I am going to explain the Magento 2 login REST API for mobile applications so by using those REST APIs you can develop the application using the Magento 2 e-commerce framework.
So these APIs are basically used for the login system for the customers and admin users. You can take help of these proper rest ways to implement the login functionality.
Magento 2 Login REST API
To access the data of any store of your magento, first of all, you have to define yourself that you are the genuine person accessing that data.
Authentication means you have to prove as a genuine user of customer it admin that allows Magento e-commerce store to identify the access rights. It means you have the right to access (administrator, integration, client, or guest) resources of the API call.
Now if you just want to check some things as a front-end customer then you have to log in customer and for that, you have to get a customer access token.
But if you want to access internal details of the store then for that you must have to authenticate your identity and get an access token of admin details.
Magento 2 Login Rest API Customer
Step 1: You must have a customer account in order to get access tokens of customers. If you don't have a user account then you can create a customer account first.
Step 2: Now you have to send the customer user details like username and password in the payload with the POST method.
Step 3: Get customer access token in response.
API URL: {baseurl}/rest/V1/integration/customer/token
Endpoint:
https://wishusucess.com/rest/V1/integration/customer/token
Method: POST
Authorization: Not required
Body:
{ "username":"cs.hemantsingh@gmail.com", "password":"Admin@#44123" }
Response:
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Admin Login REST API in Magento 2
If any mobile application is developed using Magento eCommerce then at that time we need to login to Magento admin through rest API.
Let us know what is the complete step of admin login via REST API, by following which we can get this access token.
Step 1: You need a Magento store admin account in order to get access tokens of your stores via rest API.
Step 2: Now by hitting the below details you can get the admin access token. Along with the rest API URL you have to send the admin username and password in the payload with the POST method.
Step 3: Get admin access token in response.
API URL: {baseurl}/rest/V1/integration/admin/token
Endpoint:
https://wishusucess.com/rest/V1/integration/admin/token
Method: POST
Header: Not required
Body:
{ "username":"admin32", "password":"Admin555@#123" }
Response:
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Read more: Magento 2.4 Installation Guide: How to Install Magento 2.4.2