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mad-sol-dev

mad-invoice-mcp

by mad-sol-dev

MAD invoiceMCP server

Mechatronics Advisory & Design (M.A.D. Solutions) – JSON → LaTeX → PDF invoicing server with local file storage.

What is this?

MAD invoiceMCP is a small Model Context Protocol (MCP) server that lets you create, store, and render invoices for a single company using JSON data and LaTeX templates.

It is designed for local, single‑user workflows:

  • one repository and one .mad_invoice/ data directory

  • no multi‑tenant or multi‑project switching

  • no external database or cloud backend

Best fit: freelancers and small businesses who want to generate invoices on their own machine.

Not designed as:

  • a multi‑tenant system for tax advisors or agencies with many clients

  • a hosted SaaS product

  • a full accounting or ERP system


Key features

  • JSON → LaTeX → PDF invoice rendering pipeline

  • draft → final lifecycle with immutable final invoices

  • payment status tracking (open, paid, overdue, cancelled)

  • optional VAT handling and German §19 UStG ("small business") mode

  • language‑aware labels and dates (German / English)

  • simple web overview and detail pages for existing invoices

  • MCP tools for listing, reading, updating, and rendering invoices


Requirements

  • Python: 3.10 or newer (tested with 3.11)

  • LaTeX: a recent TeX Live release (2024 or newer recommended)

    • or use the Docker image, which already includes TeX Live

  • Optional: Docker, if you prefer not to manage Python and LaTeX locally

Write‑capable tools are disabled by default. To allow creating or updating invoices, set:

export MCP_ENABLE_WRITES=1

Quickstart

From the repository root:

docker build -t mad-invoice-mcp . docker run --rm \ -p 8000:8000 \ -v $(pwd)/.mad_invoice:/app/.mad_invoice \ -e MCP_ENABLE_WRITES=1 \ mad-invoice-mcp

Then open the web UI in your browser:

http://localhost:8000/invoices

The container image already includes a recent TeX Live installation, so you do not need LaTeX on the host.


Option B – Local MCP server (stdio)

Use this path if you have a compatible TeX Live installation on your machine.

  1. Create a virtual environment and install dependencies:

    python -m venv .venv source .venv/bin/activate # on Windows: .venv\Scripts\activate pip install -r requirements.txt
  2. Start the MCP server over stdio:

    MCP_ENABLE_WRITES=1 python -m bridge --transport stdio

Most MCP‑capable clients (Claude Desktop, Cline, Continue, etc.) can then be pointed at this server using their standard command/args configuration. See MCP client configuration for concrete examples.


Where to go next


Code generation notice

Most of this repository's code was originally produced with AI assistants. The project is maintained and reviewed by a human, but you should still treat it as experimental software and review it carefully before using it in production.


License

See LICENCE for licensing details.

-
security - not tested
A
license - permissive license
-
quality - not tested

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