Single Sign On with JSON Web Token

Written By Diego Selzlein (Administrator)

Updated at May 20th, 2020

Helpjuice supports authenticating users via Single Sign On with JWT. It works like this:

  1. The user chooses to authenticate through SSO
  2. Helpjuice redirects the user to your website where they can authenticate with user / password
  3. Your website generates a JSON Web Token using the shared key Helpjuice provides and redirects the user with the token back to Helpjuice
  4. Helpjuice decodes the token and authenticate the user with the email you provided
  5. If the user is a new one, we will create a new user account for him

To set it up, go to your account Settings > Single Sign On with JWT

Then fill in the form:

JWT Fields

These are the fields that Helpjuice will use from your JSON Web Token:

Field Required? Description
jti yes This field contains an unique token ID generated by your website. Helpjuice will use it to prevent replay attacks.
iat yes This field has to contain the token creation time in milliseconds since Unix epoch. Helpjuice will only accept tokens up to 3 minutes old.
email yes The authenticated user's email so Helpjuice can identify the user.
first_name no The user's first name.
last_name no The user's last name

In order to debug issues with your token, use It provides a tool to parse your token and show you if it's using the right layout.

Signing Users In

When Helpjuice redirects a user to your login page, it will append a parameter to the URL called service and set it to helpjuice, like: This may be useful for you to identify the service and properly configure the authentication token layout.

Upon successful authentication, you need to sign the generated token with the Shared Secret Helpjuice provides you in that Settings page. Then you need to redirect them to

Signing Users Out

After signing a user out, Helpjuice will redirect them to the Logout URL you provided (if present).

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