Can I perform HTTP requests inside an n8n Code node?

Yes, you can use the built-in $helpers.httpRequest() method to perform asynchronous API calls directly within your JavaScript logic.

Which execution mode should I choose for the Code node?

'Run Once for All Items' is recommended for most cases as it allows for data aggregation and is more performant than per-item execution.

What is the mandatory return format for n8n Code nodes?

You must always return an array of objects where each object contains a 'json' property, for example: return [{json: { key: 'value' }}].

How do I access data from a Webhook node correctly?

Webhook data is nested under the body property. Use $json.body.fieldName or $input.first().json.body to access the payload.

Does the skill include support for date and time formatting?

Yes, it provides specific guidance and examples for using the integrated Luxon library (DateTime) for advanced date manipulation.

n8n JavaScript Code Node Expert

Name: n8n JavaScript Code Node Expert
Author: AeyeOps

byAeyeOps

0•

Productivity & Workflow

Simplifies complex n8n workflow logic by providing expert patterns for JavaScript Code nodes, data transformations, and API integrations.

This skill provides comprehensive guidance for developers using the n8n Code node, covering essential APIs, data access patterns, and execution modes. It helps users avoid common pitfalls like incorrect return formats or nested webhook structures while enabling advanced operations such as multi-source data aggregation, Luxon-based date manipulation, and custom HTTP requests. It is particularly useful for engineers building intricate automation workflows that require logic beyond standard n8n nodes, ensuring code is performant, valid, and easy to maintain.

Key Features

01Validation logic to ensure mandatory return structures ([{json: {}}]) are met.

02Snippets for built-in helpers including Luxon DateTime and $helpers.httpRequest.

03Detailed templates for accessing webhook data, node outputs, and input arrays.

04Optimized patterns for 'Run Once for All Items' and 'Run Once for Each Item' modes.

05Error prevention guides for common syntax confusion and null-pointer exceptions.

060 GitHub stars

Use Cases

01Performing complex date/time arithmetic and localized formatting for automated reporting.

02Aggregating and filtering large datasets from multiple API sources before final processing.

03Normalizing disparate data structures for seamless ingestion into CRMs or databases.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add aeyeops/aeo-skill-marketplace n8n-code-javascript

For use in Claude.ai and ChatGPT

Download Skill