
Unified German city open data: weather, air quality, EV chargers, transit, demographics.
InfraNode API is a free Open Data API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Kostenlose, keylose Open-Data-API und MCP-Server für 84 deutsche Großstädte: Wetter, Luftqualität, ÖPNV-Echtzeit, Strompreis und mehr. Ohne API-Schlüssel, kommerziell nutzbar.
Details from infranode.dev.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Open datasets on AI policy, regulation and public-sector adoption in Germany and the EU
People groups of the world with the fewest followers of Christ
Korean market data: K-beauty/K-food products, Naver trends, stocks, real estate, weather
The InfraNode API is provided by InfraNode (infranode.dev). Kostenlose, keylose Open-Data-API und MCP-Server für 84 deutsche Großstädte: Wetter, Luftqualität, ÖPNV-Echtzeit, Strompreis und mehr. Ohne API-Schlüssel, kommerziell nutzbar.
Yes. The InfraNode API is listed in the Open Data category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The InfraNode API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the InfraNode API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The InfraNode API is served over HTTPS, so it's safe to use in production.