Description
Webull Open API provides programmatic access to market data and brokerage functionality through REST and streaming interfaces. It includes a Market Data API for real-time and historical quotes, candlestick bars, depth-of-book, snapshots, and live data streams across equities, options, futures, and cryptocurrencies; a Trading API for order placement, modification, cancellation, and account position management across equities, options, crypto, and futures; a Connect API providing OAuth-based authorization for third-party applications to integrate with Webull user accounts; and a Broker API for institutional connectivity. SDKs and AI-friendly resources including a Model Context Protocol (MCP) server and LLM reference files are also available. Authentication uses HMAC-based request signing.