env-sync

What This Skill Does

The env-sync skill is an automated environment variable documentation engine designed to eliminate the frustration of undocumented .env files. When working in complex codebases with dozens of environment variables, it is common to encounter "configuration drift" where the .env.example file falls out of sync with actual production or development requirements. This tool solves that by automatically parsing your .env, .env.local, and .env.development files to construct a clean, annotated .env.example file.

By leveraging the GPT-4o-mini model, the skill doesn't just copy keys—it analyzes the context of your variable names to generate human-readable documentation. It intelligently strips sensitive values, replacing them with descriptive placeholders to ensure that secrets are never accidentally committed to version control. This ensures that new team members can immediately understand the purpose and necessity of every variable in the stack.

Installation

To install this skill directly into your OpenClaw environment, execute the following command in your terminal:

clawhub install openclaw/skills/skills/lxgicstudios/env-sync

Ensure you have Node.js 18+ installed on your system. You will also need a valid OPENAI_API_KEY set in your environment variables, as the tool utilizes AI to generate the contextual descriptions for your configurations.

Use Cases

• Onboarding: Instantly provide new developers with a perfectly documented map of all required environment variables.
• CI/CD Pipelines: Automatically verify that your repository's .env.example file is in sync with the current local development configuration before allowing a pull request to merge.
• Refactoring: Identify unused or duplicate environment variables that may have accumulated over months of development.
• Deployment: Standardize environment configuration across multiple staging, production, and testing environments.

Example Prompts

1. "Sync my environment variables and create a new .env.example file for the current directory."
2. "Update the existing .env.example file in the /api-service folder using my local env files."
3. "Generate a clean, documented .env.example for my project and highlight which variables are currently missing from the example file."

Tips & Limitations

• Pro-tip: Integrate this into a pre-commit hook to ensure your documentation never goes stale.
• Security: While the tool is designed to strip secrets, always perform a cursory review of the generated .env.example before committing it to a public repository to ensure no sensitive data was accidentally retained.
• Accuracy: Because it uses LLMs to interpret variable names, very obscure or proprietary custom variable names might require minor manual refinement in the final file.
• Scope: The skill reads files from the local filesystem, so ensure the OpenClaw agent has the appropriate file-read permissions for your project directory.