Real-Time & Historical Exchange Rates for Crypto and Forex
Get high-performance currency data from crypto markets and traditional FX. Delivered through REST, WebSocket, and institutional-grade FIX APIs.
190+
Fiat and cryptocurrency assets supported
99.99
%
SLA uptime across all endpoints
50+
TB
Historical currency data available
4
Integration methods
What you get
Real-Time Exchange Rates
Receive currency rate updates every 100 milliseconds via WebSocket or FIX. Includes bid, ask, mid, and VWAP prices.
Historical Exchange Rates
Query historical FX and crypto data with configurable time intervals (from 1 second to 1 day), returned in OHLC or VWAP format.
Multiple Access Methods
Available via REST API, WebSocket for live streams, FIX for institutional trading systems, and JSON-RPC for custom workflows.
Crypto and Forex Market Coverage
Supports over 190 assets across fiat currencies, cryptocurrencies, and stablecoins. Aggregated from major exchanges and forex providers.
Standards-Based API Design
Consistent endpoints, ISO 8601 timestamps, millisecond precision, and support for HTTP/1.1, HTTP/2, HTTP/3, and WebSocket.
Authentication Options
Use API Key (header, query, or path), JWT tokens, or Basic Auth. Multiple methods supported for flexibility in secure environments.
MCP Compability
Plug the API directly into AI applications with almost no effort.
Why this is the best choice for developers
Detailed Documentation and SDKs
Get up and running quickly with full API reference, usage examples, and SDKs for Python, JavaScript, Go, and more.
Consistent, Predictable Interfaces
Clean, versioned endpoints with consistent naming, standardized response formats, and clear error codes.
Protocol Flexibility
Supports HTTP/1.1, HTTP/2, HTTP/3, WebSocket, and FIX — suitable for everything from browser apps to institutional systems.
Unified Access to Historical and Real-Time Data
Query both historical and live exchange rates through a single API structure, reducing integration complexity.
Transparent, High-Quality Data
All prices are calculated using a proprietary algorithm with 3-sigma outlier filtering and 24H VWAP from verified exchanges.
Efficient Data Delivery
Streaming endpoints include heartbeat messages, efficient reconnect strategies, and low-latency data optimized for trading platforms.
FAQ
What assets are supported by the Currencies API?
What protocols and formats are available?
How current is the real-time exchange rate data?
How is the exchange rate calculated?
How is authentication handled?
Can I access both real-time and historical data through the same API?
What kind of historical data is available?
Do you provide SDKs?
Is Currencies API suitable for production trading systems?
What data formats are supported for API responses?
Can I filter the list of assets or exchange rates?
What are the available time periods for historical timeseries data?
MCP compability for seamless data integration
FinFeedAPI supports the Model Context Protocol (MCP), an open specification that makes our financial data APIs machine-readable. This allows AI models, autonomous agents, and next-generation crypto apps to programmatically discover and integrate our data with little to no custom code.
Key benefits for users include:
- Easy AI Integration: Directly connect FinFeedAPI data to large language models (LLMs) and AI agents.
- Simplified Development: Access all FinFeedAPI services through a single, unified MCP endpoint, eliminating the need for custom wrappers.
- Increased Reliability: Schema-level validation catches errors and ensures more robust integrations.
- Future-Proof Design: New services and endpoints are automatically discovered by your applications without requiring client-side updates.
Built by the Team behind CoinAPI
We've served billions of crypto API requests. Now we're bringing that same reliability and simplicity to stock market and currency exchange data. One clean API. All the data you need. Nothing you don't.
Historical stock prices
Data on 11K+ companies with unlimited historical data loopback period.
Real time & historical currency prices
Access up-to-date and historical pricing between fiat and crypto assets with a single request.
SEC filings
Clean, structured, and timely SEC filing data spanning over 30 years of corporate activity.
REST API
Stateless API providing the widest range of data.
WebSocket API
Real-time updates about currency prices for applications that need continuous data feeds, such as trading platforms or live dashboards.
