The Dummy Source emits a single seed record so a package can run without reading from an external source. Use it when the package is triggered by a webhook or schedule, or when a downstream component (for example a Python or REST API step) fetches the data itself.
When to use it
Add a Dummy Source when your package has no real source data to read, but still needs a source component to be valid. Common cases:
- Webhook-triggered packages where the payload is handled downstream.
- Schedule-driven packages that call out to an API or run a script.
- Packages where a Python script or REST API transformation pulls the data, and the source exists only to start the flow.
It replaces older workarounds that used a dummy file or dummy API source.
Add the Dummy Source
- In the package designer, open the Sources palette.
- Drag Dummy Source onto the canvas.
- Open the component. There is nothing to configure.
- Connect it to the next component in your package.
Output
The Dummy Source produces one record with a single field:
The seed field is a placeholder. Downstream components are expected to generate or fetch the data your package actually processes.
Limitations
- No connection or configuration options.
- Schema is fixed to one string field named
seed. You can map or drop it in a downstream Select transformation.
- Data preview is not available on this component.
Last modified on June 29, 2026
