Read a price feed

npm install viem

npm install ethers

pip install web3

import { createPublicClient, http, parseAbi, formatUnits } from 'viem';
import { sei } from 'viem/chains';

const client = createPublicClient({ chain: sei, transport: http() });

const SEI_USD = '0x09c6e594DE2EB633902f00B87A43b27F80a31a60';
const abi = parseAbi(['function read() view returns (int224 value, uint32 timestamp)']);

const [value, timestamp] = await client.readContract({ address: SEI_USD, abi, functionName: 'read' });

const ageSeconds = Math.floor(Date.now() / 1000) - timestamp;
if (value <= 0n || ageSeconds > 24 * 60 * 60) {
  throw new Error(`Unusable price: ${value} (updated ${ageSeconds} seconds ago)`);
}
console.log(`SEI/USD: ${formatUnits(value, 18)} (updated ${ageSeconds} seconds ago)`);

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://evm-rpc.sei-apis.com');

const SEI_USD = '0x09c6e594DE2EB633902f00B87A43b27F80a31a60';
const feed = new ethers.Contract(
  SEI_USD,
  ['function read() view returns (int224 value, uint32 timestamp)'],
  provider
);

const [value, timestamp] = await feed.read();

const ageSeconds = Math.floor(Date.now() / 1000) - Number(timestamp);
if (value <= 0n || ageSeconds > 24 * 60 * 60) {
  throw new Error(`Unusable price: ${value} (updated ${ageSeconds} seconds ago)`);
}
console.log(`SEI/USD: ${ethers.formatUnits(value, 18)} (updated ${ageSeconds} seconds ago)`);

import time
from decimal import Decimal
from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://evm-rpc.sei-apis.com"))

SEI_USD = "0x09c6e594DE2EB633902f00B87A43b27F80a31a60"
abi = [{
    "type": "function", "name": "read", "stateMutability": "view", "inputs": [],
    "outputs": [{"name": "value", "type": "int224"}, {"name": "timestamp", "type": "uint32"}],
}]
feed = w3.eth.contract(address=SEI_USD, abi=abi)

value, timestamp = feed.functions.read().call()

age_seconds = int(time.time()) - timestamp
if value <= 0 or age_seconds > 24 * 60 * 60:
    raise ValueError(f"Unusable price: {value} (updated {age_seconds} seconds ago)")
print(f"SEI/USD: {Decimal(value) / 10**18} (updated {age_seconds} seconds ago)")