SiftingIO

About SiftingIO

SiftingIO is a market data API providing real-time and historical pricing across US equities, forex, cryptocurrency, commodities, and decentralized finance (DEX and on-chain) markets. Data is delivered over REST and WebSocket under a single credential and normalized into one consistent schema across asset classes. Coverage includes quotes, trades, fundamentals, and corporate actions for US-listed stocks, ETFs, and ADRs; major, minor, and exotic forex pairs; tick-level and OHLCV data for major and mid-cap cryptocurrencies aggregated across venues; swap-level DEX and liquidity pool data across Ethereum, Layer 2s, and Solana; spot and reference pricing for metals, energy, and agricultural commodities; and on-chain fundamentals such as TVL, supply, and holder counts.

The service offers official client libraries for Go, Python, and JavaScript, as well as a raw REST API and WebSocket streaming. It provides integration guides for tools including MetaTrader, n8n, and Supabase, and supports FIX in addition to REST and WebSocket. Free tools are available without an account, including a market-hours checker covering 23 markets, a symbol catalog, and an embeddable live market-status widget.

SiftingIO is aimed at developers building applications that require market data, including quantitative research, fintech, treasury, and dashboard use cases. It offers a free tier with REST and WebSocket access that does not require a credit card, along with a paid pricing structure and an education program providing free and discounted access for academic research, classrooms, and student projects. Custom dataset requests are available, with enterprise customers able to sponsor coverage for markets or asset classes not yet supported.

Key features

• Real-time and historical data for US equities, forex, crypto, and commodities
• DEX and on-chain data across Ethereum, major Layer 2s, and Solana
• REST and WebSocket delivery with one credential across all feeds
• Official SDKs for Go, Python, and JavaScript
• Integrations with MetaTrader, n8n, and Supabase
• Free tools including a market-hours checker, symbol catalog, and live market-status widget

Frequently asked questions