{"id":"9ed2df24-3c2d-4d7d-83a9-a25e84013c84","shortId":"w5ecyg","kind":"x402","title":"Bitcoin OHLCV candlestick data via x402 micropayment on Base, $0.02 per request.","tagline":"Bitcoin OHLCV candlestick data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides Bitcoin (BTC) OHLCV (Open, High, Low, Close, Volume) candlestick data, accessible through the x402 payment protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The endpoint accepts POST requests and returns JSON.\n\nThe endpoint is part of a broader suite of APIs offered by lowpaymentfee.com spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced uniformly at $0.02 per call. Payment is handled inline via the x402 protocol: callers attach an X-PAYMENT header with a signed USDC payment on Base, and the server fulfills the request upon verification.\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., timeframe, date range). The OHLCV endpoint is not even listed on the provider's landing page — the landing page lists other crypto endpoints like /crypto/quotes and /crypto/gas but not /crypto/BTC/ohlcv. The endpoint is confirmed live (returns a valid 402 x402 challenge), but without documentation the exact request format and response shape must be guessed.","tags":[],"capabilities":["btc-ohlcv","crypto-market-data","candlestick-data","x402-payment","usdc-base","micropayment-api","no-api-key"],"categories":["finance","crypto"],"synonyms":["bitcoin candlestick","BTC OHLCV","bitcoin price history","crypto candles","bitcoin open high low close volume","BTC market data"],"warnings":["No API documentation available — docs, API, pricing, and README pages all return only a 'Connect wallet' prompt with no content.","The /api/v1/crypto/BTC/ohlcv endpoint is not listed on the provider's landing page; its existence is confirmed only by the 402 challenge.","No OpenAPI or output schema provided; request parameters and response format are unknown.","Example request JSON is inferred/guessed and may not match the actual accepted format."],"endpointUrl":"https://lowpaymentfee.com/api/v1/crypto/BTC/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/BTC/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 via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation, no request/response examples, and the specific endpoint is not even listed on the provider's landing page. Nearly all request parameters and response structure must be 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'/crypto/gas':197 '/crypto/quotes':195 '0.02':10,22,47,100 '402':209 'BTC OHLCV' 'BTC market data' 'accept':66,168 'access':38 'ai':88 'analyt':87 'api':55,81,140 'attach':112 'base':9,21,52,124 'bitcoin':1,13,28 'bitcoin candlestick' 'bitcoin open high low close volume' 'bitcoin price history' 'broader':78 'btc':29 'btc-ohlcv' 'call':102 'caller':111 'candlestick':3,15,36 'candlestick-data' 'challeng':211 'close':34 'confirm':204 'connect':149 'content':155 'cost':46 'crawl':138 'crypto':192 'crypto candles' 'crypto-market-data' 'data':4,16,37,86 'date':172 'descript':166 'doc':139 'document':133,214 'e.g':170 'endpoint':26,65,73,176,193,202 'even':179 'exact':216 'exampl':163 'extrem':135 'financ':91 'format':218 'fulfil':128 'guess':224 'handl':105 'header':117 'high':32 'infrastructur':94 'inlin':106 'json':71 'key':56 'land':185,188 'learn':90 'like':194 'limit':59 'list':180,190 'live':205 'low':33 'lowpaymentfee.com':84 'machin':89 'micropay':7,19 'micropayment-api' 'must':222 'network':53 'no-api-key' 'offer':82 'ohlcv':2,14,30,175 'open':31 'openapi':159 'page':144,186,189 'paramet':169 'part':75 'payment':42,103,116,122 'per':11,23,101 'post':67 'price':97,141 'prompt':151 'protocol':43,110 'provid':27,183 'rang':173 'rate':58 'readm':143 'request':12,24,45,68,130,217 'request/response':162 'requir':63 'respons':220 'return':70,146,206 'schema':160 'server':127 'shape':221 'sign':120 'span':85 'spars':136 'subscript':62 'suit':79 'timefram':171 'uniform':98 'upon':131 'usdc':49,121 'usdc-base' 'util':95 'valid':208 'verif':132 'via':5,17,107 'volum':35 'wallet':150 'web3':92 'without':213 'x':115 'x-payment':114 'x402':6,18,41,109,210 'x402-payment'","prices":[{"id":"f08167a5-2cec-4f98-8941-df758c38aada","listingId":"9ed2df24-3c2d-4d7d-83a9-a25e84013c84","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/BTC/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":"2026-04-18T18:34:22.126Z"}],"sources":[{"listingId":"9ed2df24-3c2d-4d7d-83a9-a25e84013c84","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/crypto/BTC/ohlcv","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:22.126Z","lastSeenAt":"2026-04-23T20:01:31.315Z"}],"details":{"listingId":"9ed2df24-3c2d-4d7d-83a9-a25e84013c84","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/crypto/BTC/ohlcv \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{\"timeframe\": \"1d\", \"limit\": 30}'","exampleRequest":{"limit":30,"timeframe":"1d"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC (0x8335…) on Base, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/crypto/BTC/ohlcv"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The landing page lists /api/v1/crypto/quotes and /api/v1/crypto/gas but does not list /api/v1/crypto/BTC/ohlcv.","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages returned only 'Connect wallet' with no further documentation content.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Fetching historical Bitcoin OHLCV candlestick data for charting or backtesting","Integrating real-time BTC price data into trading bots or dashboards","Agent-driven market analysis workflows that pay per query with no subscription"],"bestFor":["Developers needing on-demand BTC candlestick data without API key management","AI agents that can settle micropayments on Base via x402","Low-volume or sporadic crypto data consumers who prefer pay-per-call pricing"],"notFor":["High-frequency trading requiring sub-second latency and bulk data (no documented bulk endpoints)","Users who need detailed API documentation or guaranteed SLA before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:53:28.373Z"},"updatedAt":"2026-04-23T20:01:31.315Z"}}