{"id":"e56b9c38-c5c6-44d6-8163-8bfcae054ab3","shortId":"AmjfdD","kind":"x402","title":"NFT collection floor-price endpoint, pay-per-call at $0.02 via x402 on Base.","tagline":"NFT collection floor-price endpoint, pay-per-call at $0.02 via x402 on Base.","description":"This x402-enabled endpoint at lowpaymentfee.com returns floor-price data for NFT collections. The specific route `/api/v1/collections/1/floor` serves collection #1's floor price. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) at a maximum cost of $0.02 per request (20,000 base units with 6 decimals). The endpoint accepts POST requests and returns JSON.\n\nThe broader lowpaymentfee.com platform advertises a wide catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request. No API keys or rate limits are required; access is instant via the x402 payment protocol. However, the crawled documentation pages (docs, pricing, README) returned only a wallet-connect prompt with no substantive content, so details about request parameters, response schemas, and the actual data sources behind this endpoint are unknown.\n\nBecause the endpoint is live (returning a proper 402 challenge) but documentation is essentially absent, consumers should expect to experiment with the POST body to discover accepted parameters. The collection ID \"1\" in the URL path suggests a path-parameterized design where other collection IDs may also be queryable.","tags":[],"capabilities":["nft-floor-price","x402-payment","usdc-base","pay-per-call","json-api","collection-data"],"categories":["crypto","nft","finance"],"synonyms":["NFT floor price","collection floor","NFT market data","floor price API","crypto collectibles price","NFT collection stats"],"warnings":["No documentation available — docs, pricing, and README pages all return only a wallet-connect prompt with no content.","No request body schema or response schema documented; consumers must discover parameters experimentally.","The specific data source for NFT floor prices is unknown; data quality and freshness cannot be verified.","The endpoint path references collection ID '1' but it is unclear what collection this maps to or what other IDs are valid."],"endpointUrl":"https://lowpaymentfee.com/api/v1/collections/1/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/1/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 documentation, no request/response schema, and no examples. The actual data source and accuracy of floor-price data are 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'0.02':12,28,74,119 '000':78 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':68 '1':54,205 '20':77 '402':182 '6':82 'NFT collection stats' 'NFT floor price' 'NFT market data' 'absent':188 'accept':86,200 'access':130 'actual':166 'advertis':96 'ai/ml':109 'also':221 'analyt':108 'api':105,123 'base':16,32,63,79 'behind':169 'bodi':197 'broader':93 'call':10,26,104 'catalog':99 'challeng':183 'collect':2,18,47,53,203,218 'collection floor' 'collection-data' 'connect':151 'consum':189 'content':156 'contract':67 'cost':72 'crawl':140 'crypto collectibles price' 'data':44,107,112,167 'decim':83 'design':215 'detail':158 'discov':199 'doc':143 'document':141,185 'enabl':36 'endpoint':6,22,37,85,171,176 'essenti':187 'expect':191 'experi':193 'finance/web3':111 'floor':4,20,42,56 'floor price API' 'floor-pric':3,19,41 'howev':138 'id':204,219 'infer':110 'instant':132 'json':91 'json-api' 'key':124 'limit':127 'live':178 'lowpaymentfee.com':39,94 'maximum':71 'may':220 'network':64 'nft':1,17,46 'nft-floor-price' 'page':142 'paramet':161,201 'parameter':214 'path':209,213 'path-parameter':212 'pay':8,24,102 'pay-per-cal':7,23,101 'pay-per-call' 'payment':58,136 'per':9,25,75,103,120 'platform':95 'post':87,196 'price':5,21,43,57,117,144 'prompt':152 'proper':181 'protocol':137 'queryabl':223 'rate':126 'readm':145 'request':76,88,121,160 'requir':129 'respons':162 'return':40,90,146,179 'rout':50 'schema':163 'serv':52 'servic':115 'settl':60 'sourc':168 'span':106 'specif':49 'substant':155 'suggest':210 'unit':80 'unknown':173 'url':208 'usdc':66 'usdc-base' 'use':65 'util':114 'via':13,29,133 'wallet':150 'wallet-connect':149 'wide':98 'x402':14,30,35,135 'x402-enabled':34 'x402-payment'","prices":[{"id":"0813853a-cb88-4ee6-b872-7124771aac3d","listingId":"e56b9c38-c5c6-44d6-8163-8bfcae054ab3","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/1/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":"2026-04-18T19:59:49.581Z"}],"sources":[{"listingId":"e56b9c38-c5c6-44d6-8163-8bfcae054ab3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/collections/1/floor","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:49.581Z","lastSeenAt":"2026-04-23T02:02:01.471Z"}],"details":{"listingId":"e56b9c38-c5c6-44d6-8163-8bfcae054ab3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/collections/1/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":"Endpoint returns 402 with x402 challenge advertising USDC on Base at maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/collections/1/floor"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/collections/1/floor"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieve the current floor price for an NFT collection programmatically","Build trading bots that monitor NFT floor prices across collections","Integrate NFT market data into dashboards or portfolio trackers"],"bestFor":["Agents needing on-demand NFT floor-price lookups without API key management","Developers who want pay-per-call pricing with no subscription commitment","Crypto-native workflows settling micropayments on Base L2"],"notFor":["Users needing bulk historical NFT price data (no evidence of batch or historical endpoints)","Anyone requiring detailed documentation or guaranteed SLAs before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.766Z"},"updatedAt":"2026-04-23T02:02:01.471Z"}}