📍ftm.feeHistory()

Description: Retrieves historical fee data for a range of blocks.

Parameters

Name	Type	Description
blockcount	integer	Number of blocks in the requested range (1–1024). Fewer may be returned if not all blocks are available.
newestBlock	integer	Highest number block of the requested range.
rewardPercentiles	array (optional)	A monotonically increasing list of percentile values to sample from each block’s effective priority fees per gas, weighted by gas used.

Returns

Type	Description
object	Contains details about historical block fees.

Response Object Structure

Field	Type	Description
oldestBlock	integer	Lowest number block of the returned range.
baseFeePerGas	array	An array of block base fees per gas, including the next block after the newest returned block. Zeroes for pre-EIP-1559 blocks.
gasUsedPerRatio	array	An array of block gas used ratios, calculated as gasUsed / gasLimit.
reward (optional)	array	An array of effective priority fees per gas from a single block. All zeroes if the block is empty.