AI BriefingGitHub Next releases Ace, an open-source multiplayer agentic development tool
·2026.11.09 09:00
Key point
Ace is an MIT-licensed experiment from GitHub Next that lets teams collaborate on code via chat channels where agents run directly on local machines using Tailscale.
Details
- GitHub Next has released Ace, an open-source (MIT licensed) experiment in real-time, multiplayer agentic development that runs on users' own machines rather than a central service.
- The tool enables teams to jam on code in shared channels; agents read the conversation and execute edits, builds, and runs on the host Mac using the user's local toolchain and API keys.
- Architecture relies on Tailscale for peer-to-peer connectivity, with a lightweight 'directory' service deployed by the team (on Cloudflare Workers, Fly.io, or local) to track channel locations without storing content.
- Security model grants agents full user privileges on the host machine, requiring teams to trust each other with local shell access and keep the host gateway on a private tailnet.
- Features include 'lanes' (isolated Git worktrees for parallel work), live app window previews during builds, and optional cloud channels in beta for continuous operation.
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GitHub Next releases Ace, a local collaborative coding environment for humans and AI agents