Coding Agent

Coding Agent

Run coding agents (Codex, Claude Code, OpenCode, Pi) for programmatic code generation.

PTY Mode Required

Coding agents are interactive terminal apps that need a pseudo-terminal:

# Always use pty:true when running coding agents
bash pty:true command:"codex exec 'Your prompt'"

Quick Start

# Quick chat (Codex needs a git repo)
SCRATCH=$(mktemp -d) && cd $SCRATCH && git init && codex exec "Your prompt"

# In a real project
bash pty:true workdir:~/project command:"codex exec 'Add error handling'"

Codex CLI

# One-shot execution
bash pty:true workdir:~/project command:"codex exec --full-auto 'Build a dark mode toggle'"

# Background for longer work
bash pty:true workdir:~/project background:true command:"codex --yolo 'Refactor auth module'"

Flags:

• exec "prompt" - One-shot execution
• --full-auto - Sandboxed but auto-approves
• --yolo - No sandbox, no approvals (fastest)

Claude Code

bash pty:true workdir:~/project command:"claude 'Your task'"

OpenCode

bash pty:true workdir:~/project command:"opencode run 'Your task'"

Pi Coding Agent

# Install: npm install -g @mariozechner/pi-coding-agent
bash pty:true workdir:~/project command:"pi 'Your task'"
bash pty:true command:"pi -p 'Summarize src/'"

Parallel Issue Fixing with Git Worktrees

# Create worktrees
git worktree add -b fix/issue-78 /tmp/issue-78 main
git worktree add -b fix/issue-99 /tmp/issue-99 main

# Launch agents
bash pty:true workdir:/tmp/issue-78 background:true command:"codex --yolo 'Fix issue #78'"
bash pty:true workdir:/tmp/issue-99 background:true command:"codex --yolo 'Fix issue #99'"

# Monitor
process action:list
process action:log sessionId:XXX

# Cleanup
git worktree remove /tmp/issue-78

Rules

1. Always use pty:true
2. Be patient - don't kill slow sessions
3. Monitor with process:log
4. Use --full-auto for building, vanilla for reviewing