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Variables

Variables are how data flows through your workflows.

How Variables Work​

Each node in a workflow can:

  • Read variables from previous nodes
  • Write new variables for subsequent nodes

Referencing Variables​

Use double curly braces to reference variables:

{{trigger.body.message}}
{{node_1.output.result}}
{{env.API_KEY}}

Variable Types​

Trigger Variables​

Data from the trigger that started the workflow:

{{trigger.body}}      // Request body (webhooks)
{{trigger.headers}}   // Request headers
{{trigger.params}}    // URL parameters

Node Output Variables​

Output from previous nodes:

{{node_name.output}}           // Full output
{{node_name.output.field}}     // Specific field
{{node_name.output[0]}}        // Array index

Environment Variables​

Secure variables set at the workflow level:

{{env.API_KEY}}
{{env.DATABASE_URL}}

JavaScript Expressions​

Use JavaScript for complex transformations:

{{trigger.body.items.map(item => item.name).join(", ")}}
{{new Date().toISOString()}}
{{Math.round(node_1.output.price * 1.1)}}
tip

Press Cmd/Ctrl + Space in any variable field to see available variables.