getFeeForMessage

Returns the lamports the cluster would charge to process a serialized message at the requested commitment.

Request

{  "jsonrpc": "2.0",  "id": 1,  "method": "getFeeForMessage",  "params": [    "AQABAgIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEBAQAA",    {      "commitment": "processed"    }  ]}

Parameters

Parameter	Type	Required	Description
message	string	Yes	Base-64 encoded transaction message. Accepts both legacy and v0 (versioned) message formats.
commitment	string	No	processed \| confirmed \| finalized (default: finalized). Controls which confirmed slot the fee is evaluated against.
minContextSlot	number	No	Minimum slot at which the request can be evaluated.

commitment values

Value	Description
processed	Return data from the highest slot this node has processed on the fork it currently considers best. This is the newest view, but it can still change if the cluster switches forks.
confirmed	Return data from the highest slot that at least two-thirds of active stake has directly voted to confirm. More stable than processed, but weaker than finalized.
finalized	Return data from the highest slot that the cluster recognizes as finalized. The slot has reached maximum vote lockout and is recognized by at least two-thirds of active stake. This is the strongest commitment level.

Response

{  "jsonrpc": "2.0",  "result": {    "context": { "apiVersion": "3.1.8", "slot": 5068 },    "value": 5000  },  "id": 1}

Field	Type	Description
context	object	Slot and API version the node used to answer this request.
value	u64 \| null	Fee for the supplied message at the referenced blockhash, in lamports. Returns null if the blockhash is no longer valid.

context fields

Field	Type	Description
slot	u64	Slot at which the node evaluated this request.
apiVersion	string	RPC API version reported by the node. May be omitted by older nodes.