Slack Slack is a messaging app for businesses that connects people to the information they need. It's used by teams of all sizes to communicate, collaborate, and share files in a central workspace. Official docs: https://api.slack.com/ Slack Overview - Channel - Message - User Use action names and parameters as needed. Working with Slack This skill uses the Membrane CLI to interact with Slack. Membrane handles authentication and credentials refresh automatically — so you can focus on the integration logic rather than auth plumbing. Install the CLI Install the Membrane CLI so you can run from…