Invoice Generator

**Quick judgment:** A focused, practical tool for turning well-structured JSON data into professional PDF invoices. It fits naturally into automated or programmatic workflows but expects the caller to manage data correctness and calculations. **Strengths & advantages** - Clean separation of responsibilities: you supply validated, computed invoice data; the skill handles layout and PDF generation. - Works well in pipelines: can read from stdin, file paths, or named configs, and returns the generated PDF path. - Auto-versioned output filenames prevent accidental overwrites while maintaining predictable paths. - Clear error codes (invalid JSON vs. PDF generation failure) support robust error handling in larger workflows. **Risks / limitations** - Requires strict adherence to the JSON schema; malformed or incomplete data will cause failures. - No visible built-in logic for computing totals, taxes, or discounts—those must be computed upstream. - Depends on external tooling (Node.js dependencies and weasyprint); environment misconfiguration will break generation. - Limited information on customization (branding, multi-language layouts, complex tax regimes), so advanced invoicing scenarios may need template or code changes. **Recommended scenarios** - You already have or can easily produce structured invoice JSON from another system and just need a reliable PDF rendering step. - You want reusable invoice/client templates via JSON configs for repeated, consistent billing. - You are building an automated billing pipeline in OpenClaw where this skill is the terminal step that outputs a ready-to-send PDF invoice.