For the CodeStream Gitlab integration, you'll need to create a new Application in your gitlab account to provide access to the Gitlab API.

Login to Gitlab and Go to the Applications page

Login to gitlab, click the dropdown under your user icon in the upper right and select Settings.

The select Applications on the left nav bar to expose the New Application form.

New App

Create the Application

Complete the form pictured above. Make sure you check the api scope, and optionally, the Confidential scope. The redirect URL should reference your company's CodeStream On-Prem hostname with this path:

When you're done, click the Save application button.

Update the CodeStream Config and Restart

After you create the application, click on it in the list to expose the application ID and secret.

AppID and Secret

Then update your codestream config file, ~/.codestream/codestream-services-config.json, by adding the following section.

	"integrations": {
		"gitlab": {
			"cloud": {
				"appClientId": "-- App ID goes here --",
				"appClientSecret": "-- Secret goes here --"

After you make that change, restart CodeStream

~/.codestream/codestream --restart

Instruct your users to Reload their IDEs. They should now be able to connect to Gitlab.