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fix: improve .env.template with descriptive comments and Base Sepolia RPC example #2649

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fix: improve .env.template with descriptive comments and Base Sepolia RPC example #2649

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47 changes: 46 additions & 1 deletion packages/playground/.env.template
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Original file line number Diff line number Diff line change
@@ -1,5 +1,50 @@
# OnchainKit Playground — Environment Variables
# Copy this file to .env.local and fill in your values.
# Never commit .env.local to version control.

# ─── RPC URLs ────────────────────────────────────────────────────────────────

# Ethereum Mainnet RPC URL (optional).
# Used by AppProvider to create a public viem client for mainnet reads.
# Get a free endpoint from Coinbase Developer Platform, Alchemy, or Infura:
# https://portal.cdp.coinbase.com/ (Coinbase — recommended for Base projects)
# https://www.alchemy.com/
# https://www.infura.io/
# Leave empty to use the default public RPC (rate-limited, not for production).
NEXT_PUBLIC_ETHEREUM_MAINNET_RPC_URL=""

# Base Sepolia RPC URL (optional, recommended for local development & testing).
# Base Sepolia is the testnet for Base. Use it to test transactions without
# spending real ETH. Get a free endpoint from:
# https://portal.cdp.coinbase.com/ (Coinbase Developer Platform)
# https://www.alchemy.com/
# Public fallback (rate-limited): https://sepolia.base.org
NEXT_PUBLIC_BASE_SEPOLIA_RPC_URL=""

# ─── OnchainKit ──────────────────────────────────────────────────────────────

# OnchainKit API key (required).
# Passed to <OnchainKitProvider apiKey={...}>.
# Get your key at: https://portal.cdp.coinbase.com/
NEXT_PUBLIC_OCK_API_KEY=""

# ─── Vercel ──────────────────────────────────────────────────────────────────

# Vercel environment name (optional).
# Automatically set by Vercel on deploy: "production" | "preview" | "development"
# Only needed if you deploy this playground to Vercel.
NEXT_PUBLIC_VERCEL_ENV=""

# ─── WalletConnect ───────────────────────────────────────────────────────────

# WalletConnect / Reown Project ID (required for WalletConnect support).
# Passed to <OnchainKitProvider projectId={...}>.
# Create a free project at: https://cloud.reown.com/
NEXT_PUBLIC_PROJECT_ID=""
NEXT_PUBLIC_RESERVOIR_API_KEY=""

# ─── Reservoir ───────────────────────────────────────────────────────────────

# Reservoir API key (optional).
# Used for NFT data in the playground.
# Get a free key at: https://reservoir.tools/
NEXT_PUBLIC_RESERVOIR_API_KEY=""