n8n-MCP

MIT License

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validate_workflow

Validate workflow structure, node configurations, connections, and n8n expressions to identify errors, warnings, and fixes before deployment. Supports customizable validation profiles for precise checks.

Instructions

Full workflow validation: structure, connections, expressions, AI tools. Returns errors/warnings/fixes. Essential before deploy.

Input Schema

Name	Required	Description	Default
`options`	No	Optional validation settings
`workflow`	Yes	The complete workflow JSON to validate. Must include nodes array and connections object.

Input Schema (JSON Schema)

{
  "properties": {
    "options": {
      "description": "Optional validation settings",
      "properties": {
        "profile": {
          "default": "runtime",
          "description": "Validation profile for node validation. Default \"runtime\".",
          "enum": [
            "minimal",
            "runtime",
            "ai-friendly",
            "strict"
          ],
          "type": "string"
        },
        "validateConnections": {
          "default": true,
          "description": "Validate node connections and flow. Default true.",
          "type": "boolean"
        },
        "validateExpressions": {
          "default": true,
          "description": "Validate n8n expressions syntax and references. Default true.",
          "type": "boolean"
        },
        "validateNodes": {
          "default": true,
          "description": "Validate individual node configurations. Default true.",
          "type": "boolean"
        }
      },
      "type": "object"
    },
    "workflow": {
      "description": "The complete workflow JSON to validate. Must include nodes array and connections object.",
      "type": "object"
    }
  },
  "required": [
    "workflow"
  ],
  "type": "object"
}

Install Server

HTTP connection URL

Related Tools

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@czlonkowski/n8n-mcp
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create-workflow
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