Skip to content
ToolQivo

Invoice API Generator

Generate the API call that creates an invoice — Stripe, Xero, QuickBooks or your own REST API.

Invoice Tools Reviews Free · no sign-up

Or drop an invoice file here

Quick Tool Overview

The Invoice API Generator turns an invoice into ready-to-run code that creates it through an API — Stripe, Xero, QuickBooks Online or your own REST endpoint — in cURL, JavaScript, Python or PHP, with an OpenAPI 3.1 description for your own API.

What it does
Generates invoice API requests
You give it
An invoice as JSON or XML
You get back
Request code and an OpenAPI spec
Best for
Developers integrating invoicing
Invoice Tools Free, unlimited use No sign-up Runs in your browser

About the Invoice API Generator

Creating an invoice through an API is easy to describe and fiddly to get right. Stripe wants form-encoded amounts in minor units and invoice items created before the invoice. Xero wants an Invoices array with LineAmountTypes and account codes. QuickBooks wants SalesItemLineDetail with an item reference and an Amount that matches Qty times UnitPrice. Each gets rejected for different reasons.

Paste an invoice — the JSON the builders here export, or UBL, CII or generic invoice JSON — choose the API and the language, and this writes the request: the endpoint, the headers, the body mapped field by field, in cURL, JavaScript, Python or PHP. For your own API it writes the POST with an idempotency key and an OpenAPI 3.1 description of the endpoint, with the invoice schema, ready to drop into your documentation.

Credentials appear as environment variables, never inline, and each target lists what you still have to supply — a customer ID, an account code, a tenant. Everything is generated in your browser.

Key features of the Invoice API Generator

Four targets

Stripe, Xero, QuickBooks Online and custom REST.

Four languages

cURL, JavaScript fetch, Python requests and PHP cURL.

Mapped field by field

Minor units, line types and references handled per API.

Secrets kept out

Credentials read from environment variables.

OpenAPI 3.1

Document your own invoice endpoint in one download.

How to use the Invoice API Generator

  1. 1

    Paste the invoice

    Invoice JSON, UBL, CII or generic JSON. Sample loads one.

  2. 2

    Choose the API

    Stripe, Xero, QuickBooks Online, or your own REST endpoint.

  3. 3

    Choose the language

    cURL, JavaScript fetch, Python requests or PHP cURL.

  4. 4

    Fill in the placeholders

    Each API lists the IDs and credentials it still needs.

  5. 5

    Copy the code

    Or download the OpenAPI spec for your own API.

Frequently asked questions

No. It writes the code for you to run from your own server with your own credentials. Nothing is sent from this page.

Reviews of the Invoice API Generator

What people who use the Invoice API Generator think of it. Reviews come from visitors and are posted as written.

No ratings yet

Yours would be the first.

  • 5 0 reviews rated 5 stars
  • 4 0 reviews rated 4 stars
  • 3 0 reviews rated 3 stars
  • 2 0 reviews rated 2 stars
  • 1 0 reviews rated 1 star

Write a review

Used this tool? Your rating helps the next person decide.

Your rating

Plain text only — links, email addresses and HTML are not accepted. Your name and review are shown publicly; nothing else is collected. See the privacy policy.

0 reviews

Newest first

No reviews yet

Be the first to rate the Invoice API Generator. It takes half a minute and no account.

Write the first review

More invoice tools