{"id":"195ca074-b84c-453d-a355-441585bcd645","shortId":"YZvYjL","kind":"x402","title":"NFT collection floor-price data via x402 micropayment on Base, $0.02 per request.","tagline":"NFT collection floor-price data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns floor-price data for NFT collection ID 17. It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML, finance/Web3, and utility categories, all settled via the x402 protocol on the Base network using USDC.\n\nThe specific endpoint `/api/v1/collections/17/floor` accepts POST requests and returns JSON. Payment is handled inline via the x402 `exact` scheme: each call costs up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) sent to the provider's address on Base. No API keys or accounts are required — callers attach an `X-PAYMENT` header with a valid x402 payment proof and receive the response immediately.\n\nThe platform advertises uniform $0.02 pricing across all endpoints, no rate limits, and no minimum commitments. Documentation pages (docs, pricing, README) were largely empty at crawl time, showing only a \"Connect wallet\" prompt, so detailed request/response schemas and field definitions are unavailable. The endpoint is confirmed live (402 challenge captured).","tags":[],"capabilities":["nft-floor-price","x402-payment","usdc-base","pay-per-request","json-api","no-api-key"],"categories":["finance","nft","web3"],"synonyms":["NFT floor price","collection floor","NFT market data","floor price API","crypto collectibles price","x402 NFT data"],"warnings":["No request or response schema documented — callers must discover the format experimentally.","Documentation pages (/docs, /pricing, /README) are effectively empty, showing only 'Connect wallet'.","The endpoint path references a hardcoded collection ID (17); it is unclear what collection this maps to or whether other IDs are valid.","No information on data freshness, update frequency, or data source for floor prices."],"endpointUrl":"https://lowpaymentfee.com/api/v1/collections/17/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/17/floor","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, and all docs pages returned only a wallet-connect prompt. The specific data returned by this floor-price endpoint is entirely 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'0.02':12,26,106,150 '000':101 '17':42 '20':100 '402':193 '6':111 'NFT floor price' 'NFT market data' 'accept':80 'account':125 'across':56,152 'address':118 'advertis':148 'ai/ml':59 'analyt':58 'api':55,122 'attach':129 'base':11,25,72,102,120 'broader':48 'call':54,96 'caller':128 'captur':195 'categori':63 'challeng':194 'collect':2,16,40 'collection floor' 'commit':161 'confirm':191 'connect':176 'cost':97 'crawl':171 'crypto collectibles price' 'data':6,20,37,57 'decim':112 'definit':185 'detail':180 'doc':164 'document':162 'empti':169 'endpoint':30,78,154,189 'exact':93 'field':184 'finance/web3':60 'floor':4,18,35 'floor price API' 'floor-pric':3,17,34 'handl':88 'header':134 'id':41 'immedi':145 'inlin':89 'json':85 'json-api' 'key':123 'larg':168 'limit':157 'live':192 'lowpaymentfee.com':32 'micropay':9,23 'minimum':160 'network':73 'nft':1,15,39 'nft-floor-price' 'no-api-key' 'offer':50 'page':163 'part':45 'pay':52 'pay-per-cal':51 'pay-per-request' 'payment':86,133,139 'per':13,27,53 'platform':49,147 'post':81 'price':5,19,36,151,165 'prompt':178 'proof':140 'protocol':69 'provid':116 'rate':156 'readm':166 'receiv':142 'request':14,28,82 'request/response':181 'requir':127 'respons':144 'return':33,84 'schema':182 'scheme':94 'sent':113 'settl':65 'show':173 'sinc':108 'specif':77 'time':172 'unavail':187 'uniform':149 'unit':103 'usd':107 'usdc':75,105,109 'usdc-base' 'use':74,110 'util':62 'valid':137 'via':7,21,66,90 'wallet':177 'x':132 'x-payment':131 'x402':8,22,68,92,138 'x402 NFT data' 'x402-payment'","prices":[{"id":"e2aa2de6-a3c8-40bf-8fad-5ad78b576adc","listingId":"195ca074-b84c-453d-a355-441585bcd645","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/17/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":"2026-04-18T22:29:47.082Z"}],"sources":[{"listingId":"195ca074-b84c-453d-a355-441585bcd645","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/collections/17/floor","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T22:29:47.082Z","lastSeenAt":"2026-04-23T00:32:38.661Z"}],"details":{"listingId":"195ca074-b84c-453d-a355-441585bcd645","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/collections/17/floor \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\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 requiring USDC payment on Base","source_url":"https://lowpaymentfee.com/api/v1/collections/17/floor"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/collections/17/floor"},{"claim":"maxAmountRequired is 20000 base units (0.02 USD with 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/collections/17/floor"}],"useCases":["Fetching the current floor price of a specific NFT collection for trading bots","Monitoring NFT collection valuations in dashboards or alerts","Integrating floor-price feeds into DeFi or portfolio-tracking applications"],"bestFor":["Agents or bots needing on-demand NFT floor prices without API key management","Low-volume, pay-as-you-go NFT data consumers","x402-native workflows on the Base network"],"notFor":["High-frequency bulk NFT data ingestion (no documented batch endpoint)","Users who need detailed collection metadata, traits, or historical sales beyond floor price","Anyone without access to USDC on Base for payment"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.292Z"},"updatedAt":"2026-04-23T00:32:38.661Z"}}