One API connecting multiple accounting systems, now including Kleer.
One API connecting multiple accounting systems, now including Kleer.

Kleer joins API.1: more reach through your existing integration

Kleer is now connected to API.1 by Zwapgrid, bringing more businesses into our Open Accounting network.

Banks, fintechs and SaaS platforms can now work with Kleer data through the same unified API they use for other accounting systems.

Already connected? Expand your reach.

Existing Zwapgrid customers can reuse their API.1 integration to serve businesses using Kleer. There is no separate Kleer connector to build or maintain, so your team can focus on reaching new customers and improving your product.

Kleer is available now. Connect your customer through the onboarding flow and validate the operations your workflow needs. We help with test installations and test data so you can move from a test connection to production with confidence.

From invoice visibility to automated workflows.

The integration supports reading sales and supplier invoices, customers, suppliers and accounting reference data. You can also retrieve printable invoices and create draft sales invoices.

Support varies by operation. See the Kleer integration page for coverage, setup requirements and examples, or check the full API Coverage.

One connection. More opportunities.

Every new system makes your existing Zwapgrid integration more valuable. Kleer gives you another route to grow your customer base using the infrastructure you already have.

Already a customer? Connect Kleer in the Client Portal →

New to Zwapgrid? Start your 14-day free trial →

Zwapgrid
September 18, 2026

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