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[Gas] eth_feeHistory

Returns historical gas information for a range of blocks.

JSONRPC: eth_feeHistory

Request​

Body

    params

    undefined[]

  • Array [

    • BlockCount Hexadecimal

    Number of blocks in the requested range.

    BlockNumberOrTag

    object

    oneOf

    the block number with type integer

    number

    RewardPercentiles float[]

    An array of floating point values between 0 and 100.

  • ]

Responses​

Returns historical gas information for a range of blocks.

Schema

    error

    object

    code int64required

    A Number that indicates the error type that occurred. This MUST be an integer.

    codemessagedescription
    -32700Parse errorinvalid JSON was received by the server. An error occurred on the server while parsing the JSON text.
    -32602Invalid paramsInvalid method parameter(s).
    message string

    A String providing a short description of the error. The message SHOULD be limited to a concise single sentence.

    data string

    A Primitive or Structured value that contains additional information about the error. This may be omitted. The value of this member is defined by the Server (e.g. detailed error information, nested errors etc.).

    result

    object

    oldestBlock hexrequired

    Lowest number block of returned range.

    baseFeePerGas Hexadecimal[]required

    An array of block base fee per gas. This includes the next block after the newest of the returned range, because this value can be derived from the newest block. Zeroes are returned for pre-Magma blocks.

    gasUsedRatio float[]required

    An array of block gas used ratios. Measures the network congestion level. These are calculated as the ratio of block gas used and KIP-71 MAX_BLOCK_GAS_USED_FOR_BASE_FEE. If the ratio is above 1, then 1 is returned.

    reward array[]

    A 2D array of effective priority fees per gas. reward[n][i] is the rewardPercentiles[i]-th percentile effective priority fees per gas among the transactions in the block oldestBlock + n. Only returned if rewardPercentiles is specified.

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