Crypto Data APIs

Crypto Data APIs

Real-time and historical data in one ecosystem.

CoinAPI provides real-time and historical cryptocurrency market data from 400+ integrated exchanges, covering more than 18,000 digital assets, 916,000+ symbols, and over 678 TB of historical market data. Access live market streams, historical archives, exchange rates, and benchmark indexes through one normalized platform.

Unlike providers that specialize in either live feeds or historical archives, CoinAPI combines both into a single ecosystem. The same normalized identifiers, symbols, exchanges, and data model are used across every product, making it easy to move from research and backtesting to live production without rebuilding your integration.

One normalized platform, at scale

400+Integrated Exchanges
18,000+Digital Assets
916,000+Symbols
678 TB+Historical Market Data

One Platform. Multiple Ways to Access Crypto Market Data.

Every CoinAPI product is built on the same normalized market data platform. The difference isn't the underlying data model: it's how the data is delivered, how quickly it is needed, and what workflow it supports.

Some applications need the latest Bitcoin price every few seconds. Others require continuous market streams with millisecond latency. Quantitative researchers may need years of historical trades, while AI teams often work with hundreds of terabytes of offline datasets.

Instead of maintaining separate providers for each workflow, CoinAPI lets you access the same underlying market data through the interface that best matches your application.

Match the Product to Your Need

NeedRecommended Product
Latest market prices and historical queriesREST Market Data API
Continuous real-time streamingWebSocket API
Lowest-latency exchange feedsWebSocket DS
Multi-year historical datasetsFlat Files
Crypto and fiat conversion ratesExchange Rates API
Benchmark and reference pricesIndexes API
Order execution and smart routingEMS Trading API
Private enterprise exchange connectivityExchange Link

Because every product uses the same standardized assets, symbols, timestamps, and schemas, teams can combine multiple services without introducing additional normalization or integration work.

What's Included

What's Included in CoinAPI?

CoinAPI is a platform of specialized products that work together to provide every layer of cryptocurrency market infrastructure. Each product focuses on a different type of data or workflow while using consistent identifiers and schemas across the platform.

ProductWhat It ProvidesAvailable Through
Market Data APITrades, quotes, order books, OHLCV, metadataREST, WebSocket, WebSocket DS, FIX
Flat FilesBulk historical trades, quotes, order books, OHLCV datasetsS3-compatible Flat Files API
Exchange Rates APIReal-time and historical crypto-to-crypto and crypto-to-fiat exchange ratesREST, WebSocket
Indexes APIReal-time and historical benchmark indexes and reference pricesREST, WebSocket
EMS Trading APIOrders, balances, positions, executions, Smart Order RoutingWebSocket, FIX
Exchange LinkPrivate exchange connectivity and managed integrationsEnterprise connectivity
Real-Time vs. Historical

Two Datasets, Built From the Same Market Activity

Real-time and historical datasets are built from the same underlying market activity, but each is optimized for a different workflow.

AspectReal-Time Crypto DataHistorical Crypto Data
Optimized forLow-latency deliveryConsistency, completeness, and reproducibility
Primary purposeLive trading, monitoring, automation, and pricingResearch, backtesting, AI, reporting, and analytics
DeliveryContinuous streaming or on-demand requestsOn-demand queries or bulk downloads
Typical environmentProduction applicationsQuantitative research and data science
Available throughREST API, WebSocket, WebSocket DS, FIXREST API, Flat Files, Enterprise delivery

Why They Differ

Real-time market data is optimized to deliver market events with the lowest possible latency.

Historical datasets are optimized for reproducible research and institutional-grade analysis.

After the trading day closes, historical processing may include:

  • Normalization across exchanges
  • Duplicate removal
  • Timestamp validation
  • Out-of-order message reconciliation
  • Late-arriving data handling
  • Exchange-side corrections where available
  • Symbol and asset mapping
  • Additional quality assurance checks

As a result, finalized historical datasets are designed for quantitative research, AI training, audits, and long-term analytics, while real-time feeds prioritize delivering market events as quickly as possible.

Although the two datasets are extremely close, real-time and finalized historical data should not always be expected to match bit-for-bit in every edge case.

