{"id":"921de7b3-ddb9-4913-96a4-a3b4b734778a","shortId":"E5NLVJ","kind":"x402","title":"NFT collection floor price data via x402 micropayment on Base network, $0.02/request.","tagline":"NFT collection floor price data via x402 micropayment on Base network, $0.02/request.","description":"This endpoint provides NFT collection floor price data at the path `/api/v1/collections/25/floor`. It is part of a broader suite of pay-per-request APIs hosted on lowpaymentfee.com, all settled via the x402 protocol on the Base network using USDC. The specific endpoint returns JSON data about the floor price of collection ID 25.\n\nThe provider operates a multi-category API platform covering data & analytics, AI/ML inference, finance & Web3, and infrastructure utilities—all priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments. Payment is handled inline via the x402 payment header using USDC on Base (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).\n\nDocumentation is extremely sparse—the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI schema, no example request/response documentation, and no description of what fields the floor price response contains. The endpoint is confirmed live (returns 402 challenge) and accepts POST requests.","tags":[],"capabilities":["nft-floor-price","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["crypto","nft","finance"],"synonyms":["NFT floor price","collection floor","NFT market data","crypto collectibles price","x402 NFT API","micropayment NFT data"],"warnings":["No API documentation available—docs page only shows 'Connect wallet'","No OpenAPI schema or response examples provided","The specific endpoint /api/v1/collections/25/floor is not listed among the provider's advertised APIs on the homepage","Unknown what 'collection 25' refers to—no collection directory found","Cannot verify what data fields the response contains"],"endpointUrl":"https://lowpaymentfee.com/api/v1/collections/25/floor","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/collections/25/floor","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 with a valid 402 challenge, but documentation is essentially nonexistent—no schema, no example responses, no description of what 'collection 25' is. The specific endpoint path (collections/25/floor) is not even listed on the provider's homepage, making it unclear what data is actually 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'/request':13,26 '0.02':12,25,103 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':131 '25':80 '402':180 'NFT floor price' 'NFT market data' 'accept':183 'addit':151 'ai/ml':93 'analyt':92 'api':51,88,108,140 'base':10,23,63,129 'base-network' 'broader':44 'categori':87 'challeng':181 'collect':2,15,31,78 'collection floor' 'commit':116 'confirm':177 'connect':146 'contain':173 'contract':130 'cover':90 'crypto collectibles price' 'data':5,18,34,72,91 'descript':165 'detail':153 'doc':137 'document':132,162 'endpoint':28,69,175 'exampl':160 'extrem':134 'field':168 'financ':95 'floor':3,16,32,75,170 'handl':119 'header':125 'host':52 'id':79 'infer':94 'infrastructur':98 'inlin':120 'json':71 'key':109 'limit':112 'live':178 'lowpaymentfee.com':54 'micropay':8,21 'micropayment NFT data' 'minimum':115 'multi':86 'multi-categori':85 'network':11,24,64 'nft':1,14,30 'nft-floor-price' 'no-api-key' 'openapi':157 'oper':83 'page':141 'part':41 'path':37 'pay':48 'pay-per-request':47 'payment':117,124 'per':49,104 'platform':89 'post':184 'price':4,17,33,76,101,138,171 'prompt':148 'protocol':60 'provid':29,82 'rate':111 'render':143 'request':50,105,185 'request/response':161 'respons':172 'return':70,179 'schema':158 'settl':56 'spars':135 'specif':68 'suit':45 'technic':152 'usdc':66,127 'usdc-settlement' 'use':65,126 'util':99 'via':6,19,57,121 'wallet':147 'web3':96 'x402':7,20,59,123 'x402 NFT API' 'x402-payment'","prices":[{"id":"86c54bc8-af80-418b-8dba-d6d77ba865e6","listingId":"921de7b3-ddb9-4913-96a4-a3b4b734778a","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/collections/25/floor","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T00:29:49.677Z"}],"sources":[{"listingId":"921de7b3-ddb9-4913-96a4-a3b4b734778a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/collections/25/floor","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T00:29:49.677Z","lastSeenAt":"2026-04-23T00:32:38.917Z"}],"details":{"listingId":"921de7b3-ddb9-4913-96a4-a3b4b734778a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/collections/25/floor \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\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 at $0.02 per request","source_url":"https://lowpaymentfee.com/api/v1/collections/25/floor"},{"claim":"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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/collections/25/floor"}],"useCases":["Querying the current floor price of a specific NFT collection","Building NFT portfolio trackers that need real-time floor data","Automated trading bots that monitor collection floors","Integrating NFT pricing into dashboards without API key management"],"bestFor":["Agents needing on-demand NFT floor prices without subscription","Developers who prefer crypto-native pay-per-call pricing","Applications requiring keyless, low-friction API access on Base"],"notFor":["High-volume bulk NFT data ingestion (no documented batch endpoints)","Users who need detailed collection metadata beyond floor price","Developers requiring comprehensive API documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.043Z"},"updatedAt":"2026-04-23T00:32:38.917Z"}}