Environment Variables

Required Variables

NEXT_PUBLIC_HELIUS_API_KEY

Description: Helius RPC API key for Solana blockchain access

Where to get it: https://helius.dev (free tier available)

Example:

NEXT_PUBLIC_HELIUS_API_KEY=abc123-def456-ghi789

Used For:

• Future Solana wallet tracking features
• Currently optional, but recommended for full functionality

---

Optional Variables

NEXT_PUBLIC_POLYMARKET_API_URL

Description: Polymarket Gamma API base URL

Default: https://gamma-api.polymarket.com

Example:

NEXT_PUBLIC_POLYMARKET_API_URL=https://gamma-api.polymarket.com

When to change: If Polymarket changes their API endpoint

---

Example .env.local

# Helius RPC
NEXT_PUBLIC_HELIUS_API_KEY=your_helius_api_key_here

# Polymarket API (optional, uses default)
NEXT_PUBLIC_POLYMARKET_API_URL=https://gamma-api.polymarket.com

---

Security Notes

1. NEXT_PUBLIC_ prefix:

   • Exposes variable to browser
   • Safe for public APIs (Helius key is public-facing)
2. Never commit .env.local:

   • Already in .gitignore
   • Use .env.example for templates
3. Production:

   • Set environment variables in Vercel/Railway dashboard
   • Never hardcode sensitive keys in code