How to use Bearer Token for Authentication Web API?

To use a Bearer token for authentication in a web API, follow these steps:

Obtain the Token: The client must authenticate with an authorization server (often using OAuth 2.0) to receive a Bearer token. This usually involves exchanging credentials (e.g., username and password) for a token.

Include the Token in Requests: Once the client has the token, it must be sent in the HTTP request's Authorization header in the following format:

Authorization: Bearer <token>

Send the Request: The client sends the request with the Bearer token to the web API.

Server Validates the Token: The API server verifies the token's validity, checking if it is correct, unexpired, and authorized to access the requested resource.

Access Granted: If the token is valid, the server processes the request and grants access to the resource. If not, a 401 Unauthorized response is returned.

Bearer tokens are widely used in APIs to provide secure and stateless authentication.