Build on ZUTAX
The ZUTAX public API powers e-invoicing integrations across QuickBooks, Xero, Odoo, Sage, and custom ERPs. Everything you need to ship is here.
Everything You Need to Integrate
From API reference to on-prem connectors — ship your FIRS-compliant e-invoicing integration faster.
API Reference
Full endpoint reference auto-generated from the live OpenAPI schema. Always in sync with production.
Quickstart
Issue and transmit your first invoice in under 30 minutes using bearer auth and the composite endpoint.
Webhooks
Receive invoice lifecycle events — signed, transmitted, failed, payment received.
SDKs
Official Python, PHP, JavaScript/TypeScript, .NET, and Java clients with typed payloads, retries, and built-in idempotency.
Connector Agent
SoonSingle-binary on-prem agent for Sage 300 and on-prem Odoo. Outbound HTTPS only — no firewall changes.
Marketplace Apps
Native apps for QuickBooks, Xero, Odoo, and Sage 300 — install ZUTAX from inside your accounting platform.
One endpoint to issue, sign, and transmit
POST a single JSON payload to the composite invoice endpoint. ZUTAX generates the IRN, signs it with FIRS, and transmits through the Peppol network — no multi-step orchestration required.
Read the Quickstart# Issue + sign + transmit in one call
POST /api/public/v1/invoices/transmit
Authorization: Bearer zk_live_<prefix>_<secret>
Content-Type: application/json
{
"external_id": "ERP-INV-2026-001",
"currency": "NGN",
"issue_date": "2026-05-02",
"customer": { "external_id": "ERP-CUST-9", "legal_name": "Acme Ltd", "tin": "12345678-1234" },
"lines": [...]
}
Ready to Start Building?
Get your API credentials from your ZUTAX workspace settings and ship your first integration today.