Nostrum

An Elixir library for the Discord API. nostrum supports the following:

• Clean REST API implementation and ratelimiting.
• Documented structs and abstractions over API objects.
• Support for multi-node distribution of caches and internal state.
• Listening and sending voice data, with helpers for common functionality.
• Automatic, configurable maintenance of local caches of Discord data, with extensive query support and cache swapping functionality.

It is highly recommended to check out the release documentation first. It includes all of the information listed here and more. This README is for the master branch, which includes recent developments and may be unstable. If you want to live on the edge regardless, you can check the pre-release documentation.

Installation

It is recommended to use a stable release by specifying a published version from Hex:

def deps do
  [{:nostrum, "~> 0.8"}]
end

For stable installations, documentation can be found at https://hexdocs.pm/nostrum. However, if you want the latest changes and help test the library, you can also install directly from GitHub:

def deps do
  [{:nostrum, github: "Kraigie/nostrum"}]
end

Documentation for master can be found at https://kraigie.github.io/nostrum/.

Edit or create your config file at /config/config.exs. To run Nostrum you need the following two fields:

config :nostrum,
  token: "666" # The token of your bot as a string

Note: Due to Discord API changes, in order to receive message content (e.g. for non-slash commands or moderation tools), you need to have the "Message Content Intent" enabled on your Bot's application settings, and the :message_content intent specified in the [:nostrum, :gateway_intents] configuration key.

For more information about the differences between dev and stable as well as additional config parameters, please see the documentation.

Example Usage

The below module needs to be started in some fashion to capture events. See here for a full example.

defmodule ExampleConsumer do
  use Nostrum.Consumer

  alias Nostrum.Api

  def handle_event({:MESSAGE_CREATE, msg, _ws_state}) do
    case msg.content do
      "ping!" ->
        Api.create_message(msg.channel_id, "I copy and pasted this code")
      _ ->
        :ignore
    end
  end
end

You should start this under a supervisor or application:

defmodule MyApp.Application do
  use Application

  def start(_type, _args) do
    children = [ExampleConsumer]
    Supervisor.start_link(children, strategy: :one_for_one)
  end
end

For testing, you can start it from iex:

iex()> ExampleConsumer.start_link()
{:ok, #PID<0.208.0>}

Getting Help

If you need help, visit #elixir_nostrum on the unofficial Discord API guild!

License

MIT