# Practical Tool
# Postman API Application Example
# Postman Introduction
Postman is an API development tool which helps to build, test and modify APIs.
Download：postman (opens new window)
# Postman API Interface
# Import Procedure
- Download and import Linkus_API.json (opens new window)
- Set environment variables.
- Interface call.
# Environment Setup
Postman Environments Setup in Postman Environments
| Environment Variable | Description | Note |
|---|---|---|
| host | Domain Name | https://www.linkusapi.com |
| token | For Authentication | |
| Required for Login | ||
| password | Password | Required for Login |