CARDINAL
Personal intelligence system
V3 foundation

Your second brain,in one conversation.

Cardinal remembers what matters, organizes the work around you, and turns natural conversation into deliberate action—without hiding what it knows or what it changed.

1Conversation that continues

Threads keep their context, decisions, and action history instead of resetting every session.

2A second brain with provenance

Memory, Obsidian, research, and project context stay connected and visibly sourced.

3Actions you can trust

Workflows show receipts, confidence, approvals, and what Cardinal actually changed.

Local-first by designApproval-gated actionsOwner-only workspace

Private workspace

Welcome back

Secure

Sign in with the owner account configured for this Cardinal instance. Public registration and magic-link access are disabled.

Supabase owner account
First-time access setup+

Create or update the owner in Supabase Authentication → Users, then use the same address for CARDINAL_SINGLE_USER_EMAIL.

Home
Converse
Brain
Remember
Automate
Act