n8n-code-javascript SKILL.md skillA
n8n-code-javascript from hybridlabor-api/bdb-dev-optimized-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hybridlabor-api/bdb-dev-optimized-agent-skills/n8n-code-javascript@git:20260827.e9312a3Pins git:20260827.e9312a3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hybridlabor-api/bdb-dev-optimized-agent-skills
- Path
skills/global_config/n8n-code-javascript/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260827.e9312a3, committed Aug 27, 2026
- First version recorded
- Jul 27, 2026
- Size
- 16,270 bytes
- Repository stars
- 7
- License
- Apache-2.0
Write JavaScript code in n8n Code nodes. Use when writing JavaScript in n8n, using $input/$json/$node syntax, making HTTP requests with $helpers, working with dates using DateTime, troubleshooting Code node errors, or choosing between Code node modes.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# JavaScript Code Node
Expert guidance for writing JavaScript code in n8n Code nodes.
---
## Quick Start
```javascript
// Basic template for Code nodes
const items = $input.all();
// Process data
const processed = items.map(item => ({
json: {
...item.json,
processed: true,
timestamp: new Date().toISOString()
}
}));
return processed;
```
### Essential Rules
1. **Choose "Run Once for All Items" mode** (recommended for most use cases)
2. **Access data**: `$input.all()`, `$input.first()`, or `$input.item`
3. **CRITICAL**: Must return `[{json: {...}}]` format
4. **CRITICAL**: Webhook data is under `$json.body` (not `$json` directly)
5. **Built-ins available**: $helpers.httpRequest(), DateTime (Luxon), $jmespath()
---
## Mode Selection Guide
The Code node offers two execution modes. Choose based on your use case:
### Run Once for All Items (Recommended - Default)
**Use this mode for:** 95% of use cases
- **How it works**: Code executes **once** regardless of input count
- **Data access**: `$input.all()` or `items` array
- **Best for**: Aggregation, filtering, batch processing, transformations, API calls with all data
…Read the whole file at its exact version.
How to install
mdr add hybridlabor-api/bdb-dev-optimized-agent-skills/n8n-code-javascript@sha256:6c84d7d608863b02The line at the top of this page pins the label git:20260827.e9312a3, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_esyvgxoldqmmralq)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 27, 2026 and Aug 27, 2026, about one every 31 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260827.e9312a3 latest | 2026-08-27 | e9312a3 | 16,270 B | A | view · diff |
| git:20260727.48beb34 | 2026-07-27 | 48beb34 | 16,252 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (16270 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hybridlabor-api/bdb-dev-optimized-agent-skills · 7 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_esyvgxoldqmmralq GET https://markdownregistry.com/api/v1/resolve?ref=hybridlabor-api/bdb-dev-optimized-agent-skills/n8n-code-javascript GET https://markdownregistry.com/api/v1/blob/6c84d7d608863b0245e5e0158817cde4600908fa69d3e810bb006d916f21de3a
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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