Why AI agents can't draw SVG (and what to do instead)

Short summary

Language models excel at describing structure but fail at spatial reasoning needed for SVG/diagram layout. The solution: have the model emit clean, typed JSON describing diagram structure, then hand layout to a deterministic engine using graph algorithms and native rasterization. Glyphic implements this pattern across 18 diagram types, available as an MCP server, npm library, or self-hosted API.

• •LLMs can't do spatial reasoning for diagrams — they predict tokens, not pixels
• •Solution: emit typed JSON for structure, use deterministic layout engine for positioning
• •Glyphic implements this across 18 diagram types, integrates with Claude Code as MCP server

Generated with AI, which can make mistakes.