{"id":"c38dc576-e619-47eb-b777-9cdcfe101e08","shortId":"kZgF5D","kind":"x402","title":"BLUR liquidity data via x402 micropayment on Base — $0.02 per request in USDC.","tagline":"BLUR liquidity data via x402 micropayment on Base — $0.02 per request in USDC.","description":"This endpoint provides DeFi liquidity data for the BLUR token/protocol, accessible through the x402 payment protocol on the Base network. Each request costs 20,000 base units of USDC (0.02 USD) paid per call with no API keys, rate limits, or subscriptions required.\n\nThe endpoint is part of a broader suite of APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced uniformly at $0.02 per request. Payment is settled on-chain via USDC on Base (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.\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 description of what fields the BLUR liquidity endpoint accepts or returns. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual data format and parameters must be discovered experimentally.","tags":[],"capabilities":["defi-liquidity-data","blur-protocol","x402-micropayment","usdc-payment","base-network","per-request-pricing","no-api-key"],"categories":["defi","finance"],"synonyms":["BLUR liquidity","DeFi liquidity API","BLUR token data","crypto liquidity endpoint","on-chain liquidity","BLUR DeFi","micropayment API"],"warnings":["No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'","No OpenAPI or output schema describing request parameters or response format","Request/response structure for BLUR liquidity data must be discovered experimentally","The endpoint description is generic ('Premium API Access') and does not describe the data returned"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/BLUR/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/BLUR/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","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 a wallet-connect prompt. The actual data contract is unknown, making this effectively a stub 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'000':51 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':114 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':111 '20':50 '402':167 'BLUR DeFi' 'BLUR liquidity' 'BLUR token data' 'DeFi liquidity API' 'accept':156 'access':37 'actual':172 'address':113 'ai/ml':87 'analyt':86 'api':63,79,122 'base':8,21,45,52,109 'base-network' 'blur':1,14,35,153 'blur-protocol' 'broader':76 'call':60 'chain':105 'challeng':169 'confirm':162 'connect':131 'content':137 'contract':110 'cost':49 'crawl':120 'crypto liquidity endpoint' 'data':3,16,32,85,173 'defi':30 'defi-liquidity-data' 'descript':148 'discov':179 'doc':121 'document':115 'endpoint':28,71,155,160 'exampl':145 'experiment':180 'extrem':117 'field':151 'finance/web3':89 'format':174 'infer':88 'infrastructur':91 'key':64 'limit':66 'liquid':2,15,31,154 'live':163 'lowpaymentfee.com':82 'micropay':6,19 'micropayment API' 'must':177 'network':46 'no-api-key' 'offer':80 'on-chain':103 'on-chain liquidity' 'openapi':141 'page':126 'paid':58 'paramet':176 'part':73 'payment':41,100 'per':10,23,59,98 'per-request-pricing' 'price':94,123 'prompt':133 'proper':166 'protocol':42 'provid':29 'rate':65 'readm':125 'request':11,24,48,99 'request/response':144 'requir':69 'return':128,158,164 'schema':142 'settl':102 'span':84 'spars':118 'subscript':68 'suit':77 'token/protocol':36 'uniform':95 'unit':53 'usd':57 'usdc':13,26,55,107 'usdc-payment' 'util':92 'via':4,17,106 'wallet':132 'x402':5,18,40,168 'x402-micropayment'","prices":[{"id":"089b4488-5cfd-4563-8d81-e2205ce43879","listingId":"c38dc576-e619-47eb-b777-9cdcfe101e08","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/BLUR/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":"2026-04-18T18:36:52.886Z"}],"sources":[{"listingId":"c38dc576-e619-47eb-b777-9cdcfe101e08","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/BLUR/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:52.886Z","lastSeenAt":"2026-04-22T21:30:30.894Z"}],"details":{"listingId":"c38dc576-e619-47eb-b777-9cdcfe101e08","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/BLUR/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":"Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/BLUR/liquidity"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/defi/BLUR/liquidity"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying real-time BLUR liquidity pool data for trading bots or dashboards","Integrating BLUR liquidity metrics into DeFi aggregator applications","Agent-driven DeFi research that needs per-call payment without subscriptions"],"bestFor":["Developers building DeFi dashboards needing BLUR liquidity info","AI agents that can pay per-request via x402 on Base","Projects that want keyless, subscription-free access to DeFi data"],"notFor":["Users needing detailed API documentation or guaranteed SLAs before integrating","High-volume consumers who need bulk pricing or rate-limit guarantees","Anyone looking for non-BLUR DeFi liquidity data from this specific endpoint"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.526Z"},"updatedAt":"2026-04-22T21:30:30.894Z"}}