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WHMCS API Authentication

We can generate an API Authentication Credentials for an admin user in the Admin section. Each API call requires authentication.

This method of supplying a valid identification and secret combination will also result in successful authentication.

Authentication options available for the WHMCS API

Here’s a rundown of the authentication choices for the API:

API Authentication Tokens: In this authentication technique, an API authentication token is generated within WHMCS and used to authenticate API queries. This is how it works:

To generate an API Authentication Token, follow these steps:

• Go to “Setup” in the top menu of the WHMCS admin section, and then click on “API Credentials.” Click the “Generate New Token” button to create a new authentication token.
• Incorporate the Token into API Requests:

  Include the authentication token as the identification parameter and the accompanying secret key as the secret parameter when performing API calls. These values can be supplied as query parameters or in request headers.

  Token-Authenticated API Request Example:

  vbnet
GET /path/to/api/endpoint
Headers:
- identifier: your_authentication_token
- secret: your_secret_key
• API Basic Authentication: WHMCS also supports Basic Authentication, which allows us to include the API username and password in the request headers. This is how it works:

  Include Username and Password in API queries: Include the API username and password as the Authorization header in the format Basic base64(username:password) when performing API queries.

  Basic Authentication Example API Request

  vbnet
GET /path/to/api/endpoint
  Headers:
  – Authorization: Basic base64(username:password)
• API Access Control IP Restriction: As previously said, we may restrict API access depending on IP addresses. We may improve the security of API endpoints by permitting just particular IP addresses or IP ranges.

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