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Creating Requests in Postman

? Creating Requests in Postman

? Quick Overview

Postman is a popular API testing tool used to create, send, and analyze HTTP requests. Creating requests in Postman involves defining the request URL, selecting the HTTP method, adding headers or body data, and sending the request to a server to receive a response.

? Key Concepts

  • Request URL – Endpoint where the API is hosted
  • HTTP Methods – GET, POST, PUT, DELETE, PATCH
  • Headers – Metadata sent with requests
  • Body – Data sent to the server
  • Response – Output returned by the server

? Syntax / Theory

In Postman, a request is built by choosing an HTTP method, entering the API endpoint URL, optionally adding headers and body data, and then clicking the Send button. Each request simulates how a client communicates with a server.

? Code Example(s)

? View Code Example 
// Example of a GET request URL used in Postman
https://jsonplaceholder.typicode.com/posts/1
? View Code Example 
// Example JSON body for a POST request in Postman
{
"title": "Postman Test",
"body": "Creating requests in Postman",
"userId": 1
}

? Live Output / Explanation

Response Explanation

After clicking Send, Postman displays the server response including status code, response time, headers, and response body. For a successful request, a 200 OK or 201 Created status code is usually returned.

? Interactive Example

Try switching between different HTTP methods (GET, POST, PUT, DELETE) in the simulator below to see how a Postman-like request works.

// Click 'Send' to simulate a request...

? Use Cases

  • Testing REST APIs during development
  • Debugging backend endpoints
  • Learning and exploring third-party APIs
  • Automating API test workflows

? Tips & Best Practices

  • Always verify the correct HTTP method before sending a request
  • Use environment variables for base URLs
  • Organize requests using collections
  • Check status codes to confirm request success

? Try It Yourself

  • Create a GET request to fetch all posts from a public API
  • Send a POST request with JSON body data
  • Modify headers such as Content-Type
  • Observe changes in server responses