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NEW: Prediction Markets API

One REST API for all prediction markets data
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Live and Historical FX Data for Fiat & Crypto

Get accurate exchange rates from global FX and crypto markets. Delivered through high-performance REST, WebSocket, and JSON-RPC protocols.
Get API KeySee Pricing
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190+
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Fiat and cryptocurrency assets supported
99.99
%
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SLA uptime across all endpoints
50+
TB
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Historical currency data available
4
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Integration methods

Real-Time & Historical Exchange Rates for Crypto and Forex

Get exchange rates for fiat and crypto assets calculated from real activity across many verified markets. The prices come from a 24-hour volume-weighted average, updated every second, and cleaned from unreliable or outdated data. We use only legitimate spot markets, remove abnormal quotes, and rely on midpoint prices and trade volume to build accurate values. When several markets are available, the API also uses cross-asset paths to show the most representative rate. You can access both live and historical data through REST, WebSocket, or JSON-RPC. The API supports single pairs, all pairs for one base asset, and full timeseries for deeper analysis.
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What data will you get:

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Single-Pair Exchange Rates
Real-time and historical rates for any base/quote asset pair.
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All Rates for One Asset
Current exchange rates between one base asset and all other supported assets.
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Historical Timeseries
Full price history for any pair with selectable periods from seconds to days.
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Supported Time Periods
Complete list of available intervals for timeseries requests.
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Asset Directory
All fiat and crypto assets with identifiers, metadata, and icons.
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Live WebSocket Stream
Continuous rate updates every second, including timestamps and rate types.

MCP support for simple integration

FinFeedAPI supports the Model Context Protocol (MCP), an open standard that makes our financial data easy for AI systems to understand and use.

This gives LLMs, agents, and automated tools direct access to stock, FX, prediction market, and SEC data without manual integration work.

Other benefits include:

  • AI-ready data: AI models can use FinFeedAPI data right away — no extra tools or special setup
  • One place to access everything: All FinFeedAPI products use the same MCP protocol.
  • Fewer mistakes: Clear data schemas help catch errors early, making your AI tools more stable
  • Automatic Updates: New data and endpoints show up instantly in your AI tools. No code changes needed.

With the Currencies API developers can:

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Cut integration time with one structure for all data
Real-time, all-pairs, and historical data all follow the same pattern.
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Avoid low-quality or misleading prices
Bad spreads, stale quotes, and non-spot markets are filtered out.
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Build reliable products with consistent outputs
Endpoints use stable naming and uniform response formats.
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Stream pricing without connection headaches
Heartbeat and reconnect messages keep the WebSocket feed stable.
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Reduce asset-mapping issues
All asset IDs, categories, and icons come from one directory.
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Choose the access method that fits their system
REST, WebSocket, and JSON-RPC all work out of the box.

Use cases

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Use case: E-commerce

Customers abandon their carts when prices feel inconsistent, unclear, or unexpectedly high after currency conversion. For e-commerce platforms, brands, and payment providers, having access to reliable exchange rate data is essential for transparent pricing, fair transactions, and international growth.

Learn how we solved that
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