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eth_feeHistory RPC Method

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Updated on
Jan 19, 2026

eth_feeHistory RPC Method

Parameters

blockCount
string/integer
REQUIRED
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newestBlock
string
REQUIRED
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rewardPercentiles
array
REQUIRED
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Returns

oldestBlock
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baseFeePerGas
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gasUsedRatio
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reward
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Request
1
curl -X POST "https://docs-demo.b3-mainnet.quiknode.pro/" \
2
-H "Content-Type: application/json" \
3
-d '{
4
"jsonrpc": "2.0",
5
"method": "eth_feeHistory",
6
"params": [
7
4,
8
"latest",
9
[
10
25,
11
75
12
]
13
],
14
"id": 1
15
}'
1
curl -X POST "https://docs-demo.b3-mainnet.quiknode.pro/" \
2
-H "Content-Type: application/json" \
3
-d '{
4
"jsonrpc": "2.0",
5
"method": "eth_feeHistory",
6
"params": [
7
4,
8
"latest",
9
[
10
25,
11
75
12
]
13
],
14
"id": 1
15
}'
Response
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": {
5
"oldestBlock": "0x2c13d87",
6
"reward": [
7
[
8
"0x0",
9
"0x0"
10
],
11
[
12
"0x0",
13
"0x0"
14
],
15
[
16
"0x0",
17
"0x0"
18
],
19
[
20
"0x0",
21
"0x0"
22
]
23
],
24
"baseFeePerGas": [
25
"0xfc",
26
"0xfc",
27
"0xfc",
28
"0xfc",
29
"0xfc"
30
],
31
"gasUsedRatio": [
32
0.0014614,
33
0.001741,
34
0.0014614,
35
0.001741
36
],
37
"baseFeePerBlobGas": [
38
"0x1",
39
"0x1",
40
"0x1",
41
"0x1",
42
"0x1"
43
],
44
"blobGasUsedRatio": [
45
0,
46
0,
47
0,
48
0
49
]
50
}
51
}
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": {
5
"oldestBlock": "0x2c13d87",
6
"reward": [
7
[
8
"0x0",
9
"0x0"
10
],
11
[
12
"0x0",
13
"0x0"
14
],
15
[
16
"0x0",
17
"0x0"
18
],
19
[
20
"0x0",
21
"0x0"
22
]
23
],
24
"baseFeePerGas": [
25
"0xfc",
26
"0xfc",
27
"0xfc",
28
"0xfc",
29
"0xfc"
30
],
31
"gasUsedRatio": [
32
0.0014614,
33
0.001741,
34
0.0014614,
35
0.001741
36
],
37
"baseFeePerBlobGas": [
38
"0x1",
39
"0x1",
40
"0x1",
41
"0x1",
42
"0x1"
43
],
44
"blobGasUsedRatio": [
45
0,
46
0,
47
0,
48
0
49
]
50
}
51
}
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