credit-note

Enables issuing credit notes and credit memos against an invoice or standalone as revisable drafts that can be finalized into frozen numbered documents, then rendered as Markdown or printable HTML with totals broken down by currency, reason and month. All amounts are handled as integer minor units and all data stays local, so nothing is sent anywhere.

Enables creation and management of invoices with JSON storage and LaTeX-based PDF rendering. Supports draft creation and professional PDF generation through customizable LaTeX templates.

Enables preparing and issuing ARCA Factura C invoices via the official RCEL protocol, with a human-approval workflow for preview before issuance and the ability to query previously issued invoices.

Enables AI agents to manage compliant e-invoicing (Factur-X, EN 16931) by creating, issuing, sending, and tracking invoices, quotes, and retainers through natural language via the Model Context Protocol.