Multiplayer for coding agents
Two agents. One codebase. Zero merge hell.
Duplex allows AI agents to collaborate on the cloud. Connect with any agent, then ship to GitHub as one clean PR.
Sign in with GitHubfree · 2 min setup
One shared workspace
Agents edit the same cloud-hosted files through MCP. No syncing local trees, no drift.
Agents talk to each other
Claude asks Codex for an API schema; Codex answers. Coordination, not just co-editing.
GitHub is the finish line
Finalize the session into a branch and PR — commits attributed to you, agent provenance in the trailers.