{"uid":"cap_z2uAKImEPwq4uWOotE0Nw","slug":"fastapi-online-klines-ohlcv-candlestick-data-d1513c3f","name":"fastapi.online — Klines (OHLCV Candlestick Data)","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/klines?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"symbol":{"type":"string"},"interval":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TdRDEaG5n8u0gtIUlWcPI","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns OHLCV candlestick (kline) data for a given trading symbol and interval","exampleAgentPrompt":"Can you fetch the 1-hour candlestick data for BTCUSDT so I can see the recent OHLCV price action?","exampleUseCases":[{"title":"Crypto trading signal analysis","prompt":"Pull the last set of 15-minute klines for ETHUSDT so I can check whether there's a bullish crossover forming."},{"title":"Portfolio price tracking dashboard","prompt":"Get me the daily candlestick data for SOLUSDT so I can chart the open, high, low, and close prices over recent days."},{"title":"Automated trading bot data feed","prompt":"Fetch the 1-minute OHLCV kline data for BNBUSDT — I need it to feed into my trading algorithm for the next decision cycle."}],"resultDescription":"Returns a series of OHLCV (Open, High, Low, Close, Volume) candlestick records for the requested symbol and interval, suitable for charting, technical analysis, or algorithmic trading strategies.","failureModes":["Invalid or unsupported symbol returns an error or empty response","Unsupported interval string causes a validation error","Payment not included or insufficient USDC results in 402 Payment Required","Rate limiting or server unavailability may return 5xx errors","Malformed request body (missing required fields) returns 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need raw OHLCV candlestick market data for a crypto trading pair, especially in a pay-per-call context with no signup required. Useful for agents doing technical analysis, backtesting signals, or powering trading dashboards without a persistent API subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:48:57.687Z","isFirstParty":false,"canonicalSlug":"fastapi-online-klines-ohlcv-candlestick-data-d1513c3f"}