Cryptocurrency Information.
BitPanda API is a free Cryptocurrency API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Migrating from the legacy API - Bitpanda API
Details from developers.bitpanda.com.

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.
Real-Time Cryptocurrency derivatives trading platform based in Hong Kong
Live yields on BTC, ETH and stablecoins across DeFi and CeFi, with an A-D risk grade per offer
The BitPanda API is provided by Bitpanda API (developers.bitpanda.com). Migrating from the legacy API - Bitpanda API
Yes. The BitPanda API is listed in the Cryptocurrency 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 BitPanda API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the BitPanda API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The BitPanda API is served over HTTPS, so it's safe to use in production.