Room for one more session?

Eranthis tells you from the menu bar whether this Mac can take another Claude Code session or build.

Free · macOS 15 Sequoia or later · Apple silicon and Intel

Each session, with what it started

Metro, tests, builds and MCP servers under the session that ran them. One that keeps growing gets a Restart; claude --resume picks it up.

What closed sessions left behind

Processes still running after their session ended, quit in one go. Anything you started yourself is left alone.

Claude asks before it builds

The same light from the command line. Add the hook and a session checks before a heavy job; on Wait or Stop the job is held and Claude is told why. Exit 0 is Go, 1 is Wait, 2 is Stop.

$ eranthis check
go: room for another session or build   (exit 0)

# ~/.claude/settings.json
{
  "hooks": {
    "PreToolUse": [{
      "matcher": "Bash",
      "hooks": [{ "type": "command", "command": "eranthis check --hook" }]
    }]
  }
}

Eranthis

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Download for Mac

macOS 15 Sequoia or later · Apple silicon and Intel

Memory pressure, as macOS reports it
Swapping to disk
Load against your cores
Sessions against your cap
One heavy job at a time
Free disk for a build
Merged worktrees, to remove
What closed sessions left running