Forex API Documentation | Real-Time Data for 2000+ Currency Pairs

Access comprehensive, real-time forex data with a powerful and flexible API designed for developers, traders, and financial applications. The FCS Forex API delivers live exchange rates across 145+ countries and supports over 2,000 currency pairs, sourced from more than 25 live data providers. Whether you're building a trading dashboard, currency converter, or market analysis tool, our API offers accurate, up-to-the-minute pricing, historical data, technical indicators, economic calendars, and advanced analytics—all in an easy-to-integrate JSON format.

From free-tier access for testing to scalable enterprise solutions, the FCS API is engineered for performance, reliability, and speed. With support for multiple programming languages and seamless integration via HTTP requests, it’s never been easier to bring global forex intelligence into your application.

👉 Discover how real-time forex data can power your next financial project.

Core Features of the FCS Forex API

The FCS Forex API goes beyond simple rate retrieval by offering a full suite of financial data endpoints:

Live Exchange Rates: Updated every 30 seconds or faster.
Historical Data: Access price history from 1995 onward (daily+), or granular 1-minute data for the past 6 months.
Technical Analysis Tools: Moving averages (SMA/EMA), pivot points, RSI, MACD, and other key indicators.
Market Signals: Buy/sell sentiment based on aggregated technical models.
Economic Calendar: Real-time global economic events with forecast, actual, and previous values.
Currency Conversion & Base Pricing: Convert between currencies or view all quotes based on a single base currency.
Search & Multi-Request Support: Find currencies by name and fetch multiple endpoints in one call.

This makes it ideal for algorithmic trading systems, fintech apps, investment platforms, and market research tools.

Core Keywords: Forex API, real-time forex data, currency exchange API, historical exchange rates, technical indicators API, economic calendar API, currency conversion API, financial data API

Getting Started with API Access

To begin using the FCS Forex API, you need an access key, which authenticates your requests. This unique key is passed as a parameter in every API URL.

Authentication Format

https://fcsapi.com/api-v3/forex/{endpoint}/?access_key=YOUR_ACCESS_KEY

Replace YOUR_ACCESS_KEY with your actual key obtained from your dashboard. All responses are delivered in lightweight JSON format, making parsing simple across any platform or language.

Supported integrations include:

PHP (cURL or file_get_contents)
JavaScript (AJAX/Fetch)
Android (HttpURLConnection)
Java, C# (.NET HttpWebRequest)
Command-line tools like curl

No SDKs required—just standard HTTP calls.

👉 Start integrating live forex data into your app today.

Understanding API Credit Usage

Each account operates on a credit-based system. The Basic Plan allows 10,000 requests per month, with credits resetting on your billing date.

How Credits Are Counted

Most endpoints: 1 credit per request (if response status is 200 and returns data).
Some data-heavy endpoints count per record volume:
- Latest Price, Candle, and Profile APIs: 1 credit per 100 records returned (rounded up).
- Historical Data API: 1 credit per 300 candles returned.
- Economic Calendar API: 1 credit per 50 events returned.
Requests returning errors or empty results do not consume credits.

You can monitor your usage anytime through the user dashboard.

Supported Currency Symbols and ID Management

To ensure accuracy and consistency, use standardized currency symbols or numeric IDs when querying the API.

Retrieve Full Symbol List

Use the /list endpoint to get all supported forex and crypto pairs:

https://fcsapi.com/api-v3/forex/list?access_key=API_KEY&type=forex

Response Includes:

id: Unique identifier
name: Full currency pair name (e.g., "Euro US Dollar")
symbol: Trading symbol (e.g., "EUR/USD")
decimal: Decimal precision

This list powers all other API calls—use either id or symbol parameters depending on your integration needs.

Fetching Real-Time Currency Rates

Stay ahead with up-to-date forex pricing using the Latest Price API, updated every 30 seconds or less.

Request Examples

By symbol:

https://fcsapi.com/api-v3/forex/latest?symbol=EUR/USD,USD/JPY&access_key=API_KEY

By ID:

https://fcsapi.com/api-v3/forex/latest?id=1,2,3&access_key=API_KEY

For all pairs at once:

https://fcsapi.com/api-v3/forex/latest?symbol=all_forex&access_key=API_KEY

Response Data

Each result includes:

Open (o), High (h), Low (l), Close (c) prices
Change (ch) and percentage change (cp)
Last update time (t, Unix timestamp; tm, human-readable)

Perfect for dashboards, trading alerts, or real-time conversion tools.

