{"id":"9e5d1964-7ea1-4e1e-aee1-4527d96436ce","shortId":"nErECe","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 at lowpaymentfee.com returns floor-price data for NFT collection ID 10. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all settled via the x402 protocol on the Base network using USDC. The specific endpoint path `/api/v1/collections/10/floor` suggests it serves NFT or digital-asset collection floor prices, though the provider's landing page categorizes its Finance & Web3 APIs under price feeds, token quotes, and similar headings.\n\nPayment is handled inline: callers receive a 402 challenge requiring an `X-PAYMENT` header with an exact-scheme USDC payment of up to 20,000 base units (i.e., $0.02 given USDC's 6 decimals) sent to the provider's address on Base. No API keys, subscriptions, or rate limits are advertised — access is purely pay-per-request. The response MIME type is `application/json`.\n\nDocumentation is extremely thin. The landing page lists many endpoints but provides no request/response schemas, parameter descriptions, or example payloads. The `/docs`, `/api`, `/pricing`, and `/README` pages all render only a \"Connect wallet\" prompt with no additional content. Because of this, the exact request body format and response structure for this endpoint are unknown and must be discovered experimentally.","tags":[],"capabilities":["nft-floor-price","x402-payment","usdc-micropayment","base-network","pay-per-request","json-api"],"categories":["finance","nft","web3"],"synonyms":["NFT floor price","collection floor","NFT price API","floor price lookup","digital asset floor","x402 NFT data","Base USDC API"],"warnings":["No API documentation available — /docs, /api, /pricing, and /README all return only a wallet-connect prompt with no content.","No request or response schema provided; callers must discover the payload format experimentally.","The endpoint path references collection ID 10 but no information is given about what collection this represents.","The landing page lists many endpoint categories but this specific /collections/10/floor path is not listed among them, raising questions about its status."],"endpointUrl":"https://lowpaymentfee.com/api/v1/collections/10/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/10/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 (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the docs pages are empty. The specific collection ID 10 is hard-coded in the path with no explanation of what collection it refers 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'/api/v1/collections/10/floor':75 '/docs':193 '/pricing':195 '/readme':197 '0.02':12,26,136 '000':132 '10':42 '20':131 '402':113 '6':140 'Base USDC API' 'NFT floor price' 'NFT price API' 'access':159 'addit':208 'address':147 'advertis':158 'api':55,97,151 'application/json':171 'asset':83 'base':11,25,67,133,149 'base-network' 'bodi':216 'broader':48 'call':54 'caller':110 'categor':93 'challeng':114 'collect':2,16,40,84 'collection floor' 'connect':203 'content':209 'data':37 'decim':141 'descript':188 'digit':82 'digital asset floor' 'digital-asset':81 'discov':229 'document':172 'endpoint':30,73,181,223 'exact':124,214 'exact-schem':123 'exampl':190 'experiment':230 'extrem':174 'feed':100 'financ':95 'floor':4,18,35,85 'floor price lookup' 'floor-pric':3,17,34 'format':217 'given':137 'handl':108 'head':105 'header':120 'i.e':135 'id':41 'inlin':109 'json-api' 'key':152 'land':91,177 'limit':156 'list':179 'lookup':6,20 'lowpaymentfee.com':32,58 'mani':180 'micropay':9,23 'mime':168 'must':227 'network':68 'nft':1,15,39,79 'nft-floor-price' 'offer':56 'page':92,178,198 'paramet':187 'part':45 'path':74 'pay':52,163 'pay-per-cal':51 'pay-per-request':162 'payload':191 'payment':106,119,127 'per':13,27,53,164 'price':5,19,36,86,99 'prompt':205 'protocol':64 'provid':89,145,183 'pure':161 'quot':102 'rate':155 'receiv':111 'render':200 'request':14,28,165,215 'request/response':185 'requir':115 'respons':167,219 'return':33 'schema':186 'scheme':125 'sent':142 'serv':78 'settl':60 'similar':104 'specif':72 'structur':220 'subscript':153 'suggest':76 'suit':49 'thin':175 'though':87 'token':101 'type':169 'unit':134 'unknown':225 'usdc':70,126,138 'usdc-micropayment' 'use':69 'via':7,21,61 'wallet':204 'web3':96 'x':118 'x-payment':117 'x402':8,22,63 'x402 NFT data' 'x402-payment'","prices":[{"id":"3881517a-e9e9-4152-8fe2-529449bdd138","listingId":"9e5d1964-7ea1-4e1e-aee1-4527d96436ce","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/10/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":"2026-04-18T20:29:38.311Z"}],"sources":[{"listingId":"9e5d1964-7ea1-4e1e-aee1-4527d96436ce","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/collections/10/floor","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T20:29:38.311Z","lastSeenAt":"2026-04-23T00:32:38.522Z"}],"details":{"listingId":"9e5d1964-7ea1-4e1e-aee1-4527d96436ce","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/collections/10/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 x402Version 1, exact scheme, on Base network, with maxAmountRequired of 20000 base units of USDC (asset 0x8335…)","source_url":"https://lowpaymentfee.com/api/v1/collections/10/floor"},{"claim":"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":"USDC on Base uses 6 decimals, so 20000 base units = $0.02","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","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 prefer pay-per-call pricing over monthly subscriptions","Applications already integrated with x402 payment flows on Base"],"notFor":["Bulk historical NFT price data retrieval (no batch or historical endpoints documented)","Users who need detailed collection metadata beyond floor price"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.479Z"},"updatedAt":"2026-04-23T00:32:38.522Z"}}