Ace: GitHub Next's realtime multiplayer coding agent workspace for team alignment in agentic development
In early 2026, all coding agents are single-player experiences, but software development requires team alignment on what to build and why. As agents compress implementation time to minutes, existing coordination tools — GitHub, Slack, Jira, Linear — are not designed for the speed and volume of agentic work, making alignment the new bottleneck.
How it works
Common implementation structure
How this type of workflow is generally built, generalized across documented cases — not tied to any one vendor's stack. Click any stage to read what happens there. Specific products that implement these stages appear in “Tools commonly seen” below.
Stage 1 · Session with shared cloud computer
A session is created as a multiplayer chat backed by a microVM — a sandboxed cloud computer on its own git branch.
Tools used
AcemicroVMOpus 4.6VS Codebun
Outcome
Ace is a research prototype entering technical preview that gives teams a shared multiplayer workspace — multiplayer chat, cloud-hosted microVMs, and shared coding agents — so planning and alignment happen continuously alongside implementation.
What failed first
Current tools surface alignment checkpoints at the PR stage — after implementation — rather than before it. Agent plan modes are unshared with teammates, and the result is merge conflicts from multiple agents touching the same files, duplicated work, and giant PR stacks with no context.