Transform Node

The transform node evaluates a Jexl expression to compute a new value from the current workflow state. The result becomes lastOutput for the next node.

Configuration Fields

Field	Type	Description
`transformScript`	string	Jexl expression to evaluate (primary field)
`transformation`	string	Alias for `transformScript` (legacy)

If neither is set, the expression defaults to lastOutput (passthrough).

Expression Context

Variable	Value
`input`	`variables.lastOutput` — output of the previous node
`lastOutput`	`variables.lastOutput` — same as `input`
`variables`	Full workflow variables dictionary

Expression Examples

input.items.length
lastOutput.score * 100
variables.count + 1
input.name + " - processed"

The transform node uses Jexl, not JavaScript. It does not support return, arrow functions, map(), filter(), assignments, or other JS-specific syntax. For full code execution, use the Agent node with the run_javascript tool enabled (requires human approval), or the Code node once Pod VM infrastructure is available.

Output

The result of the expression is set as lastOutput and passed to downstream nodes.

Example Config — Extract a field

{
  "transformScript": "input.data.title"
}

Input: { "data": { "title": "Hello World", "body": "..." } } Output: "Hello World"

Example Config — Arithmetic

{
  "transformScript": "lastOutput.count * 2 + 1"
}

Transform Node

Transform Node

Configuration Fields

Expression Context

Expression Examples

Output

Example Config — Extract a field

Example Config — Arithmetic

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