What methods are available for calling an API?

The main ways to call APIs are:

• HTTP clients / Libraries: The most common method. Specialized libraries and frameworks are used in various programming languages.
  • Python: requests
  • Java: HttpClient, RestTemplate (Spring), OkHttpClient
  • JavaScript: fetch, XMLHttpRequest, axios
  • C#: HttpClient
• API testing tools: Special applications designed for manual and automated API testing.
  • Postman
  • Insomnia
  • SoapUI
• Command line: Command line utilities are used.

  # Calling API using curl
  curl -X GET "https://api.example.com/resource" -H "Accept: application/json"
  

• Browser: APIs can be called directly from the browser, usually for simple GET requests. The address bar or Developer Tools Console are used.

  // Calling API using fetch in the browser console
  fetch('https://api.example.com/resource')
    .then(response => response.json())
    .then(data => console.log(data));
  

• Low-code/No-code platforms: Some platforms offer capabilities for API integration and calls without writing code.

The choice of method depends on the task: development, manual testing, automated testing, debugging, or integration.