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GET /api/gas

Ethereum Gas Prices (Always Free)

Get current Ethereum mainnet gas prices in Gwei. Always free.

Response Fields​

  • slow: Safe low price (longer confirmation)
  • standard: Average price (normal confirmation)
  • fast: High price (fast confirmation)
  • baseFee: Current base fee

Use Cases​

  • Estimate transaction costs
  • Choose optimal gas price
  • Monitor network congestion

Endpoint​

GET https://api.web3identity.com/api/gas

Parameters​

NameInTypeRequiredDescription
chainquerystring❌Network (ethereum, polygon, arbitrum)

Example Request​

curl -s "https://api.web3identity.com/api/gas" | jq

Responses​

200 Current gas prices​

{
  "chain": "ethereum",
  "slow": 0.03,
  "standard": 0.04,
  "fast": 0.05,
  "unit": "gwei",
  "source": "rpc",
  "cached": false,
  "cachedAt": null,
  "timestamp": "2026-02-09T06:30:00.000Z"
}

400 Bad Request - Invalid parameters or malformed request​

{
  "error": "Invalid parameter format",
  "code": "INVALID_PARAMETER"
}

402 Payment Required - Free tier exhausted​

{
  "example": "response"
}

404 Not Found - Resource does not exist​

{
  "error": "Resource not found",
  "code": "NOT_FOUND"
}

429 Rate Limited​

{
  "example": "response"
}

500 Internal Server Error - Something went wrong on our end​

{
  "error": "Internal server error",
  "code": "INTERNAL_ERROR"
}

Auto-generated from OpenAPI spec