N8n

/n8n

Connect to the n8n REST API to manage workflows, executions and credentials. Works with self-hosted n8n instances and n8n Cloud. Pure Ruby, zero gems — stdlib only.

Structure

scripts/
├── auth.rb          # API key auth via X-N8N-API-KEY header + n8n_request helper (required by all scripts)
├── check_setup.rb   # Check if API key and host are configured (outputs OK or SETUP_NEEDED)
├── save_token.rb    # Save and validate API key + host URL
├── workflows.rb     # List all workflows
├── workflow.rb      # Get workflow details
├── activate.rb      # Activate a workflow
├── deactivate.rb    # Deactivate a workflow
├── executions.rb    # List executions (with optional filters)
├── execution.rb     # Get execution details
└── credentials.rb   # List credentials (no secrets shown)

Setup (check before using)

ruby ~/.claude/skills/n8n/scripts/check_setup.rb

If the output is OK, proceed to the Flow section.

If the output is SETUP_NEEDED, guide the user step by step. Present ONE step at a time, wait for the user to confirm before moving to the next.

Step 1 — Ask the user for their n8n host URL:

What is the URL of your n8n instance?

• Self-hosted: typically http://localhost:5678
• n8n Cloud: https://your-instance.app.n8n.cloud

Paste the base URL here (no trailing slash).

Step 2 — Ask the user to create an API key:

You need an n8n API key. Go to your n8n instance:

1. Open Settings → API (or navigate to <your-host>/settings/api)
2. Click Create an API key
3. Copy the key and paste it here

If you don't see the API section, make sure the REST API is enabled in your n8n environment variables (N8N_PUBLIC_API_ENABLED=true).

Step 3 — When the user provides both values, save them:

ruby ~/.claude/skills/n8n/scripts/save_token.rb 'API_KEY' 'HOST_URL'

If the script outputs an error, the API key or host is invalid. Ask the user to double-check and try again.

If setup is not complete, DO NOT proceed to the Flow. Complete all steps first.

Flow

The argument $ARGUMENTS may contain a workflow ID.

Step 1: List workflows

ruby ~/.claude/skills/n8n/scripts/workflows.rb

Present the workflows to the user. If $ARGUMENTS matches a workflow ID, use that workflow. Otherwise ask which workflow to work with.

Step 2: Show workflow details

ruby ~/.claude/skills/n8n/scripts/workflow.rb WORKFLOW_ID

Present the workflow info (name, active status, nodes, connections) and ask what the user wants to do.

Step 3: Actions

Activate a workflow (requires user confirmation):

Show the workflow name and current status first, then ask: "Do you want to activate this workflow?" Only execute after a "yes".

ruby ~/.claude/skills/n8n/scripts/activate.rb WORKFLOW_ID

Deactivate a workflow (requires user confirmation):

Show the workflow name and current status first, then ask: "Do you want to deactivate this workflow?" Only execute after a "yes".

ruby ~/.claude/skills/n8n/scripts/deactivate.rb WORKFLOW_ID

List executions:

ruby ~/.claude/skills/n8n/scripts/executions.rb
ruby ~/.claude/skills/n8n/scripts/executions.rb --workflowId WORKFLOW_ID
ruby ~/.claude/skills/n8n/scripts/executions.rb --status error
ruby ~/.claude/skills/n8n/scripts/executions.rb --workflowId WORKFLOW_ID --status success

Get execution details:

ruby ~/.claude/skills/n8n/scripts/execution.rb EXECUTION_ID

List credentials (no secrets shown):

ruby ~/.claude/skills/n8n/scripts/credentials.rb

Notes

• Pure Ruby, zero gems — stdlib only (json, net/http, uri, fileutils)
• Auth via X-N8N-API-KEY header
• Config files: ~/.config/n8n/api_key and ~/.config/n8n/host (outside the repo, never commit)
• n8n can be self-hosted — the host URL is fully configurable (default: http://localhost:5678)
• Activating and deactivating workflows require explicit user confirmation
• The credentials endpoint only lists credential names and types — secrets are never exposed