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Fec drawio studio

Skill bovinphang/frontend-craft/skills/fec-drawio-studio

frontend-craft is a universal frontend plugin that brings the same opinionated engineering standards to all 15 AI coding assistants.

Install
npx -y skills add bovinphang/frontend-craft --skill fec-drawio-studio

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

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  • 19 stars19 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

What its author says it does

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Use when creating editable technical diagrams with draw.io / diagrams.net sources, including architecture diagrams, ERD, UML, sequence diagrams, flowcharts, ML model diagrams, official shape lookup, brand symbols, Graphviz auto-layout, codebase structure maps, .drawio validation, or draw.io CLI export fallback. Do not use for ordinary raster image generation, freehand sketches, interactive canvas/Three.js scenes, or decorative SVG animation. Chinese triggers include draw.io, diagrams.net, editable architecture diagrams, .drawio, ER diagrams, UML, sequence diagrams, auto layout, shape retrieval, code structure diagrams.

SKILL.md

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Editable technical chart workflow

Purpose

Generate, verify and export draw.io / diagrams.net technical diagrams that can be edited further.

Procedure

  1. Determine the chart route

    • Simple diagrams in Markdown that need long-term maintenance, Mermaid is preferred.
    • Use this workflow when you need official icons, swimlanes, complex layouts, layers/tags/metadata, editable PNG/SVG/PDF or .drawio sources.
    • When you need fast browser opening or sharing, use diagram-url.mjs to generate the URL; when you need local auditable delivery, always save the .drawio source.
    • If the user already has Mermaid or CSV content, they can use diagram-url.mjs --create --type mermaid|csv to import it to diagrams.net; when long-term maintenance or precise shape is required, convert it to XML.
    • If the draw.io MCP App/Tool has been configured on the current host, it can be used as a preview or editing entrance; this skill does not require the installation of MCP server.
    • Go the image generation route when you need photos, posters, visual concepts or bitmap editing.

  2. Create chart specifications

    • Clarify diagram type, audience, output format, node list, relationships, hierarchical grouping and save location.
    • Read diagram-patterns.md when the user specifies Flowchart, Architecture, Sequence, UML Class, ERD, Mindmap, Network Topology or ML/DL diagrams.
    • For process, workflow, approval, release or incident-response flowcharts that must open cleanly in diagrams.net, also read flowchart-quality.md.
    • To select XML, Mermaid, CSV, container, layer, tag, metadata or dark mode policy, read xml-and-mermaid.md.
    • When you need a specific vendor/cloud/network/flowchart shape, run shape-query.mjs; when you need AI, database or infrastructure brand symbols, run brand-symbols.mjs.

  3. Generate .drawio source

    • Draw.io XML can be manually generated for small drawings when exact node coordinates, sizes and connections are easier to reason about directly.
    • When there are more than about 15 nodes, dependency graphs or code structure graphs, first generate graph JSON and then use layout-graph.mjs for automatic layout.
    • For manually placed XML, align coordinates to a 10px grid, keep generous gaps between sibling nodes, use whiteSpace=wrap;html=1, prefer fontSize=14, encode forced line breaks as 
, and size containers to their content instead of leaving one-sided blank areas.
    • For manually authored flowcharts, keep pageWidth in the readable 600-800 range unless a wide cross-functional table is intentional; use swimlane containers for real stages and route loop or rollback edges around the margin with explicit waypoints.
    • Code structure diagram can be used first scan-js-modules.mjs, scan-ts-modules.mjs, scan-python-modules.mjs, scan-go-packages.mjs, scan-rust-modules.mjs or scan-python-classes.mjs to generate graph JSON.

  4. Checksum preview

    • Run after each generation of .drawio: 
      node skills/fec-drawio-studio/scripts/diagram-lint.mjs diagram.drawio --format markdown
    • If the machine has draw.io desktop CLI, do not embed XML when exporting the preview PNG, and control the width: 
      node skills/fec-drawio-studio/scripts/drawio-export.mjs diagram.drawio --format png --output diagram.png --width 2000
    • If CLI is not available, use diagram-url.mjs to generate diagrams.net viewer/editor URL; first read data-residency.md when strictly offline or data residency is sensitive.

  5. Deliver the final product

    • Save .drawio source files and PNG/SVG/PDF/JPG required by users.
    • If the final PNG is embedded in XML using draw.io -e, run after exporting: 
      node skills/fec-drawio-studio/scripts/drawio-export.mjs diagram.drawio --format png --output diagram.drawio.png --scale 2 --embed
node skills/fec-drawio-studio/scripts/png-embed-fix.mjs diagram.drawio.png
    • Report source files, exported files, verification results, and external dependencies that cannot be automatically verified.

Tool Resources

Tool script sharing studio-core.mjs. Offline query uses shape-index.json and brand-icons.json. Style preset resources include schema.json, default.json, corporate.json and handdrawn.json.

Constraints

  • Do not use draw.io as a normal image model; text-heavy or structured images must remain editable source.
  • Don't guess complex shape=mxgraph.* styles; use the shape query tool to get the official styles first.
  • The MCP server runtime dependency is not introduced for the draw.io workflow; MCP App/Tool is only used as an optional interoperability entry when the user environment already exists.
  • Mermaid/CSV URLs are import shortcuts and do not replace .drawio source files, lint and editable delivery.
  • Do not embed XML in preview PNGs; embedding is for final delivery only.
  • Graphviz, draw.io desktop, and networked branding icons are all optional external capabilities; they must be downgraded instead of retried when missing. drawio-export.mjs may detect local draw.io paths and print installation guidance, but it must not install draw.io automatically.
  • Brand icons and third-party shape indexes follow the source and licensing instructions in THIRD_PARTY_NOTICES.md.
  • When referring to the external draw.io MCP ecosystem, only absorb routes, constraints and interoperability experience, and do not copy its service implementation or long prompts.

Expected Output

Deliver editable .drawio source and required export format, with structural verification results. The diagram should have complete nodes, traceable connections, non-truncated labels, non-overlapping layouts, and a diagrams.net fallback that can be opened when external tools are missing.

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