{"id":"3f9fe43a-6eaa-43b9-af85-974fe0b7da8a","shortId":"ZBKejp","kind":"x402","title":"NFT collection floor-price lookup via x402 micropayment on Base, $0.02 per request.","tagline":"NFT collection floor-price lookup via x402 micropayment on Base, $0.02 per request.","description":"This endpoint returns the floor price for NFT collection #48 hosted on lowpaymentfee.com. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint `/api/v1/collections/48/floor` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The provider advertises no API keys, no rate limits, and instant access — you pay per call with no subscription or commitment.\n\nDocumentation beyond the landing page is extremely thin: 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, and no example payloads available. The endpoint is live (returns a proper 402 challenge), but the actual response format after payment is unknown. The collection ID \"48\" is opaque — there is no published directory mapping collection IDs to NFT projects.","tags":[],"capabilities":["nft-floor-price","x402-payment","usdc-settlement","base-network","pay-per-request","json-api"],"categories":["finance","nft","web3"],"synonyms":["NFT floor price API","collection floor price","NFT market data","x402 NFT API","micropayment NFT data","Base USDC API","NFT pricing endpoint"],"warnings":["No OpenAPI or schema documentation available — request body and response format are unknown.","Collection ID 48 is opaque; no mapping to an actual NFT project is published.","All documentation pages (/docs, /pricing, /api, /README) render only a wallet-connect prompt with no content.","The broader platform lists many endpoint categories but this specific collections endpoint is not listed on the landing page, raising questions about its status."],"endpointUrl":"https://lowpaymentfee.com/api/v1/collections/48/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/48/floor","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI spec, no request/response schema, no documentation, and no examples. The collection ID is opaque. Effectively a stub 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'/api/v1/collections/48/floor':90 '/docs':154 '/pricing':156 '/readme':158 '0.02':12,26,117 '000':106 '0x8335':111 '20':105 '2913':112 '402':192 '48':38,206 '6':122 'Base USDC API' 'NFT floor price API' 'NFT market data' 'NFT pricing endpoint' 'accept':91 'access':135 'actual':196 'addit':169 'advertis':100,126 'ai/ml':63 'analyt':62 'api':54,128 'avail':184 'base':11,25,85,107,114 'base-network' 'beyond':146 'broader':47 'call':53,139 'challeng':99,193 'collect':2,16,37,204,215 'collection floor price' 'commit':144 'connect':164 'cost':103 'data':61,66 'decim':123 'detail':171 'directori':213 'document':145 'endpoint':30,71,89,186 'equal':116 'exampl':182 'extrem':151 'finance/web3':65 'floor':4,18,33 'floor-pric':3,17 'format':198 'host':39 'id':205,216 'infer':64 'instant':134 'json':96 'json-api' 'key':129 'land':148 'limit':132 'live':188 'lookup':6,20 'lowpaymentfee.com':41 'map':214 'maximum':102 'micropay':9,23 'micropayment NFT data' 'network':86 'nft':1,15,36,218 'nft-floor-price' 'offer':55 'opaqu':208 'openapi':175 'page':149,159 'part':44 'pay':51,137 'pay-per-cal':50 'pay-per-request' 'payload':183 'payment':78,200 'per':13,27,52,118,138 'platform':74 'post':92 'price':5,19,34 'project':219 'prompt':166 'proper':191 'protocol':79 'provid':59,125 'publish':212 'rate':131 'render':161 'request':14,28,93,119 'request/response':178 'respons':197 'return':31,95,189 'schema':179 'servic':69 'settl':80 'span':60 'spec':176 'specif':88 'subscript':142 'suit':48 'technic':170 'thin':152 'unit':108 'unknown':202 'usdc':82,110,120 'usdc-settlement' 'use':75,121 'util':68 'via':7,21 'wallet':165 'x402':8,22,77,98 'x402 NFT API' 'x402-payment'","prices":[{"id":"c58c51a3-d965-4655-a7dc-d3e3c607f85b","listingId":"3f9fe43a-6eaa-43b9-af85-974fe0b7da8a","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/48/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":"2026-04-19T00:59:37.068Z"}],"sources":[{"listingId":"3f9fe43a-6eaa-43b9-af85-974fe0b7da8a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/collections/48/floor","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T00:59:37.068Z","lastSeenAt":"2026-04-23T00:32:39.164Z"}],"details":{"listingId":"3f9fe43a-6eaa-43b9-af85-974fe0b7da8a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/collections/48/floor \\\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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/collections/48/floor"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/collections/48/floor"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying the current floor price of a specific NFT collection programmatically","Building trading bots or dashboards that need real-time NFT floor data","Agent-driven NFT market analysis without API key management"],"bestFor":["Agents or bots that can settle x402 payments in USDC on Base","Quick one-off floor price lookups without subscription overhead","Developers prototyping NFT analytics with minimal setup"],"notFor":["Bulk historical NFT price data retrieval (no batch or historical endpoints documented)","Users who need detailed collection metadata beyond floor price","Anyone unable to transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:24.789Z"},"updatedAt":"2026-04-23T00:32:39.164Z"}}