
Sourced prop firm daily-loss and max-drawdown rules, plus a drawdown-room check.
FloorGuard API is a free Finance API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Free read-only JSON API with sourced prop firm drawdown and daily loss rules for 9 firms, plus a drawdown room checker. OpenAPI spec, CORS open, no key.
Details from floorguard-kappa.vercel.app.

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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 FloorGuard API is provided by FloorGuard (floorguard-kappa.vercel.app). Free read-only JSON API with sourced prop firm drawdown and daily loss rules for 9 firms, plus a drawdown room checker. OpenAPI spec, CORS open, no key.
Yes. The FloorGuard 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.
No. The FloorGuard API requires no authentication, so you can start making requests without signing up.
Yes. The FloorGuard API supports CORS, so front-end JavaScript can call it directly.
Yes. The FloorGuard API is served over HTTPS, so it's safe to use in production.