What are the Top 4 authentications used for APIs?

Application Programming Interface (API) the vital links that allow applications to exchange services and data — require authentication before the exchange can take place. If a client application tries to access another application, the target API wants to know: Is the client really the client it claims to be?

Authentication is used to detect who you are?

It helps to identify the client by using a authentication protocol. This protocol sends the credentials from client to server in plain or encrypted text. The server then decides to grant access to client or not.

Common API Authentications

Basic Authentication

Basic authentication is a simple, HTTP-based authentication scheme that allows clients to authenticate with a server by sending a username and password in plain text as part of the HTTP request.

When a client makes a request to a server that requires basic authentication, the server responds with a 401 Unauthorised status code, which indicates that authentication is required. The response also includes a WWW-Authenticate header…