{"id":"21814d9d-753b-473e-a8f5-f2de40ab487d","shortId":"vn5Rhf","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 #36 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 use the x402 protocol on the Base network, settling in USDC at $0.02 per request.\n\nThe specific endpoint `/api/v1/collections/36/floor` accepts POST requests and returns JSON. Based on the URL structure, it appears to serve NFT or digital-asset collection floor-price data, though the provider's landing page does not explicitly document this particular route — it is not listed among the advertised API categories. The x402 challenge confirms the endpoint is live, requires a payment of 20,000 base units of USDC (0.02 USD given 6 decimals) on Base mainnet, and responds with `application/json`.\n\nNo OpenAPI schema, detailed request/response documentation, or usage examples were found in the crawl. The docs, pricing, and API pages all rendered only a \"Connect wallet\" prompt with no additional content. Because of this, the exact request body format and response shape are unknown and must be discovered by the caller.","tags":[],"capabilities":["nft-floor-price","x402-payment","usdc-settlement","base-network","pay-per-request","json-api"],"categories":["finance","nft","web3"],"synonyms":["NFT floor price","collection floor","NFT collection data","floor price API","digital asset floor","NFT market data"],"warnings":["This specific endpoint (/api/v1/collections/36/floor) is not listed among the provider's advertised APIs — it may be undocumented or experimental.","No request body schema or response schema is available; callers must discover the format by trial.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no substantive content.","The nature of 'collection 36' is unknown — there is no metadata about what collection this refers to."],"endpointUrl":"https://lowpaymentfee.com/api/v1/collections/36/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/36/floor","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documented request/response format, and the specific endpoint is not listed on the provider's own landing page. Docs pages returned only a wallet-connect prompt with no useful 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'0.02':12,26,84,156 '000':151 '20':150 '36':38 '6':159 'NFT collection data' 'NFT floor price' 'NFT market data' 'accept':91 'addit':197 'advertis':135 'ai/ml':63 'among':133 'analyt':62 'api':54,136,186 'appear':103 'application/json':167 'asset':110 'base':11,25,78,97,152,162 'base-network' 'bodi':205 'broader':47 'call':53 'caller':218 'categori':137 'challeng':140 'collect':2,16,37,111 'collection floor' 'confirm':141 'connect':192 'content':198 'crawl':181 'data':61,66,115 'decim':160 'detail':171 'digit':109 'digital asset floor' 'digital-asset':108 'discov':215 'doc':183 'document':125,173 'endpoint':30,71,89,143 'exact':203 'exampl':176 'explicit':124 'finance/web3':65 'floor':4,18,33,113 'floor price API' 'floor-pric':3,17,112 'format':206 'found':178 'given':158 'host':39 'infer':64 'json':96 'json-api' 'land':120 'list':132 'live':145 'lookup':6,20 'lowpaymentfee.com':41 'mainnet':163 'micropay':9,23 'must':213 'network':79 'nft':1,15,36,106 'nft-floor-price' 'offer':55 'openapi':169 'page':121,187 'part':44 'particular':127 'pay':51 'pay-per-cal':50 'pay-per-request' 'payment':148 'per':13,27,52,85 'post':92 'price':5,19,34,114,184 'prompt':194 'protocol':75 'provid':59,118 'render':189 'request':14,28,86,93,204 'request/response':172 'requir':146 'respond':165 'respons':208 'return':31,95 'rout':128 'schema':170 'serv':105 'servic':69 'settl':80 'shape':209 'span':60 'specif':88 'structur':101 'suit':48 'though':116 'unit':153 'unknown':211 'url':100 'usag':175 'usd':157 'usdc':82,155 'usdc-settlement' 'use':72 'util':68 'via':7,21 'wallet':193 'x402':8,22,74,139 'x402-payment'","prices":[{"id":"f5a7b4b3-e783-4df2-a2be-c8b2f209602e","listingId":"21814d9d-753b-473e-a8f5-f2de40ab487d","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/36/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":"2026-04-19T05:29:49.393Z"}],"sources":[{"listingId":"21814d9d-753b-473e-a8f5-f2de40ab487d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/collections/36/floor","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T05:29:49.393Z","lastSeenAt":"2026-04-22T23:02:26.756Z"}],"details":{"listingId":"21814d9d-753b-473e-a8f5-f2de40ab487d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/collections/36/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 HTTP 402 with an x402 challenge requiring 20,000 base-unit USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/collections/36/floor"},{"claim":"The provider advertises $0.02 per request across all APIs 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/36/floor"}],"useCases":["Querying the current floor price of a specific NFT collection programmatically","Building trading bots or dashboards that need real-time NFT floor data","Agents that compare floor prices across collections before making purchase decisions"],"bestFor":["AI agents needing on-demand NFT floor prices without API key management","Developers who want pay-per-call pricing with no subscription commitment","Crypto-native workflows that can settle micropayments in USDC on Base"],"notFor":["Users who need bulk historical floor-price data (no batch or historical endpoint documented)","Applications that cannot handle x402 payment flows or USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:24.602Z"},"updatedAt":"2026-04-22T23:02:26.756Z"}}