signalHacker News Show HN2026-10-03
Show HN: Hall Monitor. See all your agents across machines on your Mac's Notch
Hall Monitor is an open-source tool for monitoring Claude Code and Codex agents across local and remote machines, accessible via terminal, menu bar, and the Mac notch. It shows live status, current tool, last prompt, model, context size, subagent count, and usage metrics like agent-hours and tokens. It only reads agent logs, never sends prompts or approvals, and is installed via Homebrew or Go.
- for who
- Developers who run multiple coding agents locally and on remote servers and need a unified view.
- why now
- A new tool for monitoring AI agents across machines just launched.
- what changes
- They can see all agents at a glance, know who needs attention, and jump directly to the relevant session without guessing which terminal or machine.
- to do
- Install Hall Monitor via brew or Go, then run 'hallmonitor' to view the board and use 'hallmonitor --demo' to preview it first.
key points
- Monitors Claude Code and Codex sessions across machines over SSH
- Shows live status, current tool, model, context, subagents, and usage stats
- Menu bar and notch app for macOS 14+, with ~1% CPU usage
#agent monitoring#open source tool#Claude Code#Codex#productivity tool3 sources · confidence medium
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