Xlsx Generator

This is a solid utility for programmatic Excel file generation in Deno. It handles two main workflows: populating branded templates by finding and replacing placeholders like {{REPORT_TITLE}}, and creating spreadsheets from scratch using JSON specs. The template mode is smart because you can analyze existing files first to see what's replaceable before generating output. Supports formulas, multiple sheets, column widths, and freeze panes. The JSON specification format is straightforward if you've worked with spreadsheet data before. Best for automated reporting workflows where you need consistent formatting or have to churn out monthly reports from the same template. Limited support for pivot tables and charts, and it only handles XLSX, not the older XLS format.

Install to Claude Code

npx -y skills add jwynia/agent-skills --skill xlsx-generator --agent claude-code