INDIVIDUAL MCP TOOL

canvas_validate_canvas

Check the canvas for structural problems (disconnected nodes, circular data flow, broken references) and quality problems (unlabelled edges, tables without columns).

datadef.ionone authenticationAvailability not checked

LIVE ENDPOINT

https://datadef.io/mcp

No auth detected

Connect to this endpoint to inspect the live schema for canvas_validate_canvas and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

Parent server

datadef.io

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.datadef]
url = "https://datadef.io/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "datadef": {
      "type": "http",
      "url": "https://datadef.io/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: datadef
Remote MCP URL: https://datadef.io/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "datadef": {
      "url": "https://datadef.io/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "datadef": {
      "type": "http",
      "url": "https://datadef.io/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "datadef",
  "transport": "streamable-http",
  "url": "https://datadef.io/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

get_design_guide — Datadef's standard for what makes a diagram readable, size, edge discipline, nested zones, annotations, and the tool order for building or editing.
canvas_describe_canvas — Get an overview of the current canvas: every node with its id, type, label and group, plus all connections and groups.
canvas_inspect_nodes — Get full detail for specific nodes: all columns with types and keys, metadata, schedule, formula, owners.
canvas_measure_canvas — Get exact geometry: every node's position and size in canvas units, the overall canvas bounds, and any nodes that overlap each other.
canvas_suggest_simplifications — Report where this canvas could be collapsed — groups of similar nodes that could become one summary node — without changing anything.
canvas_search_icons — Search Datadef's icon library (2000+ cloud and data-tool logos) for a valid icon id.
canvas_add_nodes — Add one or more nodes to the canvas.
canvas_add_standalone_node — Add a single data node at an exact position, without connecting it to anything.