> ## Documentation Index
> Fetch the complete documentation index at: https://committ.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Env Package

> Zod-validated environment variables shared across all apps.

# Env Package (`packages/env`)

Environment variables can be a major source of runtime crashes if not managed properly. CommitT uses the `@t3-oss/env-core` pattern to strictly validate all environment variables at boot time.

## Architecture

The `packages/env` directory exports a centralized `env.ts` file that uses Zod to define the exact shape of our environment variables.

### Key Features

* **Type Safety**: Generates TypeScript types for `process.env`.
* **Client vs Server**: Strictly separates variables that are safe to expose to the client (e.g., `EXPO_PUBLIC_CONVEX_URL`) from private server secrets (e.g., `OPENCODE_BASE_URL`).
* **Fail-Fast Boot**: If a required environment variable is missing or malformed, the application (whether it's the mobile bundler or the backend dev server) will immediately crash with a detailed error message, rather than failing silently in production.