Centaur is an open-source, self-hosted runtime for multiplayer AI agents that integrates primarily with Slack and APIs, designed for persistent, auditable, and secure organization-wide use.

It provides per-thread sandboxed containers, shared tools and skills, and a service-based architecture (Slackbot, FastAPI control plane, Postgres state, sandbox, firewall, observability) with credential injection via a proxy so agents never see raw secrets. The system is extensible through company-specific overlays, Markdown-based skills, and auto-discovered Python tool plugins that become immediately available to all agent sessions.