Product API platform

NorthGateOS

Make your own system NRS-compliant.

NorthGateOS API reference: sections for quickstart, authentication, headers and idempotency, errors and retries, and the invoice lifecycle. — The reference covers authentication, idempotency, retries and the full invoice lifecycle.

NorthGateOS platform endpoint documentation showing a liveness check and a key introspection call, each with request samples in cURL, Node and Python alongside sample JSON responses. — Every endpoint ships with request samples in cURL, Node and Python, and a sample response.

The NorthGateOS sign-in screen: work email, password, an option to stay signed in for thirty days, and sign in with a passkey. Beside it the platform states what it is — compliance infrastructure for Nigeria’s e-invoicing regime, validating, signing and transmitting invoices to the NRS through one API, with an audit trail of everything it did on your behalf. — Passkey sign-in on the workspace that holds your production keys.

NorthGateOS developer portal listing API keys with their environment, scopes, creation date and last use, and a sandbox-to-production toggle. — Sandbox and production keys, scoped per capability — validation, signing, lifecycle, exchange.

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Compliance, Delivered as an API

Connect your system to Nigeria’s e-invoicing requirements through a single REST API. Generate IRNs, validate invoice data, sign and transmit e-invoices to the Nigeria Revenue Service, while keeping a complete audit trail of each transaction and action.

Separate sandbox and production environments let your team build and test safely without affecting live operations, with API access controlled through scoped keys.

How an invoice clears

Scroll to see the whole diagram

Compliance deadlines do not move.

The Nigeria Revenue Service required large taxpayers to be live on the national e-invoicing system by 31 July 2026. If that date passed without you, the exposure is already running.

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