Set Variable Node

The Set Variable node allows you to define or update variables at runtime. Variables defined this way are available to all subsequent nodes in the flow.

Overview

Configuration

Usage

Define a simple variable

Key: token
Value: {{ steps.login.outputs.json.token }}

Define a variable with a calculation

Key: totalPrice
Value: {{ steps.cart.outputs.json.subtotal * 1.1 }}

Access the variable in subsequent nodes

After defining it, the variable is accessible via:

{{ variables.token }}
{{ variables.totalPrice }}

Examples

Save an authentication token

[HTTP Request: POST /login] → [Set Variable: token = {{ steps.login.outputs.json.token }}]
    │
    ▼
[HTTP Request: GET /profile → Header: Authorization = Bearer {{ variables.token }}]

Prepare a dynamic URL

[Set Variable: baseUrl = https://{{ variables.ENVIRONMENT }}.exemplo.com]
    │
    ▼
[HTTP Request: GET {{ variables.baseUrl }}/api/users]

Tips

• Use descriptive names for variables: authToken is better than t
• Variables defined with Set Variable overwrite global variables with the same name during execution
• The value supports any expression {{ }}, including calculations and access to outputs