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​
Parameters

​
chainId
string
default:"1001"
required
Unique identifier for a blockchain network.
​
id
number
default:1
required
Request identifier used to match responses.
​
jsonrpc
string
default:"2.0"
required
JSON-RPC version.
​
method
string
default:"klay_feeHistory"
required
JSON-RPC method name.
​
params
object
required
Parameters: [blockCount, newestBlock, rewardPercentiles].Positional parameters for klay_feeHistory:
  • params[0]: Hex-encoded number of blocks in the request range (max 1024).
  • params[1]: Block number where this transaction was included. Null when pending.
  • params[2]: Priority fee percentiles to return (0-100).

​
Returns

​
result
object
Fee history for the requested range.
curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=1001 \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "klay_feeHistory",
    "params": [
      "0x5",
      0,
      [
        10,
        50,
        90
      ]
    ]
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {}
}