Currency Conversion Made Simple

Convert amounts between any two currencies instantly using the Currency Converter API.

Example Request

https://fcsapi.com/api-v3/forex/converter?symbol=EUR/USD&amount=200&access_key=API_KEY

Or specify base and quote separately:

https://fcsapi.com/api-v3/forex/converter?pair1=EUR&pair2=USD&amount=200&access_key=API_KEY

Output Includes:

Exchange rate for 1 unit of each currency
Total converted value (total)

Ideal for e-commerce platforms, travel apps, or multi-currency wallets.

Historical Price Data for Market Analysis

Analyze trends and backtest strategies using detailed historical exchange rate data.

Key Parameters

from, to: Date range in YYYY-MM-DD format
period: Time intervals from 1m to month
level: Control number of candles (up to 900)

Sample Call

https://fcsapi.com/api-v3/forex/history?symbol=EUR/USD&from=2025-01-04&to=2025-07-04&period=1d&access_key=API_KEY

Omitting from and to returns the latest 900 candles automatically—ideal for quick chart loading.

Data includes open, high, low, close, volume (v), and timestamps—perfect for candlestick charts and technical modeling.

Technical Indicators and Market Signals

Enhance decision-making with automated technical analysis powered by real-time data.

Available Tools:

Moving Averages (SMA/EMA): For trend identification
Pivot Points: Identify support/resistance levels
RSI, MACD, Stochastic, CCI, ATR: Momentum and volatility indicators

Each endpoint calculates values based on the last 300 candles and includes buy/sell signals where applicable.

These tools help automate trade signals, validate entry points, or build custom indicators in trading algorithms.

Frequently Asked Questions (FAQ)

What is the refresh rate for live forex prices?

Live prices are updated every 30 seconds or faster. For high-frequency use cases requiring sub-second updates, consider polling the Latest Price or Candle APIs more frequently within your plan limits.

Can I get data for both forex and cryptocurrencies?

Yes. Use the type=forex or type=crypto parameter to filter results. For example, setting symbol=USD&type=crypto returns crypto pairs like USD/BTC or USD/ETH.

Is historical data available before 2025?

Yes. Daily and higher timeframe historical data is available starting from 1995 for most currency pairs. Granular data (1-minute, 5-minute) is available for up to six months back.

How accurate is the technical indicator data?

Indicators are calculated using standard financial formulas applied to real market data. However, they are intended for educational or analytical purposes—not guaranteed trading signals. Always verify with primary sources before making trades.

Does the API support batch requests?

Yes. Use the Multi URL API to send several requests in parallel under one call. This reduces latency significantly—e.g., fetching 10 endpoints in ~2 seconds instead of 20+ seconds sequentially.

Are there usage restrictions on free plans?

Free plans include limited monthly credits and may have rate limits. Paid plans offer higher quotas, faster response times, and access to premium features like extended history and advanced signals.

👉 Unlock advanced forex insights with a powerful data platform.

Advanced Use Cases: Building Financial Intelligence

Beyond basic rate fetching, the FCS API enables sophisticated applications:

Automated Trading Bots: Combine real-time prices with moving averages and RSI signals to trigger entries.
Risk Management Dashboards: Monitor currency exposure using base conversion and volatility metrics.
Market Research Platforms: Correlate economic calendar events with price movements.
Mobile Finance Apps: Offer users instant conversions and trend visualizations.

With consistent JSON outputs and clear documentation, developers can rapidly prototype and deploy globally aware financial tools.

Final Thoughts

The FCS Forex API delivers a robust foundation for accessing real-time and historical foreign exchange data at scale. Its wide range of endpoints—from live pricing to technical analysis—makes it a go-to solution for developers building next-generation fintech products.

Whether you're testing a proof of concept or deploying a production-grade trading engine, the flexibility, accuracy, and ease of integration make this API a valuable asset in today’s fast-moving markets.

Always remember: while the data is highly accurate, it is provided for informational purposes and should not be solely relied upon for live trading without additional validation.