Crypto market data: prices, trends, funding rates, sentiment, narratives and market regime.
Shumi API is a free Cryptocurrency API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Base URL, authentication, the response envelope, error codes and quotas for the Shumi API.
Details from docs.shumi.ai.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Bitcoin solo mining pool stats, per-address miner stats and an open dataset of solo-mined blocks
The Shumi API is provided by Shumi Docs (docs.shumi.ai). Base URL, authentication, the response envelope, error codes and quotas for the Shumi API.
Yes. The Shumi 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 Shumi API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Shumi API supports CORS, so front-end JavaScript can call it directly.
Yes. The Shumi API is served over HTTPS, so it's safe to use in production.