getFees

Deprecated: This method is deprecated. Use getFeeForMessage and getLatestBlockhash instead.

Returns a recent block hash from the ledger, a fee schedule that can be used to compute the cost of submitting a transaction, and the last slot in which the blockhash will be valid. This method has been deprecated in favor of the combination of getLatestBlockhash and getFeeForMessage, which provide a cleaner separation of concerns and support for the newer fee model.

Parameters

#	Type	Required	Description
1	`object`	No	Configuration object

Configuration object fields:

Field	Type	Description
`commitment`	`string`	Commitment level: `processed`, `confirmed`, or `finalized`

Response

Returns an RpcResponse object:

Field	Type	Description
`context.slot`	`u64`	The slot at which the fees were read
`value.blockhash`	`string`	A recent blockhash
`value.feeCalculator.lamportsPerSignature`	`u64`	Fee per signature in lamports
`value.lastValidSlot`	`u64`	Last slot in which the blockhash will be valid
`value.lastValidBlockHeight`	`u64`	Last block height at which the blockhash will be valid

Code Examples

cURL

1curl http://[IP_ADDRESS]:[PORT] -X POST -H "Content-Type: application/json" -d '{
2  "jsonrpc": "2.0",
3  "id": 1,
4  "method": "getFees",
5  "params": []
6}'

TypeScript

1const response = await fetch("http://[IP_ADDRESS]:[PORT]", {
2  method: "POST",
3  headers: { "Content-Type": "application/json" },
4  body: JSON.stringify({
5    jsonrpc: "2.0",
6    id: 1,
7    method: "getFees",
8    params: []
9  }),
10});
11const { result } = await response.json();
12console.log("Blockhash:", result.value.blockhash);

Python

1import requests
2
3response = requests.post("http://[IP_ADDRESS]:[PORT]", json={
4    "jsonrpc": "2.0",
5    "id": 1,
6    "method": "getFees",
7    "params": []
8})
9result = response.json()["result"]
10print(f"Blockhash: {result['value']['blockhash']}")

Rust

1use reqwest::Client;
2use serde_json::json;
3
4#[tokio::main]
5async fn main() -> Result<(), Box<dyn std::error::Error>> {
6    let client = Client::new();
7    let res = client.post("http://[IP_ADDRESS]:[PORT]")
8        .json(&json!({
9            "jsonrpc": "2.0",
10            "id": 1,
11            "method": "getFees",
12            "params": []
13        }))
14        .send().await?
15        .text().await?;
16    println!("{}", res);
17    Ok(())
18}

Example Response

1{
2  "jsonrpc": "2.0",
3  "result": {
4    "context": { "slot": 123456789 },
5    "value": {
6      "blockhash": "GJxqhuxcgfn5Tcj6y3f8X4FeCDd2RQ6SnEMo1AAxrPRZ",
7      "feeCalculator": { "lamportsPerSignature": 5000 },
8      "lastValidSlot": 123456939,
9      "lastValidBlockHeight": 150676181
10    }
11  },
12  "id": 1
13}