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Nex Invoice Bot Pattern
by Nex AI
A Belgian-compliant, JSON-backed invoicing system with VAT-regime toggles and sequential numbering logic.
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See it in action
You say
I'm starting a freelance business in Belgium under the kleine onderneming regime. Set up a system to manage my clients and generate compliant 0% VAT invoices.
Your agent does
I've generated your invoicing system:
config.py: Set to Kleine Onderneming (0% VAT).numbering.py: Implements YYMMDDXXX sequential logic.pdf_generator.py: Includes mandatory Belgian exemption footer.data_store.py: JSON-based CRUD for your records. Ready to create your first invoice?
What you get
About this skill
What it does
The Nex Invoice Bot Pattern is a specialized tool for Belgian freelancers and agencies to automate their billing without the overhead of a traditional database. It generates a complete, JSON-backed invoicing system that handles client management, project tracking, and compliant PDF generation.
Supported tools
- Data Management: Flat-JSON storage for clients, projects, and invoices.
- Compliance: Belgian-specific VAT logic and sequential invoice numbering.
- PDF Generation: ReportLab integration for professional, ready-to-send invoices.
- Front-end: Optional integration with Telegram for invoice creation on-the-go.
Why use this skill
Prompting an AI to "write an invoice" often results in illegal numbering or missing legal mentions. This skill enforces strict Belgian compliance rules: a global, gap-free numbering sequence (YYMMDD + 3-digit counter) and a toggle for "Kleine Onderneming" (0% VAT exemption) including the mandatory legal footer or standard 21% VAT calculations.
What the output looks like
You receive a modular Python codebase including a data store CRUD layer, a dedicated numbering engine, and a PDF generator. It ships with sample JSON schemas so you can start billing immediately by just filling in your IBAN and VAT number in the config file.
Built by Nex AI. More skills and info at nex-ai.be and slopsome.com.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Verified clean 9 days ago
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- Secure checkout via Stripe
Creator
Founder of Nex AI. I build production-grade Claude Skills from systems that actually run: multi-tenant SaaS, Telegram agents, Raspberry Pi infrastructure, 3D multiplayer rooms. Every skill ships battle-tested patterns, not theory. 33+ open source skills published, commercial catalog growing.
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