spawn-agent

Spawn AI agents in tmux windows for interactive, parallel work. Use this for fan-out workflows where you want multiple agents working simultaneously.

Usage

code

/spawn-agent <session:window> <agent> [directory] [prompt]

Arguments

•<session:window>: tmux target (e.g., chaos:review)
•<agent>: The agent to spawn (claude, codex)
•[directory]: Working directory (default: current)
•[prompt]: Initial prompt for the agent

Instructions

When this skill is invoked, perform these steps:

1. Validate environment

Run: test -n "$TMUX" && echo "in-tmux" || echo "not-in-tmux"

If not in tmux, report error and stop:

Error: Not running inside tmux. This skill requires a tmux session.

2. Spawn the agent

Run the agent-spawn.sh script:

bash

~/.codex/skills/spawn-agent/scripts/agent-spawn.sh <session:window> <agent> [directory] [prompt]

3. Report success

Tell the user:

•The tmux window name and session
•How to switch to it: Ctrl-b <window-number> or tmux select-window -t <name>

Examples

bash

# Spawn Claude to review code
/spawn-agent chaos:review claude ./project "Review the auth module"

# Spawn Codex for a different perspective
/spawn-agent chaos:codex-review codex ./project "Help refactor this"

# Spawn without initial prompt (interactive from start)
/spawn-agent chaos:helper claude .

Helper Scripts

agent-spawn.sh

Spawn any supported agent:

bash

~/.codex/skills/spawn-agent/scripts/agent-spawn.sh <session:window> <agent> [directory] [prompt]

claude-spawn.sh

Claude-specific spawner with additional options:

bash

~/.codex/skills/spawn-agent/scripts/claude-spawn.sh <session:window-name> [directory] [claude-args...]

# Examples:
claude-spawn.sh chaos:review . --resume abc123  # Resume session

claude-send.sh

Send a message to a running Claude instance:

bash

~/.codex/skills/spawn-agent/scripts/claude-send.sh <window> <message>

# Example:
claude-send.sh chaos:review "run the tests"

Handles the timing issue where Enter gets swallowed if sent too quickly (uses 1.5 second delay between text and Enter).

Detecting Idle State

Claude Code has an idle_prompt notification hook that fires after 60+ seconds of waiting for user input. To detect when agents are ready:

•

Configure an idle_prompt hook in .claude/settings.json:

json

{
  "hooks": {
    "idle_prompt": [{
      "matcher": "",
      "hooks": [{
        "type": "command",
        "command": "touch /tmp/claude-ready-$CLAUDE_SESSION_ID"
      }]
    }]
  }
}

•
Check for ready files: ls /tmp/claude-ready-* 2>/dev/null
•
Clear after sending: rm -f /tmp/claude-ready-$session_id

Notes

•Agents run interactively in tmux windows
•Use tmux list-windows to see all windows
•Use claude-send.sh to send messages to running agents