Waiting
The agent asks for a permission or for your input. The project stays in the notch, with the tool it wants to use, until you answer.
Claude Code and Codex in the MacBook notch Know when your agent
needs you.
Claude Code asks for a permission, Codex finishes its turn, while you are in another window. Hollow puts the project in the notch and lights the neon, so you never leave an agent waiting.
7-day free trial, everything unlocked. No credit card.
Three states, at a glance.
Each Claude Code or Codex session shows its project and where it stands.
Your turn
The agent finished its turn. The notch says so for a few seconds, and the neon stays on until you come back to it.
Running
A prompt was sent, or a permission granted: the agent works, and the notch stays quiet.
Every session, in one list.
Open the notch: the agents waiting for you come first, then the finished ones, then the ones still running. Claude Code on one side, Codex on the other, several projects at once. One click on an agent opens its conversation or brings back its terminal.
Set up by Hollow.
Claude Code and Codex tell Hollow what their agents do through hooks. Hollow adds them for you.
1Install Hollow
Download it, drag it to Applications, open it.
2Hollow adds its hooks
To Claude Code and to Codex, after a backup of their settings. Your other settings and hooks stay as they are.
3Work as usual
Codex asks you once to review the new hooks. Then the notch follows your agents, wherever they run.
Questions
Which agents does Hollow show?
Claude Code, in the terminal, your editor or the Claude app, and Codex, in the ChatGPT app or the terminal. You can turn each one on or off in Hollow’s settings.
Do I have to configure anything?
Hollow adds its hooks to Claude Code and Codex by itself, after a backup of their settings. Codex asks you once to review them with /hooks.
Does anything leave my Mac?
No. The agents’ hooks pass their events to Hollow on your Mac. Hollow sends nothing about your sessions online.
Is it included in Hollow?
Agents are part of Hollow Pro, €19.90 once. Already have Hollow? Upgrade for €10 from the app. The 7-day trial includes them.
What do I need?
A Mac with macOS 14 Sonoma or later, and Claude Code or Codex. No notch? Hollow draws one.
More in Hollow
Know when your agent
needs you.
7-day free trial, everything unlocked. No credit card.