Ascii Diagram Validator

Checks ASCII box-drawing diagrams in markdown files for alignment issues and broken connections. You point it at docs/ARCHITECTURE.md or similar files, and it outputs compiler-style errors with line and column numbers for misaligned verticals, dangling edges, and invalid junctions. Supports both single and double-line Unicode box characters (┌─┐│ and ╔═╗║). Honestly most useful right before you commit documentation, since these diagrams are easy to break when editing and hard to debug by eye. Exit codes work with CI if you want to enforce clean diagrams. Won't catch aesthetic spacing problems, just structural breaks.

Install to Claude Code

npx -y skills add terrylica/cc-skills --skill ascii-diagram-validator --agent claude-code