The best delivery method depends on your workflow, not on the data itself.
Comparing Delivery Methods

Comparing Market Data Delivery Methods

Although the underlying datasets are largely the same, each delivery method is optimized for different workloads.

DatasetREST APIWebSocketFlat Files API
OHLCVQuery historical candles by symbol or exchange with periods from 1 second to 5 years.Continuous OHLCV updates as new market activity changes the current candle.Bulk OHLCV datasets for consolidated markets and individual exchanges with 1SEC, 1MIN, 1HRS, and 1DAY intervals.
TradesRetrieve historical or latest trades for specific markets.Continuous live trade streams.Complete historical trade archives optimized for large-scale analysis.
QuotesRetrieve historical or latest bid and ask quotes.Continuous quote updates.Complete historical quote archives for offline processing.
Order BooksHistorical order book snapshots with configurable depth (up to 20 levels).Streaming market depth with snapshots and continuous updates, subject to source exchange capabilities and available depth.Complete tick-by-tick historical order book updates for full market replay and liquidity analysis.

Order books are event-driven, not interval-based. Updates are published whenever the source exchange sends a book change. Highly active markets may generate thousands of updates per second, while less active markets naturally produce fewer updates.

CoinAPI market data feeds are exchange-specific. Trades, quotes, and order books are delivered per exchange and instrument. Aggregated pricing across venues is provided separately through the Exchange Rates API and Indexes API.

Historical Data at Scale with Flat Files

REST APIs are ideal for targeted historical queries, but downloading years of tick-level market data one request at a time quickly becomes inefficient.

CoinAPI Flat Files are designed specifically for large-scale historical research, quantitative analysis, AI training, and market replay.

Datasets are delivered as compressed CSV files through an S3-compatible API and organized into predictable directory structures by dataset type, trading symbol, and UTC trading day. This makes them easy to process using Python, Snowflake, and modern data engineering pipelines.

Flat Files are the preferred choice for:

  • Multi-year historical datasets
  • Tick-by-tick trade history
  • Historical bid and ask quotes
  • Complete order book updates
  • Large-scale backtesting
  • Market replay
  • AI and machine learning training
  • Data warehouses and data lakes

Instead of making millions of REST requests, researchers can download complete datasets once and analyze them locally using the tools that best fit their workflow.

Development Lifecycle

Built for the Entire Development Lifecycle

Most cryptocurrency applications rely on more than one delivery method. A quantitative trading strategy might begin with years of historical market data, move into paper trading with live market streams, and eventually become a production trading system powered by real-time data and execution infrastructure.

StageTypical WorkflowCoinAPI Products
ResearchAnalyze markets, explore ideasREST API, Flat Files
BacktestingValidate strategies using historical dataFlat Files, REST API
DevelopmentTest models against live marketsREST API, WebSocket
ProductionPower live applications and trading systemsWebSocket, WebSocket DS, Exchange Rates API, EMS
ReportingPortfolio valuation and benchmarkingExchange Rates API, Indexes API

Because every product shares the same normalized identifiers, assets, symbols, exchanges, and schemas, teams can move between these stages without rebuilding their integration or translating datasets.

Reliable Infrastructure for 24/7 Crypto Markets

Cryptocurrency markets never close, and market data infrastructure must be available around the clock. CoinAPI is built for always-on digital asset markets with globally distributed infrastructure, persistent streaming services, and enterprise connectivity options.

Whether you're powering a trading platform, quantitative research pipeline, or institutional data service, CoinAPI is designed to deliver reliable market data whenever your applications need it.

Infrastructure capabilities include

  • Redundant global infrastructure
  • Distributed failover architecture
  • Persistent streaming connections
  • Public system status page
  • Priority enterprise support
  • Dedicated SLAs
  • Private networking options for enterprise deployments
Crypto Data APIs

Build on a Complete Crypto Market Data Platform

Modern cryptocurrency applications rarely depend on a single dataset or delivery method. From real-time trades and ultra-low-latency market streams to historical Flat Files, institutional benchmark indexes, exchange rates, execution infrastructure, and enterprise connectivity, CoinAPI provides every building block needed to develop, deploy, and scale modern cryptocurrency applications.

Start with a free CoinAPI API key to explore the platform, or contact our team to discuss enterprise deployments, dedicated infrastructure, and large-scale historical data requirements.