getPrice

const axios = require('axios');

(async () => {
    const response = await axios.post('https://rpc.particle.network/evm-chain', {
        chainId: 42,
        jsonrpc: '2.0',
        id: 1,
        method: 'particle_getPrice',
        params: [
            [
                'native', 
                '0x7968bc6a03017eA2de509AAA816F163Db0f35148',
            ],
            [
                'usd', 
                'cny',
            ],
        ],
    }, {
        auth: {
            username: 'Your Project Id',
            password: 'Your Project Server Key',
        },
    });

    console.log(response.data);
})();