFi data","x402 DeFi endpoint","crypto liquidity"],"warnings":["No API documentation available — docs, API, pricing, and README pages all return only a 'Connect wallet' prompt with no content.","No OpenAPI or output schema provided; response structure is unknown.","The endpoint path suggests BNB liquidity data but no details on what metrics or fields are returned.","This specific endpoint (/api/v1/defi/BNB/liquidity) is not listed on the provider's homepage among the advertised APIs, raising questions about its completeness or support status."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/BNB/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/BNB/liquidity","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 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages returned only 'Connect wallet' with no usable content. The actual response format and fields are completely 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'0.02':10,22,44,115 '000':46 '20':45 '402':198 '6':58 'BNB DeFi data' 'BNB liquidity' 'BNB pool data' 'DeFi liquidity API' 'access':35 'actual':203 'ai/ml':105 'analyt':104 'api':61,101,157 'attach':70 'base':8,20,47,53,122 'bnb':1,13,34,149 'bnb-liquidity' 'broader':90 'call':100 'caller':68,209 'categor':132 'challeng':200 'confirm':193 'connect':166 'content':172 'cost':43 'crawl':155 'crypto liquidity' 'data':3,15,32,103,108 'decim':59 'defi':30 'defi-liquidity-data' 'descript':184 'detail':183 'discov':221 'doc':156 'document':150 'dozen':95 'endpoint':26,85,129,191 'exact':223 'exampl':180 'expect':211 'experi':219 'extrem':152 'field':187 'financ':135 'finance/web3':107 'header':74 'infer':106 'json':82,213 'key':62 'l2':123 'like':139 'limit':65 'liquid':2,14,31,141,145 'liquidity metrics' 'liquidity-rel':144 'live':194 'lowpaymentfee.com':28,92 'metric':147 'micropay':6,18 'need':217 'network':9,21,54,124 'no-api-key' 'offer':94 'openapi':176 'page':161 'part':87 'pay':98 'pay-per-cal':97 'pay-per-request' 'payload':205 'payment':39,73 'per':11,23,99,116 'platform':91 'pool':142 'post':77 'price':113,158 'prompt':168 'proper':197 'protocol':40 'provid':29 'rate':64 'readm':160 'receiv':80 'relat':146 'request':12,24,42,78,117 'request/response':179 'requir':67 'respons':83,204,214 'return':140,163,189,195 'schema':177,224 'section':137 'servic':111 'settl':119 'simpli':69 'span':102 'spars':153 'specif':128 'structur':206 'unit':48 'unknown':208 'usdc':50,56,126 'usdc-base-settlement' 'use':125 'util':110 'via':4,16,36 'wallet':167 'web3':136 'x402':5,17,38,72,199 'x402 DeFi endpoint' 'x402-micropayment'","prices":[{"id":"96edbf4e-37e3-461e-bb0e-157e6d8feb21","listingId":"58ea4e26-8904-45e1-b7be-bb17b773cd75","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/BNB/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":"2026-04-18T18:33:22.286Z"}],"sources":[{"listingId":"58ea4e26-8904-45e1-b7be-bb17b773cd75","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/BNB/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:22.286Z","lastSeenAt":"2026-04-23T02:00:23.123Z"}],"details":{"listingId":"58ea4e26-8904-45e1-b7be-bb17b773cd75","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/BNB/liquidity \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/defi/BNB/liquidity"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/BNB/liquidity"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying real-time BNB liquidity pool data for trading bots","Monitoring BNB DeFi liquidity for portfolio dashboards","Feeding BNB liquidity metrics into automated DeFi strategies","Comparing BNB liquidity across protocols"],"bestFor":["Agents or bots that need on-demand BNB liquidity data without managing API keys","Developers building DeFi dashboards who want simple pay-per-call pricing","x402-compatible clients on the Base network looking for cheap DeFi data"],"notFor":["Users who need detailed API documentation or guaranteed response schemas before integrating","High-volume consumers who need bulk/subscription pricing rather than per-call payments","Anyone needing liquidity data for tokens other than BNB from this specific endpoint"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:47:38.395Z"},"updatedAt":"2026-04-23T02:00:23.123Z"}}