Client-To-Server

📄️ Create Client Token

Generates an access token and refresh token pair for end-user applications to directly access Webull services. This endpoint must be called from your institution's backend service with valid AK/SK credentials. The access token authorizes API calls, while the refresh token enables token renewal. Creating a new token pair for an existing customer immediately invalidates any previously issued tokens for that customer. • Access token expires in approximately 2 hours (may vary slightly) • Refresh token expires in 15 days • Frequency limit: Rate limit 600 requests per minute • **Note**: This access_token is used to access Market Data API

📄️ Refresh Client Token

Obtains a new access token and refresh token pair using a valid refresh token. This endpoint requires AK/SK signature authentication from your institution's backend service. Both the refresh token and request signature are validated before issuing new credentials. The old tokens will be invalidated after successful refresh. • Access token expires in approximately 2 hours (may vary slightly) • Refresh token expires in 15 days • Frequency limit: Rate limit 600 requests per minute • **Note**: This access_token is used to access Market Data API