Gas

eth_feeHistory

Returns base fee per gas and transaction effective priority fee per gas history for the requested block range if available.

Parameters

Return Value

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_feeHistory","params":["0x10", "latest", [0.1, 0.2, 0.3]],"id":1}' https://klay.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "oldestBlock": "0xa5b",
    "reward": [
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x5d21dba00",
        "0x5d21dba00",
        "0x5d21dba00"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x5d21dba00",
        "0x5d21dba00",
        "0x5d21dba00"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x5d21dba00",
        "0x5d21dba00",
        "0x5d21dba00"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ],
      [
        "0x0",
        "0x0",
        "0x0"
      ]
    ],
    "baseFeePerGas": [
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0",
      "0x0"
    ],
    "gasUsedRatio": [
      0,
      0,
      0,
      0,
      0,
      0.0002952004000002952,
      0,
      0,
      0.00029504250000029504,
      0,
      0,
      0.0002963777000002964,
      0,
      0,
      0,
      0
    ]
  }
}

eth_maxPriorityFeePerGas

Returns a suggestion for a gas tip cap for dynamic fee transaction in peb.

NOTE: This API has different behavior from Ethereum's. Before Magma hardfork, it returns a gas price of Klaytn instead of suggesting a gas price as in Ethereum. After Magma hardfork, it just returns 0.

Parameters

None

Return Value

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_maxPriorityFeePerGas","params":[],"id":1}' https://klay.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0xAE9F7BCC00" // 250,000,000,000 peb = 250 ston (Gwei)
}