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What are variables?

Variables are placeholders that let you pass data dynamically between nodes. Instead of hardcoding values, you reference outputs from other nodes. 
Static:  url = "https://example.com"
Dynamic: url = {{url}}
With variables, your workflows become flexible and reusable.

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Variable syntax

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Basic syntax

Variables use double curly braces: 
{{var}}
PartDescription
{{ }}Variable delimiters
NodeNameThe name of the variable

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Accessing node outputs

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Simple outputs

For nodes with a single output: 
{{var}}

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Structured outputs

For nodes that return objects, use dot notation: 
// Web Scraper output
{
  "content": "Page text...",
  "title": "Page Title",
  "metadata": {
    "url": "https://example.com",
    "wordCount": 1500
  }
}

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Array outputs

For arrays, use index notation: 
// Google Sheets output
{
  "rows": [
    {"name": "Alice", "email": "[email protected]"},
    {"name": "Bob", "email": "[email protected]"}
  ]
}
Access array items: 
{{$.rows[0].name}}  → "Alice"
{{$.rows[1].email}} → "[email protected]"
Array indices start at 0. The first item is [0], not [1].

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Using variables in nodes

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In text fields

Embed variables directly in text: 
Summarize this article about {{topic}}:

{{WebScraper_0}}

Focus on: {{keywords}}

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In URL fields

Build dynamic URLs: 
https://api.example.com/search?q={{query}}&page={{page_number}}

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In JSON fields

Use variables in JSON configuration: 
{
  "title": "{{article_title}}",
  "content": "{{LLM_0}}",
  "author": "{{author_name}}"
}

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Special variables with BrandKit

BrandKit provides global variables that maintain brand consistency across all your workflows. These variables are pre-filled with your brand information and can be used anywhere in your nodes.

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Activate BrandKit

To use BrandKit variables, first enable it in your workflow settings:
  1. Open Workflow Settings (gear icon)
  2. Scroll to the Brand Kit section
  3. Toggle Activate the brand kit for the workflow
  4. Select your Default Brand Kit
Workflow Settings - Brand Kit activation toggle

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Available variables

Once BrandKit is activated, you can access these variables in any text field by typing {{ : Variable picker showing Brand and System variables

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Brand Variables

VariableDescription
{{about}}Company description and mission
{{authorPersona}}Default author profile for content
{{competitors}}List of competitor brands
{{glossary}}Brand-specific terminology
{{idealCustomerProfile}}Target audience description
{{legal}}Legal disclaimers and terms
{{logo}}Brand logo URL
{{name}}Brand/company name
{{pointOfView}}Brand perspective (first person, etc.)
{{toneOfVoice}}Writing style guidelines
{{url}}Main website URL
{{writingRules}}Content writing guidelines

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System Variables

VariableDescription
{{dateNow}}Current date and time
{{runId}}Unique identifier for this execution
{{workflowId}}Unique identifier for the workflow
{{workflowName}}Name of the current workflow
Use BrandKit variables in LLM prompts to ensure all AI-generated content follows your brand guidelines automatically.

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Document complex variables

Add comments in your workflow description explaining complex variable usage.

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Debugging variables

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Preview values

  1. Run your workflow
  2. Click on a node
  3. See the actual values in the output panel

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Common issues

ProblemSolution
undefinedThe path doesn’t exist. Check spelling.
Empty valuePrevious node didn’t return data.
Type errorExpected string but got object. Use .toString()

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Variable inspector

Use the variable inspector to:
  1. Browse available variables
  2. See current values
  3. Copy variable paths

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Next steps

Execution

Run and debug your workflows

Control Flow

Use conditions and loops