# fastFOREX.io Developer Documentation

> Real-time Secure JSON API for 160+ World Currencies, 500+ Cryptocurrencies, and 2,300+ FX Trading Pairs. Trusted by 30,000+ Developers worldwide.

## Docs

- [API Usage Metrics](https://www.fastforex.io/docs/api-reference/admin/usage.md): Fetch recent API usage data. Includes current period start, end, usage and quota remaining
- [List Cryptocurrencies](https://www.fastforex.io/docs/api-reference/crypto/currencies.md): Fetch a list of 500+ supported cryptocurrencies
- [Live Crypto Prices](https://www.fastforex.io/docs/api-reference/crypto/fetch-prices.md): Fetch one or more (up to 10) real-time prices for supported cryptocurrency pairs
- [List Crypto Pairs](https://www.fastforex.io/docs/api-reference/crypto/pairs.md): Fetch a list of 400+ supported cryptocurrency pairs
- [Convert an Amount of Currency or Cryptocurrency](https://www.fastforex.io/docs/api-reference/currency/convert.md): Convert an amount of one currency into another currency (supports physical and digital currencies)
- [List Currencies](https://www.fastforex.io/docs/api-reference/currency/currencies.md): Fetch a list of 160+ supported currencies with symbols. Also see /crypto/currencies
- [Fetch All Exchange Rates](https://www.fastforex.io/docs/api-reference/currency/fetch-all.md): Fetch all available currency rates for the supplied source currency. Midpoint spot rates.
- [Exchange Rates, Many-to-One](https://www.fastforex.io/docs/api-reference/currency/fetch-many-to-one.md): Fetch a set of many source currency rates to a single target currency (inverse of /fetch-multi). Midpoint spot rates. Costs one API call per pair returned.
- [Exchange Rate Matrix](https://www.fastforex.io/docs/api-reference/currency/fetch-matrix.md): Fetch a matrix of multiple from/to currency pairs. Midpoint spot rates. Costs one API call per pair returned.
- [Multiple Exchange Rates](https://www.fastforex.io/docs/api-reference/currency/fetch-multi.md): Fetch multiple target exchange rates from a single source currency. Midpoint spot rates.
- [Exchange Rate](https://www.fastforex.io/docs/api-reference/currency/fetch-one.md): Fetch a single currency exchange rate, from and to any supported physical or digital currency. Midpoint spot rate.
- [Historical Exchange Rates](https://www.fastforex.io/docs/api-reference/currency/historical.md): Fetch midpoint currency exchange rates for a date in the past
- [Exchange Rate Time-Series](https://www.fastforex.io/docs/api-reference/currency/time-series.md): Fetch a time-series dataset of daily currency exchange rates for the specified interval (only daily supported currently). See our FX quote & OHLC time-series endpoints for more granular data.
- [List FX Currencies](https://www.fastforex.io/docs/api-reference/fx/currencies.md): List of supported trading pair currency symbols and descriptions
- [FX Pairs Historical Limits](https://www.fastforex.io/docs/api-reference/fx/historical-limits.md): FX pairs earliest available historical data point for the supplied interval (P1D default)
- [FX OHLC Time-Series](https://www.fastforex.io/docs/api-reference/fx/ohlc-time-series.md): Fetch a set of OHLC time-series data points for a given FX trading pair and interval. Values are based on the BID price. Supports a range of datetime formats and timezone offsets. Datetime format in the response will try to match your request - unless specified explicitly.
- [List FX Pairs](https://www.fastforex.io/docs/api-reference/fx/pairs.md): List approx 2,300 supported FX pairs
- [Real-time FX bid/ask quote](https://www.fastforex.io/docs/api-reference/fx/quote.md): Live bid & ask quote for 1 or more (up to 10 in a single request) FX trading pairs.
- [FX Pair Quote Sizes](https://www.fastforex.io/docs/api-reference/fx/quote-sizes.md): List of FX trading pairs with non-standard quote sizes
- [FX Quote Time-Series](https://www.fastforex.io/docs/api-reference/fx/quote-time-series.md): bid/ask time-series data for a given FX trading pair and interval. Values are the closing bid/ask for the interval. Supports a range of datetime formats and timezone offsets. Datetime format in the response will try to match your request - unless specified explicitly.
- [Find us on GitHub](https://www.fastforex.io/docs/github.md): Frontmatter is the metadata that controls how your page appears and behaves
- [Introduction](https://www.fastforex.io/docs/index.md): Real-time currency data API for 160+ currencies, 500+ crypto, 2,300+ FX pairs. Fast, simple, reliable.
- [MCP Server](https://www.fastforex.io/docs/mcp-server.md): MCP Server for Realtime and Historical Currency Data
- [WebSockets](https://www.fastforex.io/docs/websockets.md): Realtime streaming bid/ask prices for ~2,300 FX trading pairs via a secure WebSocket connection.

## OpenAPI Specs

- [openapi](https://www.fastforex.io/docs/openapi.yaml)