How to use the Printable Invoice agent skill

What is an agent skill, and what does this one do?

An agent skill is a folder of instructions and files that an AI agent can load when a task matches it. Instead of you explaining the layout every time, the agent follows the skill's template.

Once this skill is installed, the agent can turn your billing details into a single-page invoice. The layout includes an invoice header with the invoice number, date and due date, a From block and a Bill to block, a line-items table with descriptions, quantities, unit prices and amounts, a tax breakdown with right-aligned totals, and a payment instructions section.

• Print-friendly styling (@media print) with colour contrast kept for printing.
• Output is a layout template, so you can print it or save it as a document, not only read it on screen.
• The skill has no tax rules or validation of its own.

Install the Printable Invoice skill

Option 1: download the ZIP from this page and unzip it into your personal skills folder, ~/.claude/skills/. To install it for a single project instead, unzip it into that project's .claude/skills/ folder.

Option 2: in the Claude apps, open Settings → Capabilities → Skills and upload the ZIP there.

The package contains two files: SKILL.md and example.html. The example.html file shows what a finished invoice looks like.

• Personal install: ~/.claude/skills/
• Project install: the project's .claude/skills/ folder
• Claude apps: Settings → Capabilities → Skills, then upload the ZIP

How to trigger the skill with a natural request

You do not need a special command. Describe the invoice you want in plain language and mention that you need it printable or as an A4 invoice. The skill's tags include invoice and bill, so requests using those words are a good match.

Include the details the layout needs: your name and address, the client's details, invoice and due dates, each line item with quantity and unit price, the tax rate, and your payment instructions.

• "Make a printable invoice for Acme Ltd for 10 hours of design at 50 per hour, 20% tax, due in 30 days."
• "Create an A4 invoice I can print, with my bank details under payment instructions."
• "Turn this list of services into an invoice with line items, tax and totals."

Review and export the result

The output is HTML. Open it in a browser and check every figure before you send it, because the agent does not check your local tax requirements or validate the arithmetic against any rules.

To get a document, print the page from the browser or save it as PDF. The print styling is designed for A4 output.

• Check the invoice number, dates, names and addresses.
• Check that quantities times unit prices match the amounts and that the totals are correct.
• Confirm the tax breakdown and payment instructions are what you intend.

Safety notes: scripts and network

According to the listing, this skill does not run scripts and does not use the network. It also requires nothing beyond the skill files themselves.

The skill only lays out a document. It connects to no payment system, so it cannot take payments or run automated billing.

• Runs scripts: no
• Uses network: no
• Requires: nothing listed

Tips and limits

Use the skill for a clear, basic invoice. If you need a legally compliant tax invoice for a specific country, check your local requirements yourself, because the template includes no country-specific tax rules.

The skill is licensed under Apache-2.0. It is part of the nexu-io/html-anything project, in the next/src/lib/templates/skills/invoice path.

• Ask the agent to adjust the HTML if you need different fields, then re-check the output.
• Keep a copy of your final printed or PDF invoice for your records.
• For recurring billing or payments, use accounting or billing software instead.