We are a GCP Partner and part of the tester program. We recently started building some agents with the Vertex AI Agent builder. We have some data sources that we have been working with. We are trying to use the Slack, Jira Cloud, and Confluence Cloud Third Party Data Sources connectors. I know these connectors are in preview. We are trying to get on the allowlist to work with them in preview for testing purposes. Not sure how we can go about requesting access.