Government · head-to-head
City, Gdańsk vs EPA
Otwarty Gdańsk (Open Gdańsk) runs a standard CKAN 2.x installation; a live keyless GET against `ckan.multimediagdansk.pl/api/3/action/package_search` returned full JSON dataset metadata with a wildcard `Access-Control-Allow-Origin` header on both the plain response and an OPTIONS preflight. The catalogue covers Gdańsk municipal transit, budget, and environmental datasets, with individual resources downloadable as CSV, JSON, or XLSX depending on the publisher.
EPA's Envirofacts platform exposes the agency's environmental compliance and monitoring databases — air quality, drinking water systems, the Toxics Release Inventory, hazardous waste, and Superfund sites — through a keyless REST API at `data.epa.gov/efservice`. Any of the underlying tables can be queried by building a URL from the table name, filter columns, and an output format, with results returned as JSON, XML, CSV, or Excel. EPA's Developer Central site separately documents smaller topic widgets built on the same data.
| City, Gdańsk | EPA | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON, CSV, XLSX | JSON, XML, CSV, Excel |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
EPA supports 4 response formats, while City, Gdańsk offers fewer — pick EPA for more integration flexibility.