getTokenSupply - Solana

Example code for the getTokenSupply JSON-RPC method. Complete guide on how to use the getTokenSupply JSON-RPC method in the GetBlock Web3 documentation.

This method returns the total circulating supply of an SPL Token mint, together with the mint's decimal precision.

Parameters

Parameter	Type	Required	Description
mint	string	Yes	Base58-encoded Pubkey of the SPL Token mint
config	object	No	Configuration object controlling commitment

Config Object

Field	Type	Required	Description
commitment	string	No	Commitment level: processed, confirmed, or finalized. Defaults to finalized

Request

cURL

curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getTokenSupply",
    "params": ["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", {"commitment": "finalized"}],
    "id": "getblock.io"
}'

@solana/web3.js

const { Connection, PublicKey } = require('@solana/web3.js');

const connection = new Connection('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', 'finalized');

const { value } = await connection.getTokenSupply(
  new PublicKey('EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v')
);

console.log(value.uiAmountString);

Request

import requests

response = requests.post(
    'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'getTokenSupply',
        'params': ["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", {"commitment": "finalized"}],
        'id': 'getblock.io'
    }
)

print(response.json()['result'])

Rust

use reqwest::Client;
use serde_json::{json, Value};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "getTokenSupply",
            "params": ["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", {"commitment": "finalized"}],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;

    println!("Result: {}", response["result"]);
    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "context": {
            "apiVersion": "2.3.6",
            "slot": 397234561
        },
        "value": {
            "amount": "8721043118453221",
            "decimals": 6,
            "uiAmount": 8721043118.45322,
            "uiAmountString": "8721043118.453221"
        }
    }
}

Response Parameters

Parameter	Type	Description
jsonrpc	string	JSON-RPC protocol version ("2.0")
id	string	Request identifier matching the request
result	object	RPC response object where value holds the mint supply and decimal precision

Value Object

Field	Type	Description
amount	string	Raw supply as a string, without decimal adjustment
decimals	number	Decimal precision defined on the mint
uiAmount	number	null
uiAmountString	string	Supply adjusted for decimals, as a string

Use Cases

• Market Cap: Multiply circulating supply by price to compute market capitalization

• Mint Monitoring: Detect supply increases that indicate new minting activity

• Burn Verification: Confirm supply decreased after a burn instruction

• Stablecoin Reporting: Track issued supply of USDC and USDT on Solana

Error Handling

Error Code	Message	Description
-32602	Invalid params	Pubkey is not an initialized SPL Token mint
-32603	Internal error	Node failed to read the mint account
-32005	Node is unhealthy	The node has fallen behind the cluster tip