Dagster

Build asset-based data pipelines with Dagster and the dg CLI. Creates projects, defines software-defined assets, schedules, sensors, and components, then debugs materializations and project structure.

Maintained by Dagster Labs, this skill provides expert guidance for the Dagster orchestrator and dg CLI. It scaffolds projects, defines software-defined assets and asset checks, wires up schedules, sensors, jobs, and components, and debugs materialization failures — with deep knowledge of Dagster concepts and project layout.

When to use

Use when building Dagster assets, schedules, sensors, or components, scaffolding a new Dagster project, or debugging materializations and project structure.

Examples

Define an asset

Create a software-defined asset

Create a Dagster asset that loads raw events from S3 and a downstream asset that aggregates daily metrics, with an asset check on row counts

Add a schedule

Run assets on a cadence

Add a Dagster schedule that materializes my daily_metrics asset every morning at 6am UTC

Debug materialization

Diagnose a failure

My Dagster asset materialization is failing. Inspect the project, find the broken dependency, and fix it