N8n Builder
Generate complete n8n workflow JSON files
- Type
- Slash Command
- Repository
- jeremylongshore/tons-of-skills-marketplace
- GitHub stars
- 2.8k
- License
- MIT
- Repo last updated
- Sep 27, 2026
What N8n Builder is
N8n Builder is a slash command published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”
A slash command is a reusable prompt saved as a markdown file and run by typing its name after a slash. In Claude Code, custom commands have been merged into skills: a file in .claude/commands/ and a skill folder in .claude/skills/ both create the same kind of command, and existing command files keep working.
N8n Builder gives you a repeatable way to run the same instructions without retyping them, optionally with arguments.
How to install N8n Builder
Claude Code
- Download n8n-builder.md from the repository.
- Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md.
- Run it by typing / followed by its name.
Claude Cowork
- Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
- In Customize → Skills, click +, then upload the ZIP.
- Run it from any task with / and the skill name.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/ai-agency/n8n-workflow-designer/commands/n8n-builder.md, shared under the repository's MIT license. Read the full file on GitHub.
Generate production-ready n8n workflow JSON files.
Usage
When the user requests an n8n workflow, analyze their requirements and create a complete, importable workflow JSON file.
Workflow Templates
1. AI Email Responder
{
"name": "AI Email Auto-Responder",
"nodes": [
{
"parameters": {
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
},
"simple": true,
"filters": {
"labelIds": ["INBOX"]
}
},
"id": "1",
…2. Data Processing Pipeline
{
"name": "CSV to Database with AI Enhancement",
"nodes": [
{
"parameters": {
"fileFormat": "csv",
"options": {}
},
"id": "1",
"name": "Read CSV",
"type": "n8n-nodes-base.spreadsheetFile",
"typeVersion": 2,
"position": [250, 300]
},
{
"parameters": {
"batchSize": 10,
"options": {}
…3. Content Pipeline
{
"name": "RSS to Social Media with AI",
"nodes": [
{
"parameters": {
"url": "https://example.com/feed.xml",
"options": {}
},
"id": "1",
"name": "RSS Feed",
"type": "n8n-nodes-base.rssFeedRead",
"typeVersion": 1,
"position": [250, 300]
},
{
"parameters": {
"conditions": {
"dateTime": [
…4. Lead Qualification
{
"name": "Lead Scoring and Routing",
"nodes": [
{
"parameters": {
"path": "lead-webhook",
"options": {}
},
"id": "1",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"typeVersion": 2,
"position": [250, 300]
},
{
"parameters": {
"model": "gpt-4",
"messages": {
…Features
- Complex branching logic
- Loops and iterations
- Error handling and retries
- Custom code nodes
- 200+ integrations
- Self-hostable
- AI model integration
- Database operations
- API calls and webhooks
Best Practices
- Always add error handling - Use error workflows or try-catch nodes
- Test with small datasets first - Validate before processing large volumes
- Use environment variables for secrets - Never hardcode API keys
- Implement logging for debugging - Add notes or database logging
- Version control your workflows - Export and commit to git
- Monitor resource usage - Watch execution times and API costs
- Use descriptive node names - Make workflows self-documenting
- Implement rate limiting - Respect API limits with Wait nodes
- Batch processing for scale - Use Split in Batches for large datasets
- Regular backups - Export workflows regularly
Output Format
When generating a workflow, provide:
- Workflow Name - Clear, descriptive name
- Architecture Diagram - Visual flow of nodes
- Complete JSON - Importable workflow file
- Setup Instructions - Credentials, settings needed
- Testing Steps - How to validate the workflow
- Deployment Notes - Self-hosted vs cloud considerations
- Cost Estimation - Expected API and resource costs
Example Response
# Workflow: AI Customer Support Automation
## ArchitectureTicket Created → Classify (AI) → Route by Priority → Draft Response (AI) → Human Review → Send
## Nodes
1. Webhook trigger for new tickets
2. OpenAI classification
3. IF node for routing
4. OpenAI response generation
5. Slack notification for review
6. Email send on approval
## Setup
1. Create webhook in your ticketing system
2. Add OpenAI API credentials
3. Configure Slack webhook
4. Set up email credentials
5. Test with sample ticket
## JSON
[Complete importable JSON here]
…This workflow builder helps users create production-ready n8n automations with AI integration, error handling, and best practices built in.
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is N8n Builder?
N8n Builder is a slash command for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Generate complete n8n workflow JSON files
How do I install N8n Builder in Claude Code?
Download n8n-builder.md from the repository. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md. Run it by typing / followed by its name.
Can I use N8n Builder in Claude Cowork?
Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it. In Customize → Skills, click +, then upload the ZIP. Run it from any task with / and the skill name.
Is N8n Builder safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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