InnarM/blank-invoice-maker-mcp

An MCP server that lets any AI assistant (Claude, and other MCP clients) create invoices with **Blank Invoice Maker** — the free, no-signup, no-watermark invoice generator.
Ask your assistant to make an invoice, and it returns a link that opens **blankinvoicemaker.com** with the invoice fully pre-filled, ready to review and download as a PDF.
> **Privacy by design.** The invoice data travels inside the link's URL fragment (#invoice=…) and is decoded entirely in your browser. Nothing is uploaded — consistent with Blank Invoice Maker's no-account, no-server-storage model.
Tools
| Tool | What it does |
| --- | --- |
| list_templates | Lists the industry invoice templates available at blankinvoicemaker.com/templates (slug, name, description, URL). |
| create_invoice | Builds an invoice from your details and returns a pre-filled blankinvoicemaker.com link to review and download. |
create_invoice example
> *"Invoice Globex LLC for 10 hours of design at $90/hr and one $120 hosting setup, net 14, in GBP."*
The assistant calls create_invoice with:
…and returns a https://blankinvoicemaker.com/#invoice=… link that opens the editor pre-filled.
Installation
Requires Node.js 18+.
Claude Desktop
Add to your claude_desktop_config.json:
Other MCP clients
Run the server over stdio:
How it works
create_invoice maps your input into the invoice structure used by blankinvoicemaker.com, compresses it with lz-string, and appends it to the site URL as a #invoice= fragment. Opening the link hydrates the editor in your browser — no signup, no watermark, no data leaving your machine.
Development
Keeping templates in sync
src/templates-data.ts is generated from the Blank Invoice Maker template registry:
Links
- **App:** https://blankinvoicemaker.com
- **Templates:** https://blankinvoicemaker.com/templates
- **Model Context Protocol:** https://modelcontextprotocol.io