{"id":"1ab2fa01-d7fc-4819-a088-5d3c0b01c827","shortId":"gpegJp","kind":"x402","title":"x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at `/api/v1/nfts/41` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific resource `/api/v1/nfts/41` is labeled \"Premium API Access\" and returns JSON data, likely related to NFT information for token ID 41. 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).\n\nThe platform advertises a uniform $0.02/request pricing model across all its endpoints, with no API keys, no rate limits, and no minimum commitments. The x402 challenge is live and well-formed, using the \"exact\" payment scheme with a 300-second timeout. The endpoint accepts POST requests and is discoverable.\n\nNote that the specific response schema for this NFT endpoint is not documented. The platform's landing page lists many endpoints across categories but provides no detailed API documentation, request/response schemas, or usage examples. The `/api`, `/pricing`, and `/README` pages all resolve to a minimal \"Connect wallet\" prompt with no additional content. As a result, the exact data returned by this endpoint and the expected POST body are unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","nft-data","pay-per-request","no-api-key","json-response"],"categories":["web3","nft"],"synonyms":["NFT API","NFT data endpoint","pay-per-call NFT","x402 NFT","USDC micropayment API","lowpaymentfee","Base network API","crypto-gated API"],"warnings":["The /api/v1/nfts/41 endpoint is not listed among the provider's advertised APIs on the landing page — it may be undocumented or experimental.","No request body schema or response schema is available; the POST body format is unknown.","The /api, /pricing, and /README pages all return only a 'Connect wallet' prompt with no documentation.","The specific NFT data returned by this endpoint is unverified — 'Premium API Access' is a generic label used across the platform."],"endpointUrl":"https://lowpaymentfee.com/api/v1/nfts/41","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/nfts/41","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 well-formed, confirming the endpoint is operational with clear pricing. However, there is no API documentation, no request/response schema, no examples, and the NFT endpoint is not even listed on the provider's landing page among its advertised APIs. The actual data returned is entirely 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'/api/v1/nfts/41':32,62 '/pricing':194 '/readme':196 '/request':113 '0.02':10,24,97,112 '000':101 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':91 '20':100 '300':147 '41':80 '6':105 'Base network API' 'NFT API' 'NFT data endpoint' 'USDC micropayment API' 'accept':152 'access':67 'across':116,179 'addit':208 'advertis':109 'ai/ml':53 'analyt':52 'api':49,66,122,185 'base':8,22,86,102 'base-network' 'bodi':224 'call':48 'categori':180 'challeng':133 'collect':40 'commit':130 'connect':203 'content':209 'contract':90 'cost':95 'crypto-gated API' 'data':5,19,51,71,215 'decim':106 'detail':184 'discover':157 'document':170,186 'endpoint':6,20,30,119,151,167,178,219 'exact':142,214 'exampl':191 'expect':222 'finance/web3':55 'form':139 'gate':3,17 'id':79 'infer':54 'inform':76 'infrastructur':57 'json':70 'json-response' 'key':123 'label':64 'land':174 'like':72 'limit':126 'list':176 'live':135 'lowpaymentfee' 'lowpaymentfee.com':37 'mani':177 'maximum':94 'minim':202 'minimum':129 'model':115 'network':87 'nft':4,18,75,166 'nft-data' 'no-api-key' 'note':158 'page':175,197 'part':34 'pay':9,23,46 'pay-per-cal':45 'pay-per-call NFT' 'pay-per-request' 'payment':81,143 'per':11,25,47,98 'platform':38,108,172 'post':153,223 'premium':65 'price':114 'prompt':205 'protocol':44 'provid':182 'rate':125 'relat':73 'request':12,26,99,154 'request/response':187 'resolv':199 'resourc':61 'respons':162 'result':212 'return':69,216 'schema':163,188 'scheme':144 'second':148 'settl':83 'span':50 'specif':60,161 'timeout':149 'token':78 'uniform':111 'unit':103 'unknown':226 'usag':190 'usdc':14,28,89 'usdc-settlement' 'use':88,140 'util':58 'wallet':204 'well':138 'well-form':137 'x402':2,16,43,132 'x402 NFT' 'x402-gated':1,15 'x402-payment' 'x402-protocol':42","prices":[{"id":"1cf46f7a-4df3-4c17-aa94-839651cf5c0d","listingId":"1ab2fa01-d7fc-4819-a088-5d3c0b01c827","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/nfts/41","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:31.404Z"}],"sources":[{"listingId":"1ab2fa01-d7fc-4819-a088-5d3c0b01c827","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/nfts/41","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:31.404Z","lastSeenAt":"2026-04-22T10:03:09.097Z"}],"details":{"listingId":"1ab2fa01-d7fc-4819-a088-5d3c0b01c827","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/nfts/41 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","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 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/nfts/41"},{"claim":"USDC contract address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/nfts/41"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The landing page lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories but does not list /api/v1/nfts/41","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching NFT metadata or details for a specific token on-demand","Integrating pay-per-call NFT data into agent workflows without API key management","Programmatic access to NFT information settled via USDC on Base"],"bestFor":["Agents needing on-demand NFT data without subscription overhead","Developers experimenting with x402 payment protocol integrations","Low-volume or sporadic NFT data lookups at $0.02 per call"],"notFor":["High-volume NFT data ingestion where per-call costs add up quickly","Users who need detailed API documentation or guaranteed SLAs before integrating","Applications requiring non-USDC or non-Base-network payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:52.42Z"},"updatedAt":"2026-04-22T10:03:09.097Z"}}