Solana getFeeCalculatorForBlockhash RPC Method

Returns the fee calculator associated with the query blockhash, or null if the blockhash has expired

This method is expected to be removed in solana-core v2.0. Please use isBlockhashValid or getFeeForMessage instead.

Parameters#

stringrequired

query blockhash, as a base-58 encoded string

objectoptional

Configuration object containing the following fields:

commitmentstringoptional

The commitment describes how finalized a block is at that point in time.

minContextSlotnumberoptional

The minimum slot that the request can be evaluated at.

Result#

The result will be an RpcResponse JSON object with value equal to:

<null> - if the query blockhash has expired; or
<object> - otherwise, a JSON object containing:
- feeCalculator: <object> - FeeCalculator object describing the cluster fee rate at the queried blockhash

Code sample#

curl https://api.devnet.solana.com -s -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getFeeCalculatorForBlockhash",
    "params": [
      "GJxqhuxcgfn5Tcj6y3f8X4FeCDd2RQ6SnEMo1AAxrPRZ"
    ]
  }
'

Response#

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 221
    },
    "value": {
      "feeCalculator": {
        "lamportsPerSignature": 5000
      }
    }
  },
  "id": 1
}