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Overview

Placeholders pass data between blocks in your workflow. They connect user inputs, step outputs, and brand information throughout the execution sequence. Three types of placeholders:
  1. Input Placeholders: Values defined by the user in the Input block
  2. Step Output Placeholders: Data returned by previous workflow steps

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Input Placeholders

Input placeholders are defined in your workflow’s Input Block. Syntax: 
{{input.<input_name>}}

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Example

If your Input Block defines a placeholder called keyword, reference it in any later step: 
{{input.keyword}}
You can define multiple custom inputs (topic, url, audience). They automatically appear in the placeholder selector inside each block.

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Step Output Placeholders

Each step generates an output you can reference in later steps. Syntax: 
{{step_<n>.output}}
Where <n> is the step number (step_1, step_2, etc.).

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Example

If Step 1 is a Google Search block and Step 2 is an LLM block, reference Step 1’s results in your Step 2 prompt: 
Here's the Google search result of the search term {{input.keyword}}. 
{{step_1.output}}
Now write a summary of the top pages for {{input.keyword}}.

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Accessing Structured Data

If a step returns structured data (JSON), access specific properties: 
{{step_2.output.title}}
{{step_3.output.keywords[0]}}

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Best Practices

  • Use the Placeholder Selector ({ } icon on the top left) to insert placeholders without typing manually
  • Check the Test Panel to preview step outputs before referencing them
  • For JSON outputs, expand the result in the Test Panel to confirm the correct structure (keys, arrays)
  • Placeholders can only reference previous steps, not future ones

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Common Use Cases

GoalExample
Pass user input into an AI promptGenerate a blog outline for {{input.keyword}}.
Include brand tone or personaWrite this in {{input.brandkit.writingSample.outLine}} style.
Reuse output from a previous stepSummarize {{step_1.output}} into three key points.
Extract specific data from an API responseAnalyze {{step_3.output.results[0].url}}.
Combine results for formatted outputThe final headline is {{step_2.output.headline}}.

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What’s Next

Now that you understand placeholder referencing: