n8n-expression-syntax

Webhook data in n8n expressions is accessed via the .body property using the $json variable, such as {{$json.body.name}}. This pattern safely retrieves incoming webhook payloads within your automation workflows.

n8n expression syntax errors often occur from missing curly braces or incorrect node name casing. You must use exact casing and bracket notation for spaces, like {{$node["HTTP Request"].json.data}}, to properly resolve the reference.

Fix missing curly braces in n8n workflow expressions by ensuring all dynamic variables are wrapped in the {{}} pattern. Validating the structure enforces proper syntax for $json, $node, and webhook data processing.

You can use $now and $json variables together in n8n expressions to compute derived values. Validating these expressions ensures proper curly braces and syntax for routing results in your automation workflows.

The correct syntax for spaces in n8n node names requires bracket notation. You must enclose the exact node name with precise casing in quotes, like {{$node["HTTP Request"].json}}, to avoid syntax errors.

n8n expression syntax supports debugging by providing a library of common errors, quick fixes, and practical workflow examples. This helps validate $node and webhook data references to resolve automation failures.