> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dalyenergy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Layout Data URL

> Get a presigned download URL for a layout's bulk data on S3

# GET /layouts/{layout_id}/data

Returns a time-limited presigned S3 download URL for the layout's bulk data file (table geometry, string positions, etc.).

## Notes

* The `layout_id` path parameter is the workspace-scoped layout index.
* Returns a JSON object with `dataUrl` (the presigned S3 URL) and `format` (the serialization format, e.g. `"json"` or `"arrow"`).
* Returns `404` if the layout does not exist or if no bulk data has been stored for the layout.
* The presigned URL is temporary and will expire. Generate a new one if the previous URL has expired.
* Use this endpoint when you only need the raw data file and do not need the full layout metadata returned by `GET /layouts/{layout_id}`.