STAC

Connect a SpatioTemporal Asset Catalog (STAC) or STAC API to Felt. Configure credentials for the catalog and its linked assets.

Available on the Business and Enterprise plans. Compare plans

A SpatioTemporal Asset Catalog (STAC) describes geospatial files, such as satellite imagery. Connect a static catalog in JSON or a dynamic STAC API to find those files and add them to maps. Felt streams Cloud Optimized GeoTIFF (COG) assets without copying them. See the STAC specification and Stream large rasters.

Connect STAC

Follow the steps in Add a source, select STAC, and in Connection, enter the URL of your STAC catalog or API. If the catalog or its assets are private, add credentials:

• If the catalog or API needs authentication, select a type in API authentication and fill in its fields.

• If the assets need their own credentials, click Add credential in Asset credentials, select an Asset authentication type, and fill in its fields. Repeat for each set of credentials.

Credentials

A STAC source can have one credential for the catalog or API and any number of credentials for the assets its items link to. For example, a public STAC API can point to private assets in Amazon S3. API authentication and asset authentication offer the same types. Felt doesn't match asset credentials to buckets: for each asset, it tries the asset credentials in turn and uses the first one that works.

Type	Use it for	What to enter
None (public)	A catalog or assets that need no credentials. This is the default.	Nothing
AWS Assume Role	Assets in Amazon S3	A Role ARN and a Role session name. Set up the role as for an Amazon S3 source.
Azure Connection String	Assets in Azure Blob Storage	A connection string with a Read and List SAS. See Azure Blob Storage credentials.
Custom Headers	A catalog or server that takes a header, such as a bearer token	A Header name and a Value for each header, such as Authorization and Bearer {YOUR_AUTH_TOKEN}. Felt adds them to every request and hides the value after you save.
GCP Service Account JSON	Assets in Google Cloud Storage	The JSON key for a service account with the Storage Object Viewer role. See Google Cloud Storage credentials.