# Free Finance APIs

Page: https://free-web-services.com/web-services/unit-convertors/fiinance/

Financial APIs.

## Services

| Service | API key | Formats | Free use |
|---|---|---|---|
| [Coin Boss API](https://free-web-services.com/web-services/unit-convertors/fiinance/coin-boss-api.md) | Not needed | JSON | The documented endpoints are currently free to use. |

## Questions

**Which free finance APIs work without an API key?**  
Coin Boss API works without a key, according to its documentation. Most keyless services ask you to keep the number of requests reasonable, and some ask for a User-Agent that names your app.

**Are these finance APIs really free?**  
The services here can be used without paying, at least on a free plan or free tier, often with limits such as a number of requests per day or non-commercial use only. The table above quotes what each service says about its free use; check the provider's own terms before you rely on it.

**How up to date is this list?**  
The address of every service is checked about once a week, and services that stop working or stop being free are removed. This list last changed on November 1st, 2026.