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noahcraft-open

Invoice Generator

by noahcraft-open · GitHub ↗ · v1.0.0 · MIT-0
cross-platform ✓ Security Clean
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Install in OpenClaw
/install invoice-generator-jp
Description
Generate professional Markdown invoices with multi-currency support, tax, discounts, payment details, and clear formatting for freelancers and small businesses.
README (SKILL.md)

Invoice Generator

Create professional invoices in Markdown format. Supports multiple currencies, tax calculations, and standard invoice fields. Perfect for freelancers, consultants, and small businesses.

When to use

Use this skill when the user needs to:

  • Create a professional invoice for a client
  • Generate recurring invoices
  • Calculate totals with tax, discounts, and multiple line items
  • Format an invoice in a printable Markdown layout
  • Convert invoice details into a structured document

How it works

  1. Ask for sender details (business name, address, email, payment info)
  2. Ask for recipient details (client name, company, address)
  3. Ask for line items (description, quantity, unit price)
  4. Ask for currency, tax rate, discount, and payment terms
  5. Generate a complete professional invoice in Markdown

Invoice Template

# INVOICE

**Invoice #:** [AUTO-INCREMENT or USER-PROVIDED]
**Date:** [CURRENT DATE]
**Due Date:** [DATE + PAYMENT TERMS]

---

**From:**
[Business Name]
[Address Line 1]
[Address Line 2]
[Email] | [Phone]

**Bill To:**
[Client Name]
[Client Company]
[Client Address]
[Client Email]

---

## Items

| # | Description | Qty | Unit Price | Amount |
|---|-------------|-----|-----------|--------|
| 1 | [Service/Product] | [Qty] | [Price] | [Total] |
| 2 | [Service/Product] | [Qty] | [Price] | [Total] |

---

|  | |
|---|---|
| **Subtotal** | [CURRENCY] [AMOUNT] |
| **Tax ([RATE]%)** | [CURRENCY] [AMOUNT] |
| **Discount** | -[CURRENCY] [AMOUNT] |
| **TOTAL DUE** | **[CURRENCY] [AMOUNT]** |

---

## Payment Details

**Payment Method:** [Bank Transfer / PayPal / Stripe / etc.]
**Bank:** [Bank Name]
**Account:** [Account Number]
**Routing:** [Routing Number]

**Payment Terms:** [Net 30 / Due on Receipt / etc.]

---

*Thank you for your business!*

Supported Currencies

USD ($), EUR (€), GBP (£), JPY (¥), CAD (C$), AUD (A$), CHF, INR (₹), BRL (R$), KRW (₩), and more. Format amounts according to locale conventions.

Calculation Rules

  • Subtotal = Sum of (quantity × unit price) for all line items
  • Tax = Subtotal × tax rate
  • Discount can be percentage or fixed amount
  • Total = Subtotal + Tax - Discount
  • Round to 2 decimal places (0 for JPY/KRW)

Output

Generate a clean Markdown invoice that:

  • Is print-ready when rendered
  • Uses proper currency formatting
  • Includes all required fields
  • Has clear visual hierarchy with horizontal rules
  • Can be easily copied and converted to PDF
Usage Guidance
This skill appears to do what it claims and doesn't request system credentials or install code. However, it will ask you to type payment details (bank/account/routing) into the chat to include them on invoices — only do that if you are comfortable with your agent/chat logs storing that information. If you prefer, use placeholders or redact sensitive numbers until you paste them into a locally stored final invoice, or use a dedicated invoicing/payment service for handling actual payments. Always review the generated invoice for correct calculations, currency formatting, and privacy before sending it to a client.
Capability Analysis
Type: OpenClaw Skill Name: invoice-generator-jp Version: 1.0.0 The skill bundle is a purely instructional set of Markdown templates and guidelines for generating invoices. It contains no executable code, scripts, or network requests. The instructions in SKILL.md are well-aligned with the stated purpose of creating professional invoices and do not exhibit any signs of prompt injection, data exfiltration, or malicious intent.
Capability Tags
cryptocan-make-purchases
Capability Assessment
Purpose & Capability
The name/description match the SKILL.md: it generates Markdown invoices, handles currencies/taxes/discounts, and asks for sender/recipient/line items. It declares no binaries, env vars, or installs—consistent with an instruction-only formatter/generator.
Instruction Scope
Runtime instructions stay within the invoice-generation task (prompt for sender/recipient/items, compute totals, produce Markdown). The only caution: the skill explicitly asks for payment details (bank, account, routing), which is expected for invoices but is sensitive user-supplied data—users should be careful what they paste into the agent.
Install Mechanism
No install spec and no code files (instruction-only). This minimizes on-disk execution risk; nothing will be downloaded or installed by the skill itself.
Credentials
The skill requests no environment variables, credentials, or config paths (appropriate). However, it prompts users to provide payment/account information within the chat flow—these are sensitive inputs provided by the user, not environment secrets, so treat them accordingly.
Persistence & Privilege
always is false and the skill has no install/install-time behavior. It does not request elevated or persistent platform privileges and does not modify other skills or system settings.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install invoice-generator-jp
  3. After installation, invoke the skill by name or use /invoice-generator-jp
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release: professional invoice generation with multi-currency, tax, discounts
Metadata
Slug invoice-generator-jp
Version 1.0.0
License MIT-0
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is Invoice Generator?

Generate professional Markdown invoices with multi-currency support, tax, discounts, payment details, and clear formatting for freelancers and small businesses. It is an AI Agent Skill for Claude Code / OpenClaw, with 55 downloads so far.

How do I install Invoice Generator?

Run "/install invoice-generator-jp" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Invoice Generator free?

Yes, Invoice Generator is completely free, licensed under MIT-0. You can download, install and use it at no cost.

Which platforms does Invoice Generator support?

Invoice Generator is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Invoice Generator?

It is built and maintained by noahcraft-open (@noahcraft-open); the current version is v1.0.0.

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