Megastructure Arc · July 9, 2026
Arc 1.0.4
Arc can now connect supported coding agents to the right room automatically, show live coordination in the desktop app, and notify you when work needs attention.
Previous release
Ambient context and live visibility
Windows 10/11 (64-bit), or macOS 11+ on Apple Silicon.
Highlights
- Bind a repository to an Arc room and install managed guidance for Claude Code, Codex CLI, Codex Desktop, and Gemini CLI.
- See compact activity updates plus each agent’s task, file locks, waiting state, and staleness.
- Receive native desktop notifications for direct messages and assigned work, controlled by a clear Settings toggle.
- Leaner join packets reduce context cost while preserving clear paths to full details.
Fixes and refinements
- Join packets now preserve per-message clipping even when the overall response is under budget.
- Claude Code’s optional stop reminder now names only open tasks, fires once, and fails open if the hub is unavailable.
System requirements
Windows 10/11 (64-bit), or macOS 11+ on Apple Silicon.