getFees RPC Method

Description

Returns a recent block hash from the ledger, a fee schedule that can be used to compute the cost of submitting a transaction using it, and the last slot in which the blockhash will be valid.

Parameters

1. object (array) - The configuration object with the following fields:
   • commitment (string, optional) - The level of commitment required for the query. The options include:
     • finalized - The node will query the most recent block confirmed by the supermajority of the cluster as having reached maximum lockout, meaning the cluster has recognized this block as finalized
     • confirmed - The node will query the most recent block that has been voted on by the supermajority of the cluster
     • processed - The node will query its most recent block. Note that the block may not be complete

Returns

The result will be an object with the following fields:

• context - The information about the current state of the program
  • apiVersion - The version of the Solana RPC API to use
  • slot - An integer representing the slot for which to retrieve the fee calculator
• value - A JSON object describing the cluster fee rate at the queried blockhash
  • blockhash - The blockhash for the specified transaction. This is the blockhash used to calculate the fees
  • feeCalculator - A JSON object that represents the fee calculator for the specified transaction:
    • lamportsPerSignature - The number of lamports required to process each signature in the transaction
  • lastValidBlockHeight - The last block height where a blockhash remains valid
  • lastValidSlot - The last valid slot for the specified transaction

Code Examples

curl "https://rpc-mainnet.solanatracker.io/?api_key=YOUR_API_KEY_HERE" \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","id":1, "method":"getFees"}'