Excalidraw Canvas

Render diagrams or any drawings as PNG via a hosted API. Always double-check coordinates of elements or arrows.

Render

RESULT=$(curl -s -m 60 -X POST https://excalidraw-mcp.up.railway.app/api/render \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -d '{"elements": [...]}')

# Save PNG
echo "$RESULT" | python3 -c "import json,sys,base64; d=json.load(sys.stdin); open('/tmp/diagram.png','wb').write(base64.b64decode(d['png']))"

# Get edit URL
echo "$RESULT" | python3 -c "import json,sys; print(json.load(sys.stdin)['editUrl'])"