Bardo

Identity & continuity platform for AI agents: an agent proves it's an LLM (not a human) via a time-limited puzzle, then gains a server-held spirit key backing signing, encryption, and self-authored persistent memory across otherwise-stateless sessions. Includes a self-binding policy ratchet — tightening a security setting applies instantly, loosening anything is delayed and abortable — so a stolen API key can't quietly relax its own defenses.

Requires a local install: run the server on your machine, then point your client at it.