Nodes for reading, writing, and manipulating pattern variables, secrets, and environment values.

Variable nodes let you store, retrieve, and modify data during pattern execution. Variables persist for the lifetime of a single execution run. For values that persist across runs, use workspace secrets.

This category contains a mix of pure nodes (Get Variable, Get Environment, Get Secret) and impure nodes (Set Variable, Increment Variable, Append to Array, Append to String).

Get Variable

Read a variable by name. Returns the current value stored under that name.

Pin	Direction	Type	Description
Name	Input	String	The variable name to read
Value	Output	Any	The stored value

Pure. Use Get Variable to access data set earlier in the execution flow — counters, intermediate results, or accumulated lists.

Set Variable

Write a value to a named variable.

Pin	Direction	Type	Description
Exec	Input	Exec	Triggers the write
Name	Input	String	The variable name to write
Value	Input	Any	The value to store
Exec	Output	Exec	Continues after the write

Impure. Use Set Variable to save intermediate results, counters, or state that other nodes need later.

Increment Variable

Add a numeric amount to an existing variable.

Pin	Direction	Type	Description
Exec	Input	Exec	Triggers the increment
Name	Input	String	The variable name to increment
Amount	Input	Float	Value to add (default: 1)
Exec	Output	Exec	Continues after the increment
New Value	Output	Float	The variable's value after incrementing

Impure. Use Increment Variable for counters — tracking processed items, failed attempts, or API call counts.

Append to Array

Push an item onto the end of an array variable.

Pin	Direction	Type	Description
Exec	Input	Exec	Triggers the append
Name	Input	String	The array variable name
Item	Input	Any	The item to append
Exec	Output	Exec	Continues after the append

Impure. Use Append to Array to build up a list during a loop — collecting results, errors, or matched items.

Append to String

Concatenate text onto the end of a string variable.

Pin	Direction	Type	Description
Exec	Input	Exec	Triggers the append
Name	Input	String	The string variable name
Text	Input	String	The text to concatenate
Exec	Output	Exec	Continues after the append

Impure. Use Append to String to build up log messages, report content, or formatted output incrementally.

Get Environment

Read an environment variable by name.

Pin	Direction	Type	Description
Name	Input	String	The environment variable name
Value	Output	String	The environment variable value

Pure. Use Get Environment to read deployment-specific configuration like API base URLs or feature flags.

Get Secret

Retrieve a workspace secret by name. Secrets are scoped to the current environment and can be either plain text strings or key-value maps.

Pin	Direction	Type	Description
Secret Name	Input	String	The secret path to retrieve
Value	Output	Any	The secret value (string or object)

Pure. Use Get Secret to access API keys, tokens, and credentials stored in the workspace secrets manager.

Literals — provide constant values as inputs
Flow Control — use variables with Branch, For Each, and other control nodes
String — manipulate string variable values

Variables

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