{"id":"f6169af8-38d0-4bd6-8d5a-1f74395c0da8","shortId":"gjUXM4","kind":"x402","title":"OHLCV candlestick data for VeChain (VET) via pay-per-request x402 on Base.","tagline":"OHLCV candlestick data for VeChain (VET) via pay-per-request x402 on Base.","description":"This endpoint provides OHLCV (Open, High, Low, Close, Volume) candlestick data for the VeChain (VET) cryptocurrency. It is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-call APIs spanning crypto market data, finance, AI/ML, analytics, and utilities — all gated via the x402 payment protocol on the Base network.\n\nEach request costs $0.02 in USDC (the x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC on Base, which equals $0.02 given USDC's 6 decimals). There are no API keys, no rate limits, and no subscription commitments — you simply attach an X-PAYMENT header with a valid x402 payment proof for each call. The endpoint accepts POST requests and returns JSON.\n\nThe provider's documentation pages (docs, pricing, API reference) were largely empty at crawl time, showing only a \"Connect wallet\" prompt, so the exact request parameters (e.g., time range, interval/granularity, pagination) and response schema are not documented in the crawl material. The endpoint is confirmed live via a 402 challenge response. Payment settles in USDC on the Base L2 network to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.","tags":[],"capabilities":["ohlcv-data","vet-vechain","crypto-market-data","x402-payment","base-network","usdc-settlement","pay-per-request","no-api-key"],"categories":["finance","crypto"],"synonyms":["VeChain candlestick data","VET OHLCV","VeChain price history","crypto candlestick API","VET market data","VeChain historical prices","VET price chart data"],"warnings":["Documentation pages (/docs, /pricing, /api, /README) returned only a 'Connect wallet' prompt with no actual content at crawl time.","No OpenAPI or schema documentation available — request parameters (interval, date range, etc.) and response format are entirely unknown.","The specific endpoint /api/v1/crypto/VET/ohlcv is not listed on the provider's homepage; only /api/v1/crypto/quotes and /api/v1/crypto/gas are shown, so this may be an undocumented or newer endpoint."],"endpointUrl":"https://lowpaymentfee.com/api/v1/crypto/VET/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/VET/ohlcv","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 via a valid x402 402 challenge, and pricing is clear ($0.02 USDC per request on Base). However, documentation pages are effectively empty, there is no OpenAPI schema, no request/response examples, and the exact parameters and response format for the OHLCV endpoint are 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'000':97 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':211 '20':96 '402':197 '6':110 'VET OHLCV' 'VET market data' 'VET price chart data' 'VeChain candlestick data' 'VeChain historical prices' 'VeChain price history' 'accept':143 'address':210 'advertis':92 'ai/ml':68 'analyt':69 'api':62,115,156 'attach':126 'base':14,28,81,98,103,206 'base-network' 'broad':55 'call':61,140 'candlestick':2,16,38 'catalog':56 'challeng':91,198 'close':36 'commit':123 'confirm':193 'connect':167 'cost':85 'crawl':162,188 'crypto':64 'crypto candlestick API' 'crypto-market-data' 'cryptocurr':44 'data':3,17,39,66 'decim':111 'doc':154 'document':152,185 'e.g':175 'empti':160 'endpoint':30,142,191 'equal':105 'exact':172 'financ':67 'gate':73 'given':107 'header':131 'high':34 'interval/granularity':178 'json':148 'key':116 'l2':207 'larg':159 'limit':119 'live':194 'low':35 'lowpaymentfee.com':50 'market':65 'materi':189 'maxamountrequir':94 'network':82,208 'no-api-key' 'offer':53 'ohlcv':1,15,32 'ohlcv-data' 'open':33 'page':153 'pagin':179 'paramet':174 'part':47 'pay':9,23,59 'pay-per-cal':58 'pay-per-request':8,22 'payment':77,130,136,200 'per':10,24,60 'platform':51 'post':144 'price':155 'prompt':169 'proof':137 'protocol':78 'provid':31,150 'rang':177 'rate':118 'refer':157 'request':11,25,84,145,173 'respons':181,199 'return':147 'schema':182 'settl':201 'show':164 'simpli':125 'span':63 'subscript':122 'time':163,176 'unit':99 'usdc':88,101,108,203 'usdc-settlement' 'util':71 'valid':134 'vechain':5,19,42 'vet':6,20,43 'vet-vechain' 'via':7,21,74,195 'volum':37 'wallet':168 'x':129 'x-payment':128 'x402':12,26,76,90,135 'x402-payment'","prices":[{"id":"00a827e1-9bb6-44e6-88c3-ea5772418679","listingId":"f6169af8-38d0-4bd6-8d5a-1f74395c0da8","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/VET/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":"2026-04-18T18:34:41.256Z"}],"sources":[{"listingId":"f6169af8-38d0-4bd6-8d5a-1f74395c0da8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/crypto/VET/ohlcv","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:41.256Z","lastSeenAt":"2026-04-23T20:01:32.667Z"}],"details":{"listingId":"f6169af8-38d0-4bd6-8d5a-1f74395c0da8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/crypto/VET/ohlcv \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -d '{}'","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/crypto/VET/ohlcv"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/crypto/VET/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 /api/v1/crypto/quotes and /api/v1/crypto/gas","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching VeChain OHLCV candles for trading bots or algorithmic strategies","Building price charts and technical analysis dashboards for VET","Backtesting trading strategies against historical VET price data","Integrating VeChain market data into portfolio tracking applications","Agent-driven crypto research requiring on-demand VET price history"],"bestFor":["Developers needing quick, keyless access to VET candlestick data","AI agents that can settle micropayments via x402 on Base","Low-volume or sporadic use cases where $0.02/request is cost-effective"],"notFor":["High-frequency trading requiring sub-second latency or websocket streams","Users who need free or subscription-based bulk historical data downloads","Non-VET cryptocurrency OHLCV data (use sibling endpoints on the same platform)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:37:36.717Z"},"updatedAt":"2026-04-23T20:01:32.667Z"}}