Agent Skills › fastclaw-ai/fastclaw › code-runner

code-runner

GitHub

用于在沙箱环境中执行和调试多种编程语言代码的 Skill。支持 Python、Shell 和 Node.js，具备自动安装依赖、即时执行及错误自动修复功能。

skills/code-runner/SKILL.md fastclaw-ai/fastclaw

Trigger Scenarios

用户要求运行代码片段用户请求测试脚本输出需要调试或排查代码执行错误

Install

npx skills add fastclaw-ai/fastclaw --skill code-runner -g -y

More Options

Use without installing

npx skills use fastclaw-ai/fastclaw@code-runner

指定 Agent (Claude Code)

npx skills add fastclaw-ai/fastclaw --skill code-runner -a claude-code -g -y

安装 repo 全部 skill

npx skills add fastclaw-ai/fastclaw --all -g -y

预览 repo 内 skill

npx skills add fastclaw-ai/fastclaw --list

SKILL.md

Frontmatter

{
    "name": "code-runner",
    "metadata": {
        "fastclaw": {
            "always": true
        }
    },
    "description": "Execute code in multiple programming languages. Use when the user asks to run, test, or debug code in Python, JavaScript, shell, or other languages."
}

Code Runner Skill

Execute code using the exec tool in the sandbox environment.

Available Languages

Python 3

python3 -c "print('hello')"
# Or write to file and run:
python3 script.py

Install packages with: pip install package_name

Shell/Bash

echo "hello" && ls -la

Node.js (install first if needed)

# Install node if not available
apt-get update && apt-get install -y nodejs npm 2>/dev/null || apk add nodejs npm 2>/dev/null
node -e "console.log('hello')"

Guidelines

Always execute code immediately — don't just show it
For multi-line scripts, use write_file to save then exec to run
Install missing packages automatically without asking
Show the complete output to the user
If code fails, analyze the error and fix it automatically
For Python one-liners, use python3 -c "..."
For complex scripts, write to a .py file first

Error Handling

If a command fails, check the error and try to fix it
Common issues: missing packages (install them), syntax errors (fix them), permission denied (use appropriate paths)
Always retry at least once after fixing the issue