Claude Code n8n JavaScript Skill for Filtering Code Node Items

Choose an execution mode, read one item or the whole input batch, and package filtered data as n8n output items.

Install in Claude Code

Use Claude Code with the pinned skill and an n8n test workflow containing a Code node. Bring fictional inputs.

Get the complete `cli-tool/components/skills/workflow-automation/n8n/n8n-code-javascript` directory from the pinned GitHub checkout.
Copy it under the target project's `.claude/skills/`. Confirm `.claude/skills/n8n-code-javascript/SKILL.md`, open Claude Code at the project root, and call `/n8n-code-javascript`.

Example task

Supply three fictional registration items numbered 1, 2, and 3. Only 1 and 3 have confirmed set to true. Use all-items mode and return the matching IDs.

What to check

Expect two output items with `json` objects for IDs 1 and 3. If nothing matches, expect an empty array.

Original SKILL.md on GitHub · Updated 2026-11-13

Frequently asked question

Why does a plain string fail as a return value?

Workflow nodes exchange structured items. In all-items mode, return an array and place each record inside its item's `json` object.