Best Financial Data APIs for Supabase

SiftingIO serves as a comprehensive financial market data API designed for developers, fintech teams, analysts, and researchers who are creating applications that require market insights. It offers real-time quotes and continuous updates, alongside historical OHLCV data and reference datasets related to U.S. stocks, forex, cryptocurrencies, commodities, and on-chain markets via both REST and WebSocket interfaces. In addition, users can access a variety of datasets that include company fundamentals, financial statements, SEC filings, economic events, market operating hours, and technical indicators. To facilitate development and research, SiftingIO provides SDKs for Go, Python, and TypeScript, along with interactive API documentation, tools for Excel and Google Sheets, downloadable data exports, and an MCP server. A free tier is available for each market, featuring usage limits, while paid plans are structured based on market type and service tier. Users should note that the coverage and permissible usage may differ by market, plan, and data licensing agreements, ensuring a tailored experience for various projects. This flexibility makes SiftingIO an appealing choice for a wide range of financial data requirements.