Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Impertio-Studio/n8n-Claude-Skill-Package --skill n8n-syntax-trigger-nodesgit clone --depth 1 https://github.com/Impertio-Studio/n8n-Claude-Skill-PackageWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/impertio-studio/n8n-claude-skill-package/n8n-syntax-trigger-nodes)<a href="https://agentmods.dev/skills/impertio-studio/n8n-claude-skill-package/n8n-syntax-trigger-nodes"><img src="https://agentmods.dev/badge/skills/impertio-studio/n8n-claude-skill-package/n8n-syntax-trigger-nodes/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/impertio-studio/n8n-claude-skill-package/n8n-syntax-trigger-nodes"><img src="https://agentmods.dev/badge/skills/impertio-studio/n8n-claude-skill-package/n8n-syntax-trigger-nodes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00127 | $0.02846 |
| Opus 5 | $0.00063 | $0.01423 |
| Sonnet 5 | $0.00025 | $0.00569 |
| Haiku 4.5 | $0.00013 | $0.00285 |
Grade A, and why
n8n-syntax-trigger-nodes scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.
n8n Trigger Node Development
Build custom trigger nodes for n8n v1.x using event/timer, polling, or webhook patterns.
Quick Reference
| Pattern | Method | Interface | Description Key | Use When |
|---|---|---|---|---|
| Event/Timer | trigger() |
ITriggerFunctions |
group: ['trigger'] |
Listening to events, cron schedules, streams |
| Polling | poll() |
IPollFunctions |
polling: true |
Periodically checking an API for new data |
| Webhook | webhook() |
IWebhookFunctions |
webhooks: [...] |
External service sends HTTP requests to n8n |
Critical Rules
- ALWAYS set
inputs: []on trigger nodes — triggers have NO inputs - ALWAYS include
'trigger'in thegrouparray - ALWAYS double-wrap emitted data:
this.emit([[items]])— outer array = outputs, inner array = items - ALWAYS provide
manualTriggerFunctionfor event triggers so "Test Workflow" works in the editor - ALWAYS implement
closeFunctionwhen your trigger allocates resources (intervals, connections, listeners) - NEVER emit single-wrapped arrays —
this.emit([items])causes silent failures - NEVER forget cleanup — leaked intervals/connections persist across workflow deactivation
Decision Tree: Which Trigