Finance — entry 020 of 47
Front Accounting APIs
FrontAccounting is a free, open-source, self-hosted double-entry accounting system for small businesses, and SimpleAPI is a community-contributed module (still distributed on GitHub, last released 2023) installed by copying its files into your own FrontAccounting deployment. It exposes sales, customers, inventory, suppliers, and general-ledger data as JSON, authenticated per request with X-COMPANY/X-USER/X-PASSWORD headers rather than a hosted OAuth flow, since there is no central vendor-run API to authorize against — and its source ships no CORS handling, so a stock install sends no Access-Control-Allow-Origin header.
GreatAPIs Score
Embed this badge
<a href="https://greatapis.com/api/front-accounting-apis/"><img src="https://greatapis.com/badge/front-accounting-apis.svg" alt="Scored 78 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.