Purpose
Spawn a new terminal window to execute CLI commands. This skill is for generic command execution, NOT for spawning AI agents. For AI agents, use the spawn:agent skill instead.
Variables
| Variable | Default | Description |
|---|---|---|
| LOG_TO_FILE | false | Write full terminal output to debug file |
| CAPTURE | false | Block and return output directly |
Instructions
MANDATORY - You MUST follow the Workflow steps below in order. Do not skip steps.
- •Identify the CLI command the user wants to run
- •Run
<command> --helpfirst to verify syntax and options - •Execute the command in a new terminal using
fork_terminal()
Red Flags - STOP and follow Cookbook
If you're about to:
- •Execute a command without checking its --help first
- •Assume you know the command syntax
- •Skip the --help step "because it's simple"
- •Spawn an AI agent (use
spawn:agentinstead)
STOP -> Run <command> --help first -> Review output -> Then proceed
Workflow
MANDATORY CHECKPOINTS - Verify each before proceeding:
- • Understand the user's request
- • VERIFY: This is a CLI command, NOT an AI agent request
- • READ: '../agent/fork_terminal.py' to understand the tooling
- • Follow the Cookbook: Read './cookbook/cli-command.md'
- • CHECKPOINT: Ran
<command> --helpand reviewed options - • Execute fork_terminal(command, log_to_file=False, log_agent_output=False)
Cookbook
CLI Commands
- •IF: User requests any non-AI CLI command (ffmpeg, curl, python, npm, etc.)
- •THEN: Read and execute './cookbook/cli-command.md'
- •Examples:
- •"Create a new terminal to run ffmpeg"
- •"Spawn terminal with curl"
- •"Fork a terminal to run python script.py"
- •"New terminal: npm run build"
Usage
The fork_terminal() function is located at ../agent/fork_terminal.py:
python
from spawn.agent.fork_terminal import fork_terminal
# Simple command execution (no output capture)
fork_terminal("npm run build")
# With debug output capture
file_path = fork_terminal("ffmpeg -i video.mp4 output.gif", log_to_file=True)
# Blocking capture (waits for completion)
output = fork_terminal("python script.py", capture=True, log_to_file=True)
When to Use spawn:agent Instead
If the user mentions any of these, use spawn:agent:
- •Claude, Claude Code
- •Codex, OpenAI
- •Gemini, Google
- •Cursor
- •OpenCode
- •Copilot, GitHub Copilot
- •"AI agent", "coding agent", "spawn agent"