I want to send a DM to the user, who invited/added the bot to his server.
I noticed that it's displayed in the audit log. Can I fetch that and get the user or is there a easier way to achieve that?

Example:

bot = commands.Bot()@bot.event
async def on_guild(guild, inviter):await inviter.send("Thanks for adding the bot to your server!")

With discord.py 2.0 you can get the BotIntegration of a server and with that the user who invited the bot.

Example

from discord.ext import commandsbot = commands.Bot()@bot.event
async def on_guild_join(guild):# get all server integrationsintegrations = await guild.integrations()for integration in integrations:if isinstance(integration, discord.BotIntegration):if integration.application.user.name == bot.user.name:bot_inviter = integration.user # returns a discord.User object# send message to the inviter to say thank youawait bot_inviter.send("Thank you for inviting my bot!!")break

Note: guild.integrations() requires the Manage Server (manage_guild) permission.

References:

• Guild.integrations
• discord.BotIntegration