FOR AI AGENTS

Let your AI write the invoice

Tell ChatGPT, Claude, Codex or Cursor who to bill and for what. It sends back a link, and the editor opens filled in. Check it, then download the PDF.

Read https://invoiceize.com/SKILL.md and make an invoice for me

Free. No account, no API key. Your AI only builds the link; you download the PDF yourself.

Invoice Acme for the logo ($1,200) and brand guide ($450), 8.25% tax, net 30.

Your AI

Here's your invoice, ready to check and download: Open invoice INV-0042

HOW IT WORKS

  1. 01

    Paste the line

    Your AI reads SKILL.md: which fields an invoice has and how to put them in a link.

  2. 02

    It sends you a link

    It asks for anything it's missing, then gives you one link with your invoice inside.

  3. 03

    Check and download

    The editor opens filled in. Change anything, then download the PDF. Nothing to sign in to.

WHAT YOUR AI CAN MAKE

Ask it for What opens Page
An invoice The invoice editor with client, line items, tax and due date filled in /
A receipt The receipt editor with the payment date and how it was paid /receipt-generator/
A quote or estimate The quotation editor with a valid-until date /quotation-generator/
Any of these in your language The same editor in Chinese, Japanese, German or Spanish /de/ …
THE SKILL FILE

One page your AI reads

Plain Markdown at a fixed address. Install it as a skill if your AI supports skills, or just paste the line each time.

Open SKILL.md 
---
name: invoiceize
description: Make an invoice, receipt or
  quote with Invoiceize
---

## 2. Write the JSON
{ "to": { "name": "Acme Inc." },
  "items": [{ "description": "Logo design",
              "quantity": "1", "rate": "1200" }],
  "taxPercent": "8.25", "currency": "USD" }

## 3. Build the link
https://invoiceize.com/#fill=<base64url>

FAQ

Does it cost anything?

No. Making and downloading invoices is free, with or without AI.

Do I need an account or API key?

No. Your AI only builds a link. You open it in your own browser.

Where do my invoice details go?

They sit after the # in the link, which browsers don't send to the server when they load a page. The editor saves the invoice in your browser. If you use cloud sync, it can also sync to your account.

Can the AI download the PDF for me?

No. The PDF is made in your browser when you click Download, so you always see it first.

Which AIs work?

Any AI that can read a web page: ChatGPT, Claude, Codex, Cursor and others.

What if the link doesn't work?

The page tells you it couldn't read the details. Ask your AI to build the link again.