Discord Alerter

Sending automated alerts to a Discord channel.

The DiscordAlerter enables you to send messages to a dedicated Discord channel directly from within your ZenML pipelines.

The discord integration contains the following two standard steps:

  • discord_alerter_post_step takes a string message, posts it to a Discord channel, and returns whether the operation was successful.

  • discord_alerter_ask_step also posts a message to a Discord channel, but waits for user feedback, and only returns True if a user explicitly approved the operation from within Discord (e.g., by sending "approve" / "reject" to the bot in response).

Interacting with Discord from within your pipelines can be very useful in practice:

  • The discord_alerter_post_step allows you to get notified immediately when failures happen (e.g., model performance degradation, data drift, ...),

  • The discord_alerter_ask_step allows you to integrate a human-in-the-loop into your pipelines before executing critical steps, such as deploying new models.

How to use it


Before you can use the DiscordAlerter, you first need to install ZenML's discord integration:

zenml integration install discord -y

See the Integrations page for more details on ZenML integrations and how to install and use them.

Setting Up a Discord Bot

In order to use the DiscordAlerter, you first need to have a Discord workspace set up with a channel that you want your pipelines to post to. This is the <DISCORD_CHANNEL_ID> you will need when registering the discord alerter component.

Then, you need to create a Discord App with a bot in your server .

Note in the bot token copy step, if you don't find the copy button then click on reset token to reset the bot and you will get a new token which you can use. Also, make sure you give necessary permissions to the bot required for sending and receiving messages.

Registering a Discord Alerter in ZenML

Next, you need to register a discord alerter in ZenML and link it to the bot you just created. You can do this with the following command:

zenml alerter register discord_alerter \
    --flavor=discord \
    --discord_token=<DISCORD_TOKEN> \

After you have registered the discord_alerter, you can add it to your stack like this:

zenml stack register ... -al discord_alerter

Here is where you can find the required parameters:


Open the discord server, then right-click on the text channel and click on the 'Copy Channel ID' option.

If you don't see any 'Copy Channel ID' option for your channel, go to "User Settings" > "Advanced" and make sure "Developer Mode" is active.


This is the Discord token of your bot. You can find the instructions on how to set up a bot, invite it to your channel, and find its token here.

When inviting the bot to your channel, make sure it has at least the following permissions:

  • Read Messages/View Channels

  • Send Messages

  • Send Messages in Threads

How to Use the Discord Alerter

After you have a DiscordAlerter configured in your stack, you can directly import the discord_alerter_post_step and discord_alerter_ask_step steps and use them in your pipelines.

Since these steps expect a string message as input (which needs to be the output of another step), you typically also need to define a dedicated formatter step that takes whatever data you want to communicate and generates the string message that the alerter should post.

As an example, adding discord_alerter_ask_step() to your pipeline could look like this:

from zenml.integrations.discord.steps.discord_alerter_ask_step import discord_alerter_ask_step
from zenml import step, pipeline

def my_formatter_step(artifact_to_be_communicated) -> str:
    return f"Here is my artifact {artifact_to_be_communicated}!"

def my_pipeline(...):
    artifact_to_be_communicated = ...
    message = my_formatter_step(artifact_to_be_communicated)
    approved = discord_alerter_ask_step(message)
    ... # Potentially have different behavior in subsequent steps if `approved`

if __name__ == "__main__":

For more information and a full list of configurable attributes of the Discord alerter, check out the SDK Docs .

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