FIX API
High-speed protocol for real-time financial data exchange between liquidity providers, traders, and regulators.
MCP Compability
Plug our APIs directly into AI applications with almost no effort.
Custom integrations
Integrate our stock data API with your project, regardless of its size, tech stack and architecture.
Docs & SDK
Best in class documentation allowing you to connect our API in minutes.
Start free, scale as you grow. Our pricing is based on what developers actually need - simple API calls without the enterprise overhead.
Pay As You Go
Perfect for early-stage projects and variable usage patterns
Metered
monthly
- $25.00 Free Credits
- Historical & Real-time Data
- REST Protocol
- WebSocket Protocol
- Volume Discounts
- Email Support
Growth
Predictable pricing for growing applications
$249
monthly
- All from PAY AS YOU GO package
- 10k Rates/Day
- 99.9% Uptime SLA
- Dedicated Slack Channel
Pro
More possibilities for more ambitious projects
$599
monthly
- All from Growth Package
- 100k Rates/Day
- Dedicated Customer Manager
- Premium Support
Business
Big data for big projects.
$1256
monthly
- All from PRO Package
- 1M Rates/Day
- Integration Assistance
- New Asset Requests
- Data Backfilling Requests
Enterprise
Custom packages with dedicated support, SLA guarantees, and advanced features
Custom
monthly
- All features of lower packages
- Custom limits & quotas
- Project tailored SLAs
- Premium 24/7 support
- Latency SLA
- Bundle options with other FinFeedAPI and CoinAPI products
Compare plans and features
Pay As You Go
Growth
Pro
Business
Enterprise
Protocols
REST API
MCP API
JSON-RPC API
WebSocket API
FIX API
-
-
-
-
Included Usage
Rates
-
Data Availability
Real-Time Data
Historical Data
Support & Services
Support
Uptime SLA
-
Latency SLA
-
-
-
-
Support & Services
Dedicated Customer Manager
-
-
Integration Assistance
-
-
-
New Asset Requests
-
-
-
Data Backfilling Requests
-
-
-
Dedicated Infrastructure
-
-
-
-
Dedicated Interconnects
VPC Peering, Direct Connects, Cross Connects
-
-
-
-
Dedicated Slack Channel
$200/m
Features/Endpoints
Reference Data (Assets)
Exchange Rates
Fiat to Fiat Rates
Fiat to Crypto Rates
Crypto to Crypto Rates
Min Update Frequency
Historical Data Lookback
Transparent, scalable, usage-based pricing
Rates Usage
Rates are prices of exchange rate; either downloaded via REST API or received via WebSocket API. Rate is always a single price for the specific asset pair. One REST API endpoint can deliver multiple prices for the same or multiple asset pairs. Single OHLCV message for specific timestamp having multiple prices in a single message but it's billed as one rate as all the rates (open, high, low, close) are related to the same symbol. Historical OHLCV or timeseries data for specific asset pairs on 1DAY intervals for a year will be billed as 365 rates.
Pricing is tiered based on your daily usage:
- Calculated per 100 rates
- Tiers reset daily
- Rates decrease as usage increases
- Usage covered by the committed-usage plan quota is counted
Higher volume users automatically benefit from lower rates. See the table below for specific pricing tiers.
Example 1 - Pay As You Go
- Let's say you will fetch 250 rates in one day
- The first 100 rates will be priced at $0.50
- The next 100 rates will be priced at $0.40
- The final 50 rates will be priced at $0.30
- The total cost will be $1.20
Example 2 - PRO with Pay As You Go
- Let's say you will use 150,000 rates in one day while having active PRO subscription
- The PRO plan has a limit of 100,00 rates / day.
- The first 100,000 rates will not be charged as they are within the plan quota.
- The final 50,000 rates will be priced at $0.25 / 1k rates = $12.50
- The total cost for this day will be $12.50 on top of the PRO subscription
Example 3 - Growth with REST API and WebSocket connections
- Let's say that every 10 seconds you send a request to the REST API for BTC/USD and ETH/EUR. Additionally, you have two WebSocket connections with which you fetch “LTC/EUR” at an interval of 150ms. How to calculate your usage?
