Real-time port congestion risk scores, ETA delays and waiting vessels for 15 global ports.
Aether-X Port Congestion API is a free Transportation API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.

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Predictive port congestion, ETA delay and freight volatility signals for 16 global ports
Yes. The Aether-X Port Congestion API is listed in the Transportation 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 Aether-X Port Congestion API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Aether-X Port Congestion API supports CORS, so front-end JavaScript can call it directly.
Yes. The Aether-X Port Congestion API is served over HTTPS, so it's safe to use in production.