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🔑 Obtaining Free API Keys ​

Nexora is built to work 100% out of the box with zero required API keys. However, configuring optional explorer keys gives your bot dedicated rate limits on high-volume servers.

1. CoinGecko API (COINGECKO_API_KEY) ​

  • Mode A - Keyless Public API (Default):
    • Zero Setup: Nexora directly queries CoinGecko Keyless Public API out of the box without requiring any API key.
    • Built-in Smart Cache: Caches price metrics in memory to strictly stay within the 30 calls/minute limit.
    • Automatic DexScreener Fallback: If a token is not listed on CoinGecko or the public tier is congested, Nexora automatically falls back to DexScreener DEX pairs.
  • Mode B - Demo / Pro API Key (Optional):
    • Purpose: Higher rate limits and dedicated throughput.
    • Direct Registration: CoinGecko Developer Dashboard
    • Setup: Set COINGECKO_API_KEY="your_key" in .env.

2. Etherscan API Key (ETHERSCAN_API_KEY) ​

  • Purpose: Enhanced transaction and account scanning on Ethereum (ETH).
  • Pricing: Free tier (Up to 5 calls/second).
  • Direct Registration: Etherscan Registration ➡️ API Keys
  • Setup:
    1. Register an account and verify your email.
    2. In your dashboard, open API Keys and click + Add.
    3. Set ETHERSCAN_API_KEY="your_key" in .env.

3. BscScan API Key (BSCSCAN_API_KEY) ​

  • Purpose: Enhanced transaction scanning on BNB Smart Chain (BSC).
  • Pricing: Free tier (Up to 5 calls/second).
  • Direct Registration: BscScan Registration ➡️ API Keys
  • Setup:
    1. Register an account on BscScan.
    2. Generate a new key under API-KEYs.
    3. Set BSCSCAN_API_KEY="your_key" in .env.

4. PolygonScan API Key (POLYGONSCAN_API_KEY) ​

  • Purpose: Enhanced transaction scanning on Polygon (POL/MATIC).
  • Pricing: Free tier.
  • Direct Registration: PolygonScan Registration ➡️ API Keys
  • Setup:
    1. Register an account on PolygonScan.
    2. Generate a key under API Keys.
    3. Set POLYGONSCAN_API_KEY="your_key" in .env.

📰 Crypto News Engine (100% Free & Keyless) ​

Nexora queries real-time news headlines directly from Cointelegraph and Decrypt via built-in RSS syndication without requiring any paid subscriptions or third-party tokens!