draw.io

Create diagrams in chat, rendered as live interactive draw.io diagrams.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Create diagrams in chat, rendered as live interactive draw.io diagrams. 10,000+ searchable shapes.

    How to connect

    How to connect draw.io to Claude

    The server address to paste into Claude settings:

    https://mcp.draw.io/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect draw.io to ChatGPT

    The server address to paste into ChatGPT settings:

    https://mcp.draw.io/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect draw.io to Cursor

    The server address to paste into Cursor settings:

    https://mcp.draw.io/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (2)

    Raw names from tools/list. Only developers need these.

    create_diagramCreates and displays an interactive draw.io diagram. Accepts either draw.io XML or Mermaid.js syntax — provide exactly one. **Format decision — this is the first thing to settle before you write anything:** if the diagram type appears on the Mermaid list below, use `mermaid`. Only use `xml` when the diagram type isn't on that list (UI mockups, floorplans, cloud/network/electrical architecture with stencils, hand-placed UML, etc.) or when the user has explicitly asked for draw.io XML. **Use Mermaid** for the following diagram types (all rendered natively, no upstream mermaid runtime): - flowchart / graph (TD, LR, …) - sequenceDiagram - classDiagram - stateDiagram / stateDiagram-v2 - erDiagram - gantt - pie - journey (user-journey) - gitGraph - mindmap - timeline - quadrantChart - xychart-beta - sankey-beta - requirementDiagram - C4Context / C4Container / C4Component - block-beta - architecture-beta - packet-beta - kanban - radar-beta - treemap-beta - treeview-beta (draw.io-specific) - venn (draw.io-specific) — syntax: `venn` then `set A ["Label"]` for each set, `union A,B` for declared overlaps (informational), and `text A` / `text A,B` followed by `["Region label"]` for text inside a region. Do NOT use `A AND B[...]` or `A["..."]` shorthand — those lines are ignored. - ishikawa (draw.io-specific) - zenuml **Strong default: use Mermaid for every diagram type on that list above.** Mermaid is simpler, more reliable, and the native Mermaid layout handles positioning and routing for you. For a flowchart, state diagram, sequence, ER, class, gantt, gitGraph, mindmap, etc. — reach for the `mermaid` parameter, not `xml`. Do not default to XML for flowcharts. **Use XML** when the diagram type isn't on the Mermaid list above OR when the user explicitly asks for XML / draw.io format. Typical cases where XML is the right choice: - **UI mockups / wireframes / screen designs** — buttons, form fields, sidebars, modal dialogs (`
    search_shapesSearch the draw.io shape library by keywords. Returns matching shapes with their exact style strings, dimensions, and titles. Covers ~10,000 built-in stencils (cloud architecture, network topology, P&ID, electrical, Cisco, Kubernetes, BPMN) and, when those are sparse, supplements results with the draw.io icon service (brand/product logos and general-purpose concept icons, e.g. 'react', 'slack', 'shopping cart', 'solar panel'). Use ONLY for diagrams that need industry-specific, branded, or pictorial icons. Do NOT use for standard diagram types like flowcharts, UML, ERD, org charts, or mind maps — these use basic geometric shapes (rectangles, diamonds, circles, cylinders) that are already covered in the XML reference. Also skip if the user asks to use basic/simple shapes or says not to search. The style string from the results can be used directly in mxCell style attributes.