Introducing EnvGuard: Catch .env Mistakes Before They Break Your App

EnvGuard is an open-source .env validator that catches missing keys, type mismatches, stale variables, and potential secret leaks before they break your app or CI pipeline. If you work with .env files, this is the guardrail that prevents avoidable config bugs. TL;DR Validate .env against .env.example Validate values with .env.schema types Detect likely hardcoded secrets Find likely unused env variables Run in watch mode for instant feedback while coding Enforce stricter checks in CI Why Teams Need a .env Validator Most configuration failures are not hard problems. They are visibility problems. You pull a branch and the app fails because one variable is missing. You fix that and hit a runtime bug because a boolean is "yes" instead of true . You deploy and discover stale env keys nobody remembers adding. These issues are easy to fix once identified, but expensive when discovered late. EnvGuard shifts that feedback earlier. What EnvGuard Checks Missing required keys Compares .env against