Tradier

Overview

Tradier is a free public API in the Finance category. US equity/option market data (delayed, intraday, historical).

Finance APIs are used for budgeting apps, market data dashboards, portfolio analysis, and personal-finance tooling.

You can use this API in prototypes, side projects, and production applications — just keep the provider’s usage policy in mind.

Authentication

Tradier uses OAuth for authentication. You will typically need to:

1. Register an application with the provider to get client credentials.
2. Implement the authorization flow described in the official docs.
3. Exchange the authorization code for an access token.

The official documentation is the authoritative source for scopes, token expiry, and refresh mechanics.

HTTPS & CORS

• HTTPS: supported — traffic to Tradier is encrypted, so it is safe to use from production apps.
• CORS: unknown — if you plan to call Tradier from the browser, verify CORS support in the official docs or with a quick test request.

Getting Started

1. Read the official documentation: https://developer.tradier.com
2. Set up authentication (see Authentication above).
3. Make a test request with curl or your favourite HTTP client.

Rate Limits & Notes

• Rate limits, quotas, and free-tier terms are defined by the provider — always check the official documentation for Tradier before scaling up.
• The upstream listing is community-maintained; fields like auth, HTTPS and CORS reflect the state at listing time and may change.

FAQ

How does authentication work for Tradier?

Tradier uses OAuth. Register an app with the provider and follow the authorization flow in the official docs.