4conta REST API and webhooks — connect your ERP, CRM or proprietary app

If your company already runs on an ERP, a CRM or a custom app, you don't need to double-enter data. The 4conta API lets you submit invoices, pull journals and receive status notifications via webhooks — all documented in one place.

See accounting plans Talk to the tech team

Key points of the 4conta API

REST API with OAuth2

Endpoints for invoice issuance, e-Invoice transmission, payment collection, reconciliation status and journal export. Generous rate limit for subscription clients.

Webhooks for key events

Instant notification for invoice issued, invoice paid, SPV error, return filed. HMAC-signed JSON for verification.

OpenAPI 3 docs and SDKs

OpenAPI 3 spec importable in Postman, SDKs for Node.js, Python, PHP and C#. Full examples for the usual flows.

Sandbox separate from production

Sandbox environment with demo data and simulated SPV — test the integration without generating real documents in the company journals.

Standard integration takes 3-5 days for a tech team familiar with REST APIs. The 4conta firm can allocate dedicated technical support for go-live, at no extra cost.

Frequently asked questions about API and webhooks

Is there a rate limit?−

Standard rate limit: 60 req/min per token, up to 5,000 req/hour. For heavy integrations (over 1,000 invoices/day) we allocate a token with a dedicated rate limit.

Can I consume received invoices from SPV via API?+

Do you support GraphQL or only REST?+

Wire your existing system straight into the firm's accounting

The 4conta firm allocates dedicated tech support during the integration window, at no extra cost.

See accounting plans Talk to the tech team

Invoicing and accounting

4conta's modules cover the full administrative and fiscal cycle of your company: invoice issuing, primary and management accounting, payroll with monthly declarations, ANAF reporting (D300, D394, D390, SAF-T), SMS and WhatsApp notifications, online card payments and email hosting on your domain.

You activate only the modules you need and pay strictly for what you use — no extra hours billed for recalculations, no hidden add-ons and no monthly negotiations. We handle the migration from your old app in the first few days, keeping document numbering and the full accounting history.

Modular activation: start with simple invoicing, add accounting when you want, switch on payroll or online payments only if you need them — you don't pay for what you don't use.

Compliance included from day one: e-Factura, e-Transport, SAF-T D406, monthly and annual returns, payroll with CASS/CAS — all part of the subscription, no surprises.

Support in your language from real people: in-house tech team and CECCAR-licensed accountants available on business days, with a reply within two hours.

Switch from SAGA, Smartbill, Oblio or any other app in less than a week — we take over the complete data and keep your invoice numbering.

Create a free account