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Sync2Books is a unified API that lets your application sync financial data to accounting systems (QuickBooks Online, Xero, Sage) and keep your customers tax-compliant with KRA eTIMS in Kenya — without building against each system yourself.

Quickstart

Get an API key, connect a system, and make your first call in five minutes.

Authentication

The API key, the optional request signature, and your client secret — shared by every product.

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Start with the core concepts

Everything below is built on the same foundation. Learn it once; it applies to every product.

Companies & connections

The shared object model: organizations, applications, companies, connections.

The sync model

Submit, push, confirm — how asynchronous syncs and batches work.

Environments & base URLs

Development vs production, and the correct base URL.

Errors & rate limits

The consistent error shape and throttling headers.

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Products

Expenses

Write categorized expenses, bills, and receipts to your customers’ accounting software.

eTIMS compliance (Kenya)

Register items, manage stock, and issue KRA-signed sales and credit notes.

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Build the connection UI

Link component

Drop-in UI to connect accounting systems — React, Vue, Angular, Svelte.

QuickBooks Online

Setup, FAQs, and reference for the QuickBooks Online integration.

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Support