Apps and integrations overview
Apps in the sidebar is where you connect other systems to OneBooks. Search by name, category or feature, and filter by Installed, POS, E-Commerce, Migration or Apps.

Two ways integrations post to your books
Section titled “Two ways integrations post to your books”| Kind | Integrations | What lands in OneBooks |
|---|---|---|
| Document-level | LithosPOS and apps built on the developer platform | Real invoices, payments and returns, one per POS sale — with customers, items and receipts. |
| Daily summary | Shopify, Square, Clover, Lightspeed, Loyverse | One balanced journal entry per store per day (a Z-report): sales by tax rate, tax collected, tips, and cash or bank by payment type. |
| Migration | Tally, spreadsheet import | Master data, opening balances and, for Tally, full voucher history. |
| Connected apps | Claude ChatGPT OpenClaw and other OAuth apps | Read reports and create proposals through the API — see Connected apps and OAuth and Connect Claude, ChatGPT and other AI agents. |
What every sync guarantees
Section titled “What every sync guarantees”- No double posting — each day (or each POS sale) is recorded once, even if a sync runs twice.
- Balanced entries — every posting debits and credits equal amounts; the tax collected goes to the tax account and appears on your tax report.
- Reversible re-syncs — re-syncing a day reverses the earlier entry and posts a fresh one; nothing is edited in place.
- Period locks apply — a sync cannot post into a locked fiscal year.
Related
Section titled “Related”Cash and bank accountsWhere POS tenders are mapped to.