Duplo Dashboard API Overview

Endpoints for e-invoicing, customers, countries, expenses, payouts, your business, and banks

Every path starts with /api/v1, as in https://spend-api.tryduplo.com/api/v1/e-invoicing/invoices. Getting Started covers authentication and rate limits.

E-invoicing

These endpoints need e-invoicing on the business's plan and NRS setup completed in Duplo Dashboard, or they return 403. The guides are Issuing an E-Invoice, Transmitting an E-Invoice, and Managing Issued Invoices.

Reserve an IRN

Get the reference number a new invoice needs.

Create an invoice

Draft a new invoice.

Submit an invoice

Validate and sign in one call.

Transmit a signed invoice

Deliver it through NRS, by email, or both.

Get an invoice

Read one invoice by its IRN.

List invoices

Page through your invoices.

Reference data

The e-invoicing endpoints also return the values an invoice payload is built from, behind the same access checks. The taxes endpoint lists the taxes set up for your business alongside the NRS tax categories and their rates, and the product and service code endpoints list the values for an item's hsnCode and isicCode.

List taxes

Fetch the tax names and rates to put on invoice lines.

List product codes

NRS HS codes for an item's hsnCode.

List service codes

NRS service codes for an item's isicCode.

List tax categories

NRS tax categories with their published rates.

The remaining reference endpoints return NRS's own lists as NRS publishes them: quantity codes, countries, currencies, payment means, invoice types, and VAT exemptions. NRS's countries list is reference data only. For a customer's address, use the countries endpoints below.