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Gas Prices

Real-time gas price data for Ethereum and L2s.

Try it Live

Open in Swagger UI → to test these endpoints interactively.

Endpoints​

EndpointDescriptionPrice
GET /api/gasEthereum gasFREE
GET /api/gas/{chain}Chain-specificFREE
GET /api/gas/allAll chains$0.001
GET /api/gas/history/{chain}Historical$0.01

GET /api/gas​

Current Ethereum gas prices.

Request​

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

Response​

{
  "chain": "ethereum",
  "baseFee": 25.5,
  "fast": {
    "gwei": 35,
    "usd": 2.45,
    "time": "15 seconds"
  },
  "standard": {
    "gwei": 28,
    "usd": 1.96,
    "time": "30 seconds"
  },
  "slow": {
    "gwei": 22,
    "usd": 1.54,
    "time": "2 minutes"
  },
  "estimatedCosts": {
    "transfer": { "gwei": 21000, "usd": 0.58 },
    "erc20Transfer": { "gwei": 65000, "usd": 1.82 },
    "swap": { "gwei": 150000, "usd": 4.20 },
    "nftMint": { "gwei": 85000, "usd": 2.38 }
  },
  "updatedAt": "2026-02-08T04:30:00Z"
}

SDK​

const gas = await client.getGas();
console.log(`Fast: ${gas.fast.gwei} gwei ($${gas.fast.usd})`);

GET /api/gas/{chain}​

Gas prices for a specific chain.

Supported Chains​

ChainParameter
Ethereumethereum
Basebase
Arbitrumarbitrum
Optimismoptimism
Polygonpolygon

Request​

curl https://api.web3identity.com/api/gas/base

Response​

{
  "chain": "base",
  "baseFee": 0.001,
  "fast": {
    "gwei": 0.005,
    "usd": 0.0001
  },
  "standard": {
    "gwei": 0.003,
    "usd": 0.00006
  },
  "l1DataFee": 0.15
}

GET /api/gas/all​

Gas prices for all supported chains.

Response​

{
  "chains": {
    "ethereum": {
      "baseFee": 25.5,
      "fast": { "gwei": 35, "usd": 2.45 }
    },
    "base": {
      "baseFee": 0.001,
      "fast": { "gwei": 0.005, "usd": 0.0001 }
    },
    "arbitrum": {
      "baseFee": 0.1,
      "fast": { "gwei": 0.15, "usd": 0.001 }
    }
  },
  "cheapest": "base",
  "updatedAt": "2026-02-08T04:30:00Z"
}

GET /api/gas/history/{chain}​

Historical gas prices.

Query Parameters​

ParamTypeDefaultDescription
hoursnumber24Hours of history

Response​

{
  "chain": "ethereum",
  "history": [
    { "timestamp": "2026-02-08T00:00:00Z", "baseFee": 22.3 },
    { "timestamp": "2026-02-08T01:00:00Z", "baseFee": 25.1 },
    { "timestamp": "2026-02-08T02:00:00Z", "baseFee": 28.7 }
  ],
  "average": 25.4,
  "min": 18.2,
  "max": 45.6
}

Gas Savings Tips​

ActionEthereumBaseSavings
ETH Transfer$2.45$0.000199.99%
Swap$4.20$0.00199.98%
NFT Mint$2.38$0.000599.98%

Consider L2s for significant gas savings!