env-sentinel is a .env validation and linting tool that ensures your environment variables are correct, safe, and fully documented.
Run this command to initialize env-sentinel:
npx env-sentinel initWhat this does:
.env-sentinel schema fileOr explore first:
Set up env-sentinel in minutes and start validating your environment variables right away.
npx env-sentinel initCreates .env-sentinel schema file
DATABASE_URL=required|string
API_KEY=required|secureDefine your environment variables
Add validation rules and documentation
See env-sentinel in action. Run commands and see real output without installing anything.
npx env-sentinel lint --file .env.exampleReady to use it in your project?
Env-Sentinel helps developers prevent errors, save time, and maintain consistency with their environment variables.
Validate your environment variables before they hit production — catch mistakes early and prevent downtime.
Lint and document your .env files automatically, freeing your team to focus on building features faster.
Ensure all developers use the same environment variable structure — no more hidden misconfigurations.
Learn from our latest guides, tutorials, and insights on environment variable management and best practices.
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Everything you need to know about Env-Sentinel and how it improves your workflow.