Claude Code Runner

Execute programming tasks via Claude Code using PTY-based invocation. Handles non-TTY environments, auto-responds to prompts, and manages file synchronization.

Overview

A wrapper skill for running Claude Code programmatically in non-interactive environments. Uses PTY (pseudo-terminal) to handle TTY-required operations and automatically responds to confirmation prompts.

Features

• PTY-based execution: Works in non-TTY environments (containers, CI/CD, background processes)
• Auto-respond to prompts: Automatically answers "Do you want to..." confirmations
• User switching: Runs as specified non-root user
• File synchronization: Copies project to temp directory, executes, syncs changes back
• Timeout handling: Configurable timeout with proper cleanup
• Output capture: Captures and returns full stdout/stderr

Installation

# Clone the skill
git clone https://github.com/lhl09120/claude-code-runner-en.git

# Make script executable
chmod +x claude-code-runner-en/scripts/run_claude.py

Usage

Basic Usage

from claude_code_runner import run_claude_code

result = run_claude_code(
    workdir='/path/to/project',
    prompt='Refactor the authentication module to use JWT tokens',
    user='lighthouse',
    timeout=300
)

print(result)

Via Command Line

python3 scripts/run_claude.py /path/to/project "Your task description here"

Advanced Options

result = run_claude_code(
    workdir='/root/repo/my-project',
    prompt='''
    1. Review the codebase
    2. Identify security vulnerabilities
    3. Fix any issues found
    4. Add appropriate tests
    ''',
    user='developer',
    timeout=600  # 10 minutes
)

API Reference

run_claude_code(workdir, prompt, user='lighthouse', timeout=300)

Execute a Claude Code task in a PTY environment.

Parameters:

• workdir (str): Working directory containing the project
• prompt (str): Natural language task description
• user (str): User to run as (default: 'lighthouse')
• timeout (int): Timeout in seconds (default: 300)

Returns:

• str: Combined stdout and stderr output

Behavior:

1. Copies project to temporary directory
2. Changes ownership to specified user
3. Executes Claude Code via PTY
4. Auto-responds to confirmation prompts
5. Syncs changes back to original directory
6. Cleans up temporary files

Use Cases

1. Automated Code Review

result = run_claude_code(
    workdir='/root/repo/project',
    prompt='Review this codebase and identify potential bugs or improvements'
)

2. Refactoring Tasks

result = run_claude_code(
    workdir='/root/repo/legacy-app',
    prompt='Refactor the database layer to use SQLAlchemy ORM instead of raw SQL'
)

3. Adding Features

result = run_claude_code(
    workdir='/root/repo/api-service',
    prompt='''
    Add a new REST endpoint for user profile management:
    - GET /api/users/{id}/profile
    - PUT /api/users/{id}/profile
    - Include validation and error handling
    - Add unit tests
    '''
)

4. Bug Fixes

result = run_claude_code(
    workdir='/root/repo/web-app',
    prompt='Fix the memory leak in the WebSocket connection handler'
)

Requirements

• Python 3.8+
• Claude Code installed and in PATH
• Unix-like environment (Linux/macOS)
• Root or sudo access (for user switching)

Configuration

Environment Variables

• CLAUDE_CODE_USER: Default user to run as (default: 'lighthouse')
• CLAUDE_CODE_TIMEOUT: Default timeout in seconds (default: 300)

Customization

Edit scripts/run_claude.py to customize:

• Auto-response keywords
• Temp directory location
• Sync behavior
• Output formatting

Troubleshooting

"Permission denied" errors

Ensure the script is run with sufficient privileges to:

• Create temporary directories
• Change file ownership
• Switch to target user

Claude Code not found

Make sure Claude Code is installed and in the system PATH:

which claude

Task timeout

Increase the timeout for long-running tasks:

run_claude_code(workdir, prompt, timeout=600)  # 10 minutes

Interactive prompts not auto-responded

Add new prompt patterns to the auto-respond logic:

if b'new prompt text' in output:
    os.write(master_fd, b'y\n')

Limitations

• Requires Unix-like environment (uses PTY)
• Requires root/sudo for user switching
• Claude Code must be installed separately
• May not handle all edge cases of interactive prompts

License

MIT License

Copyright (c) 2026 lhl09120

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

See LICENSE file for full details.

Changelog

v1.0.0 (2026-02-27)

• Initial release
• PTY-based Claude Code execution
• Auto-response to confirmation prompts
• File synchronization
• User switching support