dagster-slack

What it is and what it does

dagster-slack is a Dagster integration that wraps the Slack SDK to enable data pipelines to send notifications and messages to Slack. It provides a resource that can be used within Dagster assets and ops to post alerts, status updates, or data summaries directly to Slack channels, making it easy to integrate Slack notifications into your orchestrated data workflows.

The package is part of the broader Dagster ecosystem and depends on both dagster and slack-sdk. It's designed for teams running Dagster pipelines who want to notify stakeholders via Slack when assets complete, fail, or reach certain conditions. The integration is actively maintained and supports Python 3.10 through 3.14.

Use it for:

• Send Slack alerts when a Dagster asset fails or completes successfully in production.
• Post data quality check results to a Slack channel for team visibility.
• Notify stakeholders when a critical data pipeline reaches a specific milestone.
• Log pipeline execution summaries to Slack for monitoring and debugging.
• Integrate Slack notifications into multi-step data workflows for real-time team communication.

Worth the install?

AI-flagged interpretation of the facts on this page — verify before relying

Provides a Slack client resource for Dagster data pipelines to post messages and notifications to Slack channels.

Yes, if you run Dagster pipelines and want to integrate Slack notifications. The package has low install friction, active maintenance, permissive licensing, and no known vulnerabilities. It's a straightforward wrapper around slack-sdk that fills a common need for pipeline observability. Install it only if you have a Slack workspace and need to send notifications from your Dagster workflows.

Install

dagster-slack on PyPI

pip install dagster-slack

uv add dagster-slack

poetry add dagster-slack

Installing dagster-slack

Before you install

Low friction install with two runtime dependencies (dagster and slack-sdk). Package is actively maintained with a release on 2026-08-14, and the parent Dagster project shows strong community engagement with 15996 GitHub stars.

License in practice

Apache-2.0 licensed, a permissive open-source license that allows commercial use, modification, and distribution with minimal restrictions.

Quickstart

pip install dagster-slack

from dagster_slack import SlackResource
from dagster import asset, define_asset_job

@asset
def my_asset():
    return "data"

slack_resource = SlackResource(token="xoxb-...")
# Use in Dagster ops/assets to send Slack messages

Requires a Slack workspace and a bot token (xoxb-...) to authenticate with the Slack API.

Verify before relying

• Specific Slack message formatting or template capabilities beyond basic posting.
• Whether the resource supports threaded messages, file uploads, or rich formatting.
• Error handling and retry behavior when Slack API calls fail.

Package facts

Evidence: dagster_slack-0.29.18-py3-none-any.whl

Tags

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