OAuth 2.0 is an authorization framework that enables applications to obtain limited access to user accounts on an HTTP service. It allows third-party clients to access protected resources on behalf of a user.

Overview

  • Authorization Code Grant: This grant type is used when the client is trusted and can securely store the authorization code.
  • Implicit Grant: This grant type is used when the client is not trusted or cannot securely store the authorization code.
  • Resource Owner Password Credentials Grant: This grant type is used when the client has the resource owner's credentials (username and password).
  • Client Credentials Grant: This grant type is used when the client is acting on its own behalf.

Prerequisites

Before using the OAuth 2.0 API, you need to:

  • Register your application with the authorization server.
  • Obtain the necessary credentials (client ID and client secret).

Usage

To use the OAuth 2.0 API, follow these steps:

  1. Redirect the user to the authorization server's authorization endpoint.
  2. The user will be prompted to log in and authorize your application.
  3. After authorization, the user will be redirected back to your application with an authorization code.
  4. Exchange the authorization code for an access token.

Example

Here's an example of how to use the OAuth 2.0 API to obtain an access token:

const axios = require('axios');

const url = 'https://example.com/oauth2/token';
const params = {
  grant_type: 'authorization_code',
  client_id: 'your-client-id',
  client_secret: 'your-client-secret',
  code: 'your-authorization-code'
};

axios.post(url, params)
  .then(response => {
    console.log('Access Token:', response.data.access_token);
  })
  .catch(error => {
    console.error('Error:', error);
  });

For more detailed information, please refer to the OAuth 2.0 Authorization Framework.

Next Steps

OAuth 2.0