psnchecker.py

import discord
import asyncio
import requests
import json

client = discord.Client()

def check_psn(psn):
    response = requests.post('https://accounts.api.playstation.com/api/v1/accounts/onlineIds', json={"onlineId": psn, "reserveIfAvailable": False})
    return response.status_code != 401 and response.status_code != 400


@client.event
async def on_ready():
    print('Logged in as')
    print(client.user.name)
    print(client.user.id)
    print('------')

@client.event
async def on_message(message):
    if message.content.startswith('!check'):
        splits = message.content.split()
        if len(splits) != 2:
            return
        psn = splits[1]
        if check_psn(psn):
            await client.send_message(message.channel, '{0} is available'.format(psn))
        else:
            await client.send_message(message.channel, '{0} is taken'.format(psn))

client.run('token')