We encourage all developers to make sure that their Slack apps are Enterprise Grid ready. Use this form to request Grid sandboxes so that you can be sure. We'll provide you with two separate Grid sandboxes that you can use to test shared channels and other Grid features.

If you are interested in building a security or compliance solution like eDiscovery or Data Loss Prevention, you'll need access to our Discovery API. To get that access, you'll first need to complete our partner onboarding. You can start that process at https://slack.com/partners/contact. We review those requests on a quarterly basis, based on customer interest.