FinBridge
Official-source financials, segments, valuation, peers and prices for KR, US, JP, TW companies

Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto.
Finnhub API is a free Finance API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Finnhub - Free APIs for realtime stock, forex, and cryptocurrency. Company fundamentals, Economic data, and Alternative data.
Details from finnhub.io.

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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.
Official-source financials, segments, valuation, peers and prices for KR, US, JP, TW companies
Front accounting is multilingual and multicurrency software for small businesses
The Finnhub API is provided by Finnhub (finnhub.io). Finnhub - Free APIs for realtime stock, forex, and cryptocurrency. Company fundamentals, Economic data, and Alternative data.
Yes. The Finnhub API is listed in the Finance 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 Finnhub API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Finnhub API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Finnhub API is served over HTTPS, so it's safe to use in production.