n8n-expression-syntax

Fix n8n expression syntax errors by enforcing correct double brace {{}} usage, proper node name quoting, and safe access patterns for $json, $node, $now, and $env variables. This validation prevents common workflow failures caused by miswritten dynamic expressions.

n8n workflows fail when referencing webhook data due to incorrect path references or missing braces. Applying safe access patterns for $json and proper double brace {{}} syntax ensures dynamic webhook payloads are parsed correctly without workflow failures.

Correctly reference $json and $node variables in n8n expressions by wrapping dynamic code in double braces {{}} and applying safe access patterns. This ensures your workflow retrieves the intended JSON data without execution failures.

Common pitfalls when writing n8n expressions with JavaScript include misusing double braces, failing to quote node names correctly, and unsafe access to $json, $env, or $now variables. Validating syntax helps identify and correct these referencing mistakes quickly.

You can validate n8n dynamic expressions before running the workflow by checking brace usage and node references against established guidelines. This process identifies syntax and referencing mistakes early, ensuring your workflows run reliably without execution errors.