FAQ
1. What is the difference between the Web API and the Expert API? Which one should I use?¶
| Web API | Expert API | |
|---|---|---|
| Access | HTTP requests | Direct PostgreSQL connection |
| Account | Data Consumer or Data Supplier | Expert |
| Credentials | API token | Database username and password |
| Speed | Standard | Significantly faster, especially for large datasets |
| Best for | Applications, dashboards, integrations | BI tools (Tableau, Power BI), complex SQL queries |
| QGIS / ArcGIS | Yes, via WFS/WMS | Yes, via direct database connection |
| Unique features | WFS, WMS, WCS, events endpoint, file uploads | Full SQL access, deploying calculations |
2. Is a specific data source connected to Nexus?¶
Check the Data catalog for an overview of all public data sources.
You can also query the API directly - see the sync tasks example for how to list available data sources, or use ?search= to filter by name.
3. How do I find which parameters are available for a specific topic?¶
Use ?search= on the feature types endpoint. See Browsing timeseries and raster parameters.
4. How do I change my password?¶
This can be done in two ways: go the password reset page, or go to nexus.stellaspark.com (and then log out, and click 'forgot password')