What is an API?

An API (Application Programming Interface) is a "bridge" for communication between different software, allowing programs to call functions or access data from other programs through predefined rules—without needing to understand underlying details.

Core Functions

• Function Reuse：Avoid redundant development.
• Data Sharing：Open partial functions to external users.

Common Types

• REST API：Based on HTTP, with a simple interface.
• SOAP API：Based on XML, with high security.

Workflow

• The client sends a request.
• The server processes and verifies permissions.
• Data is returned.

Key Elements

• API Key：Authenticates identity to prevent unauthorized calls.
• Request Methods：Such as GET (retrieve data) and POST (submit data).
• Data Formats：Commonly JSON/XML.

How to Create a KTX Account API?

• Visit the KTX website via browser and log in to your personal account.
• Click the profile icon at the top-right corner, select API Management, and enter the creation and management page.

• Click the Create API button at the top-right corner, and a pop-up window will appear.

• Based on your usage needs, choose to either fix an authorized trusted IP address or impose no IP restrictions.
• Set the corresponding API name.
• Enter the account's Google verification code to complete authentication.

The API key is successfully created.