er-diagram

Consistent entity-relationship diagrams from a schema description.

Before you start

• Read references/shared/bridge.md (bundled with this skill), references/shared/style.md, references/shared/diagramming.md.
• Read ./reference.md — entity-card format and cardinality notation.

Target document

Convention: ~/canvas/diagrams/<model>-er.tldraw. Locate via api.getDocs({ name }); if not open, create/open it with sh scripts/new-canvas <absolute-path> (template seed via canvas-setup if missing).

Input