{"id":"2946b745-a057-4bd5-a705-7990afae3408","shortId":"eTaXEN","kind":"x402","title":"Get the current price of MASK token via a pay-per-call x402 endpoint on Base.","tagline":"Get the current price of MASK token via a pay-per-call x402 endpoint on Base.","description":"This endpoint returns the current price of the MASK token. It is part of a broader suite of pay-per-request APIs hosted at lowpaymentfee.com, covering data analytics, AI/ML inference, finance/Web3 data, and utility services. The specific endpoint `/api/v1/tokens/MASK/price` falls under the Finance & Web3 category and provides token price data.\n\nThe endpoint uses the x402 payment protocol on the Base network, accepting USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) for payment. The maximum amount required per request is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). There are no API keys, no rate limits, and no minimum commitments — you simply attach an x402 payment header with each POST request and receive the response.\n\nDocumentation beyond the landing page is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI schema, no example request/response payloads, and no description of the response format beyond the stated MIME type of `application/json`. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know the exact shape of the returned data.","tags":[],"capabilities":["token-price-lookup","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","crypto-market-data"],"categories":["finance","crypto"],"synonyms":["MASK token price","MASK price API","token price feed","crypto price endpoint","x402 price API","MASK USD price","pay-per-call crypto data"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or schema definition for request or response payloads","Response format for MASK price data is completely undocumented","The broader lowpaymentfee.com platform lists many endpoints but provides no technical details for any of them"],"endpointUrl":"https://lowpaymentfee.com/api/v1/tokens/MASK/price","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/tokens/MASK/price","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 ($0.02 per request in USDC on Base). However, there is no OpenAPI schema, no example request/response, and all documentation pages beyond the landing page are empty ('Connect wallet' only). The response format is entirely unknown, making this effectively a stub 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'0.02':118 '000':111 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':100 '20':110 '402':208 '6':121 'MASK USD price' 'MASK price API' 'MASK token price' 'accept':97 'addit':174 'ai/ml':64 'amount':105 'analyt':63 'api':57,126,160 'application/json':199 'attach':137 'base':17,34,95,112 'base-network' 'beyond':151,193 'broader':50 'call':13,30 'categori':80 'challeng':209 'commit':134 'confirm':203 'connect':169 'contract':99 'cover':61 'crypto price endpoint' 'crypto-market-data' 'current':3,20,39 'data':62,67,85,226 'decim':122 'descript':188 'detail':176 'difficult':217 'doc':159 'document':150,214 'endpoint':15,32,36,73,87,201 'equal':117 'exact':221 'exampl':183 'extrem':156 'fall':75 'financ':78 'finance/web3':66 'format':192 'get':1,18 'header':141 'host':58 'infer':65 'key':127 'know':219 'lack':212 'land':153 'limit':130 'live':204 'lowpaymentfee.com':60 'make':215 'mask':6,23,43 'maximum':104 'mime':196 'minimum':133 'network':96 'no-api-key' 'openapi':180 'page':154,164 'part':47 'pay':11,28,54 'pay-per-cal':10,27 'pay-per-call crypto data' 'pay-per-request':53 'payload':185 'payment':91,102,140 'per':12,29,55,107 'post':144 'price':4,21,40,84,161 'prompt':171 'proper':207 'protocol':92 'provid':82 'rate':129 'readm':163 'receiv':147 'render':166 'request':56,108,145 'request/response':184 'requir':106 'respons':149,191 'return':37,205,225 'schema':181 'servic':70 'shape':222 'simpli':136 'spars':157 'specif':72 'state':195 'suit':51 'technic':175 'token':7,24,44,83 'token price feed' 'token-price-lookup' 'type':197 'unit':113 'usdc':98,115,119 'usdc-settlement' 'use':88,120 'util':69 'via':8,25 'wallet':170 'web3':79 'x402':14,31,90,139 'x402 price API' 'x402-payment'","prices":[{"id":"70d83230-8a2c-47b6-9def-d3d98eb1578e","listingId":"2946b745-a057-4bd5-a705-7990afae3408","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/tokens/MASK/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:08.730Z"}],"sources":[{"listingId":"2946b745-a057-4bd5-a705-7990afae3408","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tokens/MASK/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:08.730Z","lastSeenAt":"2026-04-24T03:02:52.484Z"}],"details":{"listingId":"2946b745-a057-4bd5-a705-7990afae3408","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tokens/MASK/price \\\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 of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/tokens/MASK/price"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/tokens/MASK/price"},{"claim":"Pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The site lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching the current market price of the MASK token programmatically","Building trading bots or dashboards that need real-time MASK pricing","Agents that need on-demand token price lookups without managing API keys"],"bestFor":["Developers or agents needing quick, keyless access to MASK token price data","Pay-per-use crypto price queries settled in USDC on Base","Lightweight integrations that don't want subscription overhead"],"notFor":["Bulk historical price data retrieval (no evidence of historical endpoints)","Users who need comprehensive multi-token price feeds in a single call","Anyone requiring detailed API documentation or guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:39.743Z"},"updatedAt":"2026-04-24T03:02:52.484Z"}}