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POST
getFeeForMessage

Request Parameters

string
required
Base-64 encoded serialized Solana transaction message to calculate the exact fee for.
string
The commitment level for the request.
  • confirmed
  • finalized
number
The minimum slot that the request can be evaluated at.

Authorizations

api-key
string
query
required

Your Helius API key. You can get one for free in the dashboard.

Body

application/json
jsonrpc
enum<string>
default:2.0
required

The JSON-RPC protocol version.

Available options:
2.0
Example:

"2.0"

id
string
default:1
required

A unique identifier for the request.

Example:

"1"

method
enum<string>
default:getFeeForMessage
required

The name of the RPC method to invoke.

Available options:
getFeeForMessage
Example:

"getFeeForMessage"

params
(string | object)[]
required

Parameters for the method.

Base-64 encoded serialized Solana transaction message to calculate the exact fee for.

Example:

"AQABAgIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEBAQAA"

Response

Successfully retrieved the fee for the given message.

jsonrpc
enum<string>

The JSON-RPC protocol version.

Available options:
2.0
Example:

"2.0"

id
string

Identifier matching the request.

Example:

"1"

result
object

Fee information for the message.