Finance — entry 043 of 47
Tradier
Tradier's brokerage API exposes US equity and options order execution, account management, and both REST and WebSocket market-data streaming, gated behind a free Tradier brokerage account (a paper-trading sandbox is included) rather than a separate API fee. Real-time data and unlimited equity trades are reserved for funded accounts and the optional $10/month Pro plan; the sandbox otherwise defaults to the industry-standard 15-minute-delayed quotes. A live probe of the real API host (api.tradier.com) returned `Access-Control-Allow-Origin: *`, re-confirming the previously-recorded CORS support.
AuthenticationOAuthRequires an OAuth flow; expect app registration.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSON, WebSocketResponses can be requested as JSON or WebSocket.
GreatAPIs Score
Score74
Authentication8/25OAuth flow required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats15/15Supports 2 response formats
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/tradier/"><img src="https://greatapis.com/badge/tradier.svg" alt="Scored 74 on greatapis.com"></a>Auth quickstart
- Register an app / run the OAuth flow to obtain a bearer token.
- Send it as an Authorization header
Authorization: Bearer <token>
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.