POST Request with JSON in Postman: 3 Examples

Learn how to send POST requests with JSON data in Postman through these practical examples.
By Jamie

Introduction

Sending a POST request with JSON data is a common task when working with APIs. Postman, a popular tool for testing APIs, makes it easy to send requests and inspect responses. In this article, we’ll explore three diverse and practical examples of sending POST requests with JSON data in Postman. Each example will highlight a different use case to help you understand the versatility of this tool.

Example 1: Creating a New User in a User Management API

In this example, we’ll demonstrate how to create a new user in a hypothetical user management system. This is a common scenario where you need to send user details to an API to register a new user.

To create a new user, set up a POST request in Postman with the following details:

  • Method: POST
  • URL: https://api.example.com/users
  • Headers:
    • Content-Type: application/json

In the body of the request, include the JSON data representing the user:

{
  "username": "jdoe",
  "password": "securepassword123",
  "email": "jdoe@example.com"
}

When you send this request, the API should respond with a success message and the details of the newly created user, including a unique user ID.

Notes:

  • Ensure the API allows user creation and check the required fields in the API documentation.
  • You can use Postman’s environment variables to store sensitive information like passwords.

Example 2: Submitting a Support Ticket

This example illustrates how to submit a support ticket through an API. Organizations often need a way for users to report issues, and this scenario demonstrates that process.

To submit a support ticket, configure your POST request in Postman as follows:

  • Method: POST
  • URL: https://api.example.com/support/tickets
  • Headers:
    • Content-Type: application/json

The body of your request should include the ticket details in JSON format:

{
  "title": "Unable to access my account",
  "description": "I forgot my password and can't reset it.",
  "priority": "high",
  "user_id": "12345"
}

Upon sending the request, the API should return a confirmation that the ticket has been created, along with a ticket ID for tracking purposes.

Variations:

  • Change the priority level in the JSON to see how the system handles different urgency levels.
  • Experiment with adding additional fields, such as attachments or tags, if supported by the API.

Example 3: Updating Product Information in an E-commerce API

In this example, we’ll update the information for a product in an e-commerce platform. This is useful for managing product listings and keeping information up-to-date.

Set up your POST request in Postman with these details:

  • Method: POST
  • URL: https://api.example.com/products/update
  • Headers:
    • Content-Type: application/json

The JSON body should contain the product ID and the updated information:

{
  "product_id": "56789",
  "name": "Updated Product Name",
  "price": 29.99,
  "stock": 50
}

After sending the request, you should receive a response indicating that the product details have been successfully updated.

Important Notes:

  • Make sure you have the necessary permissions to update product information.
  • Check the API documentation for any specific requirements regarding the fields you can update.