- REST API: 6*60*24*2= 17280 rates
Explanation: 6*60*24 (6 times every minute for 24 hours), 2 (you ask about two trading pairs) - WebSocket: 24 * 60 * 60 * 1000 / 150 * 1 * 2 = 1,152,000
Explanation: 24 * 60 * 60 * 1000 (number of milliseconds in a day), 150 (update interval), 1 (one trading pair), 2 (two connections) - The final rate usage will be 1169280 (1,152,000 + 17280)
Rates usage
Price
First 100 rates / day
$0.50 / 100 rates
101-200 rates / day
$0.40 / 100 rates
201-300 rates / day
$0.30 / 100 rates
301-400 rates / day
$0.20 / 100 rates
401-1000 rates / day
$0.10 / 100 rates
1001-10000 rates / day
$0.50 / 1k rates
10 001-100 000 rates / day
$0.25 / 1k rates
More than 100k rates / day
$0.10 / 1k rates
Frequently Asked Questions
What payment methods are accepted for subscription plans?
How will I be invoiced?
Can I pay by invoice?
Do I need a credit card to get started?
What happens if my payment fails?
How can I obtain usage credits?
Can I receive refund for my credits?
Do my usage credits expire?
What is the difference between standard and premium support?
How is the pricing for the Enterprise plan determined?
Can I switch between plans as my needs change?
Can I test the API before committing to a paid plan?
What is an API request and how many requests are available under my plan?
What happens if I go over my plan's API call limit?
Is there a discount for annual payment?
What are the exchange rates in crypto?
What are the exchange rates in traditional currencies?
What affects cryptocurrency exchange rates?
What affects traditional currency exchange rates?
Why do exchange rates differ between platforms?
What are some common use cases of exchange rate data?
What are the data delivery methods?
Is historical exchange rate data available?
Need advice? Get in touch with our experts
Let's Chat!
Not sure if our solutions solve your problem? We'd be happy to check it.
Need help choosing? Our sales team is ready to help you select the right product and plan that best suits your business's needs.
Looking for a quote on an enterprise plan? Request an estimate today.
We’re ready to address all your questions and concerns. Submit a form and we will get back to you right away! Request an estimate today.
Great tool for any market sector
How we can help you
Algorithmic Trading Development and Backtesting
Build and test trading algorithms against complete historical data. Analyze order flow dynamics with nanosecond precision. Develop market-making strategies with full order book visibility.
Risk Management Solutions
Analyze historical market conditions to improve risk models. Study past auction imbalances, short sale restrictions, and trading halts. Research market behavior during circuit breaker events.
Academic and Research Purposes
Analyze market microstructure with detailed order book data. Study price formation processes and market impact. Research trading patterns and order flow dynamics.
Market Surveillance and Compliance
Backtest surveillance algorithms against complete data sets. Analyze historical short sale price tests and restrictions. Validate best execution requirements against historical markets.
Trading Strategy Optimization
Test strategies against complete historical market conditions. Benchmark performance against unfiltered market data. Optimize execution algorithms with full order book history.
Online Marketplaces
Empower global commerce with accurate, real-time currency data for buyers, sellers, and transactions across borders.
Smarter Financial Products
Whether you're offering cross-border payments, multi-currency accounts, or investment analytics, FinFeedAPI provides the accurate and up-to-date currency data you need to stay ahead in a highly competitive market.
Trade & Supply Chain
Real-time and historical currency data that powers global payments, procurement, and reporting.
Is your industry not on the list?
FinFeedAPI delivers real value across industries, helping developers build powerful apps, marketers create data-backed campaigns, analysts uncover insights, and traders make smarter decisions.
Our products works for diverse business needs at a price point that makes sense for companies of all sizes.
No matter your finances and data requirements, you can be up and running quickly without a huge investment.
