> ## Documentation Index
> Fetch the complete documentation index at: https://docs.indic8.ing/llms.txt
> Use this file to discover all available pages before exploring further.

# Environment Variables Reference

> Comprehensive reference matrix of all configuration options and environment variables.

This page documents all environment variables used by Indic8.

## Core Application Configuration

| Variable               | Required | Description                                            | Example                               |
| :--------------------- | :------- | :----------------------------------------------------- | :------------------------------------ |
| `NODE_ENV`             | Yes      | Environment mode (`production`, `development`, `test`) | `production`                          |
| `NEXTAUTH_URL`         | Yes      | Canonical root URL of your Indic8 deployment           | `https://analytics.example.com`       |
| `NEXTAUTH_SECRET`      | Yes      | 32-byte secret key used to sign JWT sessions           | `6b2e98fa...`                         |
| `DATABASE_URL`         | Yes      | PostgreSQL connection string                           | `postgresql://user:pass@host:5432/db` |
| `REDIS_URL`            | Yes      | Redis connection string for queues & deduplication     | `redis://localhost:6379`              |
| `VAULT_ENCRYPTION_KEY` | Yes      | 32-byte hex key for Sovereign Vault AES-256-GCM        | `a1b2c3d4...`                         |

***

## Authentication Providers (Optional)

Configure OAuth logins for team workspace access:

| Variable               | Description                            |
| :--------------------- | :------------------------------------- |
| `GITHUB_CLIENT_ID`     | GitHub OAuth application client ID     |
| `GITHUB_CLIENT_SECRET` | GitHub OAuth application client secret |
| `GOOGLE_CLIENT_ID`     | Google Cloud OAuth client ID           |
| `GOOGLE_CLIENT_SECRET` | Google Cloud OAuth client secret       |

***

## Storage and CDN (Optional)

For persistent Studio Canvas export card storage:

| Variable               | Description                           | Default          |
| :--------------------- | :------------------------------------ | :--------------- |
| `STORAGE_DRIVER`       | Storage backend (`s3`, `r2`, `local`) | `local`          |
| `S3_BUCKET`            | S3 bucket name                        | `indic8-storage` |
| `S3_REGION`            | AWS region or Cloudflare R2 region    | `us-east-1`      |
| `S3_ACCESS_KEY_ID`     | S3 access key ID                      | --               |
| `S3_SECRET_ACCESS_KEY` | S3 secret access key                  | --               |