{"id":"7a8a23c4-3d2e-4549-a8c3-09af14da3722","shortId":"eWbxyn","kind":"x402","title":"OHLCV candlestick data for MASK token, paid per-request via x402 on Base.","tagline":"OHLCV candlestick data for MASK token, paid per-request via x402 on Base.","description":"This endpoint provides OHLCV (Open, High, Low, Close, Volume) candlestick data for the MASK token (Mask Network). It is part of the lowpaymentfee.com platform, which offers a broad suite of pay-per-request APIs spanning crypto market data, finance, AI/ML inference, analytics, and utilities. All endpoints use the x402 payment protocol on the Base network, settling in USDC.\n\nThe specific endpoint at `/api/v1/crypto/MASK/ohlcv` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…on Base), which equals $0.02 per request given USDC's 6 decimals. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each call.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of accepted parameters (e.g., time interval, date range) or response fields. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is difficult to know exactly what parameters to send or what shape the response takes.","tags":[],"capabilities":["ohlcv-candlestick-data","crypto-market-data","mask-token","x402-payment","per-request-pricing","base-network","usdc-settlement"],"categories":["finance","crypto"],"synonyms":["MASK OHLCV","Mask Network candlestick","MASK price history","crypto OHLCV API","MASK token chart data","candlestick data API","MASK market data"],"warnings":["No documentation available — all doc/API/pricing/README pages return only a 'Connect wallet' prompt with no content.","No OpenAPI or JSON schema provided; request parameters and response format are unknown.","Example request JSON is inferred/guessed — actual required fields are undocumented.","No response example available; response shape is entirely unknown."],"endpointUrl":"https://lowpaymentfee.com/api/v1/crypto/MASK/ohlcv","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/crypto/MASK/ohlcv","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documentation of request parameters or response format, and all doc pages return only a wallet-connect stub. The listing is essentially a stub with pricing 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'0.02':118 '000':108 '0x8335':113 '20':107 '402':201 '6':124 'MASK OHLCV' 'MASK market data' 'MASK price history' 'MASK token chart data' 'Mask Network candlestick' 'accept':93,183 'access':137 'advertis':102,128 'ai/ml':69 'analyt':71 'api':63,130,155 'attach':140 'base':14,28,83,109,115 'base-network' 'broad':56 'call':147 'candlestick':2,16,38 'candlestick data API' 'challeng':101,202 'close':36 'confirm':196 'connect':164 'content':170 'cost':105 'crawl':153 'crypto':65 'crypto OHLCV API' 'crypto-market-data' 'data':3,17,39,67 'date':188 'decim':125 'descript':181 'difficult':208 'doc':154 'document':148,205 'e.g':185 'endpoint':30,75,90,194 'equal':117 'exact':211 'exampl':178 'extrem':150 'field':192 'financ':68 'given':121 'header':144 'high':34 'infer':70 'instant':136 'interv':187 'json':98 'key':131 'know':210 'limit':134 'live':197 'low':35 'lowpaymentfee.com':51 'market':66 'mask':5,19,42,44 'mask-token' 'maximum':104 'network':45,84 'offer':54 'ohlcv':1,15,32 'ohlcv-candlestick-data' 'open':33 'openapi':174 'page':159 'paid':7,21 'paramet':184,213 'part':48 'pay':60 'pay-per-request':59 'payment':79,143 'per':9,23,61,119 'per-request':8,22 'per-request-pricing' 'platform':52,127 'post':94 'price':156 'prompt':166 'proper':200 'protocol':80 'provid':31 'rang':189 'rate':133 'readm':158 'request':10,24,62,95,120 'request/response':177 'respons':191,220 'return':97,161,198 'schema':175 'send':215 'settl':85 'shape':218 'simpli':139 'span':64 'spars':151 'specif':89 'suit':57 'take':221 'time':186 'token':6,20,43 'unit':110 'usdc':87,112,122 'usdc-settlement' 'use':76 'util':73 'via':11,25 'volum':37 'wallet':165 'without':204 'x402':12,26,78,100,142 'x402-payment'","prices":[{"id":"8cda4713-a417-4cd6-86f3-beb4f7cc28ec","listingId":"7a8a23c4-3d2e-4549-a8c3-09af14da3722","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/crypto/MASK/ohlcv","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:54.379Z"}],"sources":[{"listingId":"7a8a23c4-3d2e-4549-a8c3-09af14da3722","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/crypto/MASK/ohlcv","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:54.379Z","lastSeenAt":"2026-04-24T05:31:49.412Z"}],"details":{"listingId":"7a8a23c4-3d2e-4549-a8c3-09af14da3722","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/crypto/MASK/ohlcv \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"interval\": \"1d\", \"limit\": 30}'","exampleRequest":{"limit":30,"interval":"1d"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/crypto/MASK/ohlcv"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/crypto/MASK/ohlcv"},{"claim":"Platform 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":"The platform offers crypto endpoints including token quotes, gas estimates, and OHLCV data","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching historical OHLCV candlestick data for MASK token for charting or analysis","Building trading bots or dashboards that need MASK price data","Backtesting trading strategies on MASK token price movements"],"bestFor":["Agents or apps needing on-demand MASK token OHLCV data without API key management","Low-volume or sporadic crypto data queries where per-request pricing is economical","x402-native workflows that settle payments in USDC on Base"],"notFor":["High-frequency trading requiring sub-second latency and bulk historical downloads (no documented bulk endpoint)","Users who need comprehensive documentation or guaranteed SLA before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:40.377Z"},"updatedAt":"2026-04-24T05:31:49.412Z"}}