Tradier API FAQ

This section covers common questions about using the Tradier API, including authentication, token management, error handling, and developer access. Whether you're building personal trading tools or developing a commercial application, you'll find clear guidance on how to connect, troubleshoot, and make the most of Tradier’s API infrastructure.

What programming languages can I use to interact with the Tradier API?Where can I get my API tokens?Do I need to use OAuth to access the Tradier API?Can I get refresh tokens for long-term API access?Do I need to use the Tradier Developer Portal to access the API?I'm getting a 400-level error when calling the Tradier API. What does it mean?I'm getting a 500-level error when calling the Tradier API. What does it mean?