The Developer-First Trading API

Build powerful, reliable trading applications with the Aries API. Access real-time market data, execute orders, and manage accounts with our modern, easy-to-use REST and WebSocket APIs.

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Our APIs

Everything you need to build

From executing complex option strategies to streaming real-time market data, our APIs provide the building blocks for your next great fintech application.

Order API

Place, update, cancel, and preview orders for equities and options with our robust REST API.

Market Data API

Stream real-time market data, quotes, and account updates directly to your application.

User API

Manage user authentication, sessions, and account-specific details securely.