Quick Start with API

📌 Register an Account

🎁 Registration Bonus

New users will receive $0.2 free credit to get started

Minimum top-up amount is only $10

🔗 Register here: Click to register

⚙️ Configuration Steps

Step 1: Get an API Token

Go to the "API Token" page

Click "Create new token" to receive your API Key

Step 2: Configure the API Address

Available BASE_URL addresses:

https://api.key4u.shop
https://api.key4u.shop/v1
https://api.key4u.shop/v1/chat/completions

https://api2.key4u.shop
https://api2.key4u.shop/v1
https://api2.key4u.shop/v1/chat/completions

// Use for alias issues (e.g. calling model "claude-sonnet-4-5" will be redirected to the latest model "claude-sonnet-4-5-20250929")
https://api3.key4u.shop
https://api3.key4u.shop/v1
https://api3.key4u.shop/v1/chat/completions

🔔 Note: Depending on the type of application or tool (Postman, cURL, programming libraries, etc.), you may need to try each address above to determine the correct endpoint.

Step 3: Select a Model

The list of models is available on the homepage under "Supported Model List", located in the first column

✅ Verify Configuration

You can verify your configuration in 2 ways:

Use the chat interface on the website to test responses

Use an API tool such as Postman or cURL to send requests

Sample Configuration Example

{
  "base_url": "https://api.key4u.shop",
  "api_key": "your_token_here",
  "model": "selected_model_name"
}

💡 Tip: It is recommended to test the configuration using the online chat interface first to make sure everything is correct, before integrating it into your system or application.

📌 Register an Account#

🎁 Registration Bonus#

⚙️ Configuration Steps#

Step 1: Get an API Token#

Step 2: Configure the API Address#

Available BASE_URL addresses:#

Step 3: Select a Model#

✅ Verify Configuration#

Sample Configuration Example#