JWT Tokens in Express and NodeJS

The JSON Web Token (JWT) is the easiest standard for protecting APIs and passing in claims data. A JSON Web token allows the server to verify the authenticity of the user and provide them access to protected API routes and data.  A simple JWT flow goes as follows: The user sends login credentials to the server The server verifies user against the database then returns a JWT token if valid The user sends that token in the header with every request to API.