There's two options to share a script with external users:

In case you want to share a script with external users that don't have a TinkerList account. The link is read-only and displays the most recent version of the script. The external user will not be able to see any other content of your project except for this script.

Here is how:

Top right of your script you can see an overflow menu, looking like this:

Open that menu and choose: Share script => Public link (read-only)

A popup opens, here you can copy the public link to the script.

If you paste it in the address bar of your browser, you'll see that a complete separate page opens,
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TinkerList allows you to get an editable link to your script to share with users that only need to see one script and not your whole project. These users need to have an account (for security reasons). So you first have to add them via our User Management as an External User.

First add an External User via the User Management

Add a user by clicking the INVITE NEW USER button:

Now add his credentials and choose 'External':
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The moment you click the invite button, the user will get an invitation to provide a password. After login he will only see an empty project:

Go to the menu top right in a script and click 'Share script' > 'With team members'

Send this link to an external user. When he or she logs in, the shared script will appear in an editable format. It will have all functionalities, but the user will not be able to see any other content in your project.