Climatiq
Calculate the environmental footprint created by a broad range of emission-generating activities
API calculates the impact of common carbon-intensive activities in real time.
Cloverly API is a free Environment API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.

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Calculate the environmental footprint created by a broad range of emission-generating activities
API to calculate carbon (C02) emissions estimates for common C02 emitting activities
Yes. The Cloverly API is listed in the Environment 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 Cloverly API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Cloverly API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Cloverly API is served over HTTPS, so it's safe to use in production.