eth_feeHistory
Returns transaction base fee per gas and effective priority fee gas for the requested/suggested block range.
Params
Name - blockCount
Requested range of blocks. Clients will return less than the requested range if not all blocks are available.
schema
title - hex encoded unsigned integer`
type - string
Name - newestBlock
Highest block of the requested range.
schema
One Of
title - Block number
type - string
title - Block tag
type - string
description - `description
earliest: The lowest numbered block the client has available; finalized: The most recent crypto-economically secure block, cannot be re-orged outside of manual intervention driven by community coordination; safe: The most recent block that is safe from re-orgs under honest majority and certain synchronicity assumptions; latest: The most recent block in the canonical chain observed by the client, this block may be re-orged out of the canonical chain even under healthy/normal conditions; pending: A sample next block built by the client on top of latest and containing the set of transactions usually taken from local mempool. Before the merge transition is finalized, any call querying for finalized or safe block MUST be responded to with -39001: Unknown block error`
enum
- earliest
- finalized
- safe
- latest
- pending
Result
Name - feeHistoryResult
Fee history for the returned block range. This can be a subsection of the requested range if not all blocks are available.
schema
Object
title - feeHistoryResults
description - Fee history results
properties
oldestBlock
title - oldestBlock
type - string
description - Lowest number block of returned range.
baseFeePerGas
Array
title - baseFeePerGasArray
type - string
description - An array of block base fees 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-EIP-1559 blocks.
baseFeePerBlobGas
Array
title - baseFeePerBlobGasArray
type - string
description - An array of block base fees per blob 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-EIP-4844 blocks.
gasUsedRatio
Array
title - gasUsedRatio
type - string
description - An array of block gas used ratios. These are calculated as the ratio of gasUsed and gasLimit.
title - normalized ratio
type - number
blobGasUsedRatio
Array
title - blobGasUsedRatio
type - string
description - An array of block blob gas used ratios. These are calculated as the ratio of blobGasUsed and the max blob gas per block.
title - normalized ratio
type - number
reward
Array
title - rewardArray
type - string
description - A two-dimensional array of effective priority fees per gas at the requested block percentiles.
Array