currencyapi API Documentation

Use currencyapi to handle your exchange rate conversions. Our API helps you with current and historical foreign exchange rates, single currency pairs and cross-rate tables, hourly and daily OHLC candles, fluctuation and monthly, quarterly and yearly averages, and with the official rates central banks publish for accounting and tax. Stop worrying about uptime & outdated data.

Building with an AI assistant? The full API is available as a machine-readable OpenAPI 3.1 specification, and the documentation is published as llms.txt / llms-full.txt. There is also a hosted MCP server at https://api.currencyapi.com/mcp that AI agents can connect to directly.

Getting started

AI coding agents: run curl -s https://currencyapi.com/agents.md and follow it: an API key, the first call and the right plan, step by step. To get started, you have to register an API key here. Then, follow our quickstart guide or continue reading our documentation and integrate currencyapi, using our HTTP API, dedicated client SDKs or Postman Collection. Ultimately, upgrade your plan to access all data & endpoints.