Read docs Updated 2026-06-16
What is CoinAPI?
CoinAPI is a service that integrates all currency exchanges under a single API.
It is useful for applications that need to connect to multiple exchanges without separate integrations.
What you can build with CoinAPI
Build a live crypto price dashboard
Aggregate spot prices from dozens of exchanges into a single real-time view for traders monitoring BTC, ETH and altcoins.
Power a portfolio tracker
Pull historical OHLCV and order-book snapshots to calculate user holdings performance across multiple venues.
Detect cross-exchange arbitrage
Compare bid/ask spreads from different exchanges in one request to surface short-lived price discrepancies.
Get started with CoinAPI
- 1Create a free account at coinapi.io
- 2Generate an API key in the developer dashboard
- 3Read the REST or WebSocket endpoint reference
- 4Send HTTPS requests with the API key in the X-CoinAPI-Key header
- 5Parse the returned JSON for exchange rates and metadata
CoinAPI: pros & cons
Pros
- +Single endpoint for 100+ exchanges
- +Consistent data schema across sources
- +HTTPS encryption by default
- +API key authentication for access control
Cons
- –Free tier has strict rate limits
- –Advanced historical data requires paid plans
- –Crypto-only; no traditional forex or stocks
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Frequently asked questions
A unified API that aggregates cryptocurrency market data from many exchanges into one interface.
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