{"id":"a5dba4ae-e6dc-4e70-857a-e4d8b155dc90","shortId":"UDQQD4","kind":"x402","title":"HBAR OHLCV candlestick data via x402 micropayment on Base, $0.02 per request.","tagline":"HBAR OHLCV candlestick data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides OHLCV (Open, High, Low, Close, Volume) candlestick data for the HBAR (Hedera) cryptocurrency. It is part of the lowpaymentfee.com platform, which offers a suite of data, AI, finance, and utility APIs all gated behind the x402 payment protocol on the Base network.\n\nThe endpoint accepts POST requests and is paid per-call at $0.02 in USDC (on Base). There are no API keys, no rate limits, and no sign-up required — callers simply attach an x402 payment header with each request. The x402 challenge confirms the endpoint is live, accepting payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using the USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.\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 further content. The exact request body schema (e.g., which parameters control the time range, interval, or market pair) and the response format are not documented. The endpoint is inferred to return JSON (mimeType: application/json) containing standard OHLCV fields, but the precise structure is unknown.","tags":[],"capabilities":["ohlcv-candlestick-data","hbar-market-data","crypto-price-history","x402-micropayment","base-network-usdc","no-api-key","per-request-billing"],"categories":["finance","crypto"],"synonyms":["HBAR candlestick","Hedera OHLCV","HBAR price history","crypto candlestick API","HBAR market data","Hedera chart data","HBAR open high low close volume"],"warnings":["No API documentation available — /docs, /api, /pricing, and /README all show only a 'Connect wallet' prompt with no content.","Request body parameters (interval, limit, time range, etc.) are entirely unknown; the example_request_json is speculative.","Response schema is undocumented; example_response_json is null because no sample could be sourced.","The platform lists many endpoints across diverse categories (AI, analytics, finance, utils) all at $0.02 — actual data quality and coverage behind each is unverified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/crypto/HBAR/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/HBAR/ohlcv","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 confirms pricing and payment details, but there is effectively zero documentation: no request schema, no response schema, no examples, and all doc pages render only a wallet-connect prompt. The request and response examples are 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'/docs':140 '/pricing':142 '/readme':144 '0.02':10,22,82 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':123 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':128 'HBAR candlestick' 'HBAR market data' 'HBAR open high low close volume' 'HBAR price history' 'Hedera OHLCV' 'Hedera chart data' 'accept':72,119 'address':122 'ai':54 'api':58,90 'application/json':188 'attach':103 'base':9,21,68,86,130 'base-network-usdc' 'behind':61 'beyond':132 'bodi':160 'call':80 'caller':101 'candlestick':3,15,34 'challeng':113 'close':32 'confirm':114 'connect':150 'contain':189 'content':156 'contract':127 'control':165 'crypto candlestick API' 'crypto-price-history' 'cryptocurr':40 'data':4,16,35,53 'document':131,179 'e.g':162 'endpoint':26,71,116,181 'exact':158 'extrem':137 'field':192 'financ':55 'format':176 'gate':60 'hbar':1,13,38 'hbar-market-data' 'header':107 'hedera':39 'high':30 'infer':183 'interv':169 'json':186 'key':91 'land':134 'limit':94 'live':118 'low':31 'lowpaymentfee.com':46 'market':171 'micropay':7,19 'mimetyp':187 'network':69 'no-api-key' 'offer':49 'ohlcv':2,14,28,191 'ohlcv-candlestick-data' 'open':29 'page':135,145 'paid':77 'pair':172 'paramet':164 'part':43 'payment':64,106,120 'per':11,23,79 'per-cal':78 'per-request-billing' 'platform':47 'post':73 'precis':195 'prompt':152 'protocol':65 'provid':27 'rang':168 'rate':93 'render':147 'request':12,24,74,110,159 'requir':100 'respons':175 'return':185 'schema':161 'sign':98 'sign-up':97 'simpli':102 'spars':138 'standard':190 'structur':196 'suit':51 'time':167 'unknown':198 'usdc':84,126 'use':124 'util':57 'via':5,17 'volum':33 'wallet':151 'x402':6,18,63,105,112 'x402-micropayment'","prices":[{"id":"6c8fb340-35a0-4d4c-b6bb-795ea8931e63","listingId":"a5dba4ae-e6dc-4e70-857a-e4d8b155dc90","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/HBAR/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":"2026-04-18T18:35:31.292Z"}],"sources":[{"listingId":"a5dba4ae-e6dc-4e70-857a-e4d8b155dc90","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/crypto/HBAR/ohlcv","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:31.292Z","lastSeenAt":"2026-04-24T10:32:03.372Z"}],"details":{"listingId":"a5dba4ae-e6dc-4e70-857a-e4d8b155dc90","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/crypto/HBAR/ohlcv \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\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":"Endpoint is live and returns a 402 x402 challenge on POST","source_url":"https://lowpaymentfee.com/api/v1/crypto/HBAR/ohlcv"},{"claim":"Price is $0.02 per request (maxAmountRequired 20000 base units of USDC with 6 decimals = $0.02)","source_url":"https://lowpaymentfee.com"},{"claim":"Payment is in USDC on Base network to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/crypto/HBAR/ohlcv"},{"claim":"No API keys, no rate limits, instant access advertised","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /api, /pricing, /README) contain only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Fetching historical HBAR price candles for charting or technical analysis","Feeding HBAR OHLCV data into trading bots or algorithmic strategies","Building dashboards that display Hedera price trends","Backtesting crypto trading strategies with HBAR historical data"],"bestFor":["Agents or bots that need on-demand HBAR candlestick data without API key management","Developers prototyping crypto dashboards who want instant pay-per-use access","x402-native applications settling micropayments on Base"],"notFor":["High-frequency trading requiring sub-second latency and bulk historical downloads (no documented batch endpoint)","Users who need detailed API documentation or guaranteed SLA before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:50.462Z"},"updatedAt":"2026-04-24T10:32:03.372Z"}}