Transformer

The Transformer node builds a computed output value from workflow variables and literal text. Use it to format strings, restructure data, combine fields, or prepare input for the next node.

Type: TRANSFORMER_V3 Color: Blue (#2563EB) Credits: None Test module: Yes

How it works

The Transformer uses the FX formula editor, a visual block-based expression builder. You construct the output by combining:

• Literal text: static strings you type directly
• Variable blocks: references to data from previous nodes ({{trigger.body.name}})

The blocks evaluate left-to-right and produce a single output value.

Configuration

Example: Format a notification message

Build a Slack message from form data:

New lead: {{trigger.body.name}} ({{trigger.body.email}}) from {{trigger.body.company}}
Score: {{analyzer.result.score}}

The Transformer concatenates the literal text with variable values and outputs the formatted string.

Example: Restructure JSON

Use the Transformer to extract and reorganize data from an API response:

{{http_request.body.data.user.firstName}} {{http_request.body.data.user.lastName}}

Output

The Transformer outputs a single computed value available as {{transformer.output}} (or whatever you name the node).

After running a test, the output schema populates automatically; downstream nodes can then reference specific fields in the variable picker.