PolyKal Fees

Kalshi & Polymarket trading fee rates and formulas as verified JSON.

PolyKal Fees 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.

Authentication: None required
HTTPS: Yes
CORS: Yes
Category: Finance

Visit documentation ↗polymarket-kalshi.com

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PolyKal Fees API FAQ

Is the PolyKal Fees API free?

Yes. The PolyKal Fees 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.

Does the PolyKal Fees API require an API key?

No. The PolyKal Fees API requires no authentication, so you can start making requests without signing up.

Can I call the PolyKal Fees API from the browser?

Yes. The PolyKal Fees API supports CORS, so front-end JavaScript can call it directly.

Does the PolyKal Fees API support HTTPS?

Yes. The PolyKal Fees API is served over HTTPS, so it's safe to use in production.