REST API Integration with Postman

I need a REST API integrated into my website using Postman. The API provides user authentication, data retrieval, and forms submission capabilities, and uses API Key for authentication.

Key Requirements:
- Integrate REST API for specified functionalities.
- Use Postman for setup and testing.
- API Key authentication

Ideal Skills:
- Experience with REST APIs
- Proficiency in Postman
- Familiarity with API Key authentication
- Web development skills for integration