This tool functions as a local Model Context Protocol (MCP) server, specifically designed to handle Guatemalan FEL (Factura Electrónica en Línea) invoices. It offers robust capabilities to validate FEL XML data, ensuring all required fields and financial totals (subtotal, VAT 12%, total) are correct. Additionally, it can transform these XML invoices into professionally branded PDF documents. Optimized for WSL (Ubuntu) or other Linux environments, it seamlessly integrates with MCP hosts like Claude Desktop, enabling advanced automation and interaction.