Getting started

c6s uses separate security boundaries. Installing an app is not account creation, signing in is not device enrollment, and authentication never unlocks the vault.

1. Get beta access

Apply for the private beta. Applying records a contact request; it does not create an account. If you already have an invitation, use Console signup.

2. Install the trusted device app

Install Cerberus on an iPhone running iOS 17 or later through TestFlight. TestFlight availability depends on the current build and tester capacity.

3. Install the CLI

Install the public Apple Silicon macOS beta through the official Homebrew Formula or standalone installer. Follow the checksum-verified CLI installation.

4. Verify the local client

c6s version
c6s device status
c6s protocol verify

The current private-beta CLI can create local device keys and inspect public protocol fixtures. Vault sync, approval, and action execution must not be assumed available until their documented release gate is complete.

5. Connect an agent only when needed

Use c6s mcp as a profile-pinned local stdio server. It never reveals secret values or approves requests. An agent may prepare an exact immutable request and, only after a trusted device approves it, invoke the separately destructive tool that consumes its short-lived one-time grant.