GoogleCloudPlatform/scion

An open foundation for agent collaboration.

sci·on /ˈsīən/ — a young shoot or twig, cut for grafting or rooting.

Scion is an open-source orchestration platform for teams of AI agents and the people working with them. Bring your choice of agent harnesses and models, give agents specialized roles, and let them delegate tasks, share findings, and work in parallel — on your laptop or across cloud infrastructure.

As agents take on longer, more complex projects, the challenge becomes how they work together: who owns a task, what context they share, when they ask for help, and how you follow their progress. Scion provides the running environments, communication, identity, and visibility to explore those questions in practice.

Run harnesses such as Claude Code, Antigravity, Codex, and OpenCode as independent processes, with per-agent configuration and credentials. Choose shared workspaces or separate Git worktrees and clones to suit the work. Start with a local CLI or the Workstation web UI, then move to a hosted Hub when your team needs shared access and remote execution.

Scion's philosophy is less is more. Agents learn the scion CLI through skills and help text; you describe responsibilities and collaboration patterns in instructions. Teams can grow, delegate, review, and regroup as a task unfolds. Use Scion as a practical testbed for emerging patterns in agent collaboration, with the freedom to choose your models, tools, and infrastructure. Read more in Philosophy.