| name | excalidraw-dag |
| description | Create very clean, legible Excalidraw DAG/system diagrams for pi-notes. Use for architecture diagrams, feedback loops, data/control flow, state/lifecycle maps, or any request for a simple Excalidraw diagram where readability matters. |
| disable-model-invocation | true |
Excalidraw DAG
Create concise Excalidraw diagrams that explain systems. Prefer DAGs.
Default shape
Use this unless the user asks otherwise:
- left-to-right flow
- 4–8 boxes max
- one concept per box
- short labels: 1–3 words plus optional tiny subtitle
- straight arrows
- no icons unless they clarify
- muted fills, dark text, lots of contrast
- output under
docs/diagrams/*.excalidraw
- link from a Brain entry so it renders inline in
/notes
Hard rules
- Legibility beats completeness.
- Prefer deleting nodes over shrinking text.
- Do not make spaghetti. If edges cross, change layout or split the diagram.
- Avoid decorative bullshit: shadows, gradients, cute icons, crowded legends.
- Use
fontFamily: 5 for all text.
- Keep generated files valid Excalidraw JSON.
- Do not paste huge Excalidraw JSON into chat.
DAG layout recipe
- Extract nodes: actors, services, artifacts, stores, outputs.
- Pick one primary direction: usually left → right.
- Arrange by lifecycle stage, not implementation package.
- Draw only the main edges needed to explain causality.
- Label edges with verbs only when ambiguity remains.
- Add receipts/logs as small bottom-row boxes if useful.
pi-notes inline rendering
To show a diagram inside a note, add a fenced code block containing the diagram path:
docs/diagrams/example.excalidraw
The Document Host renders that path inline in the note route.
Good output summary
Always report:
- diagram file path
- Brain entry that links it
- local note URL
- element count
- what the diagram intentionally omits
Useful current reference
- Diagram note:
.brain/resources/excalidraw-diagrams.svx
- Local URL:
http://127.0.0.1:4188/notes/resources/excalidraw-diagrams
- Example diagram:
docs/diagrams/pi-notes-feedback-loop.excalidraw
