Coinlayer
Real-time cryptocurrency exchange rates via API key over HTTPS.
Read docs Updated 2026-06-16
What is Coinlayer?
Coinlayer is an API service that supplies real-time cryptocurrency exchange rates.
It is useful for finance applications and developers requiring current crypto currency data.
What you can build with Coinlayer
Live crypto price dashboard
Fetch current exchange rates to display real-time prices for multiple coins in a web or mobile dashboard.
Portfolio value calculator
Integrate rates into an app that converts user-held crypto amounts to fiat values using live data.
Trading alert system
Poll the API to trigger notifications when specific cryptocurrency pairs hit target exchange rates.
Get started with Coinlayer
- 1Sign up on the Coinlayer site and obtain an API key
- 2Read the endpoint documentation for supported currencies and parameters
- 3Build a GET request to the rates endpoint including your API key
- 4Parse the returned JSON to extract exchange rate values
- 5Add error handling for invalid keys or rate-limit responses
Coinlayer: pros & cons
Pros
- +Real-time crypto exchange rates
- +API key authentication
- +HTTPS encryption by default
- +Simple integration for finance apps
Cons
- –API key required for all access
- –No historical data mentioned
- –Usage limits likely apply on free plans
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An API that delivers real-time cryptocurrency exchange rates.
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