[Gas] eth_feeHistory
Returns base fee per gas and transaction effective priority fee per gas history for the requested block range if available.
JSONRPC: eth_feeHistory
Request
- application/json
Body
Array [
- IntegerBlockNumber
- HexadecimalBlockNumber
- BlockTag
]
Default value: eth_feeHistory
Method name
Default value: 1
Request ID, Random or Auto incrementation
Default value: 2.0
JSON-RPC Version (2.0)
params
undefined[]
Number of blocks in the requested range expressed as a hexidecimal number. Between 1 (0x1) and 1024 (0x400) blocks can be requested in a single query. Less than requested may be returned if not all blocks are available.
BlockNumberOrTag
object
oneOf
number
string
string
An array of floating point values between 0 and 100.
Responses
- 200
Returns base fee per gas and transaction effective priority fee per gas history
- application/json
- Schema
- Example (from schema)
Schema
Default value: 2.0
error
object
A Number that indicates the error type that occurred. This MUST be an integer.
| code | message | description | |-----|-----|-------| | -32700 | Parse error | invalid JSON was received by the server. An error occurred on the server while parsing the JSON text. | |-32602 | Invalid params | Invalid method parameter(s). |
A String providing a short description of the error. The message SHOULD be limited to a concise single sentence.
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
Lowest number block of the returned range expressed as a hexidecimal number.
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.
An array of block gas used ratios. These are calculated as the ratio of gasUsed and gasLimit
An array of effective priority fee per gas data points from a single block. All zeroes are returned if the block is empty.
{
"jsonrpc": "2.0",
"id": 0,
"error": {
"code": -32700,
"message": "Parse error",
"data": "string"
},
"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"
]
],
"baseFeePerGas": [
"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
]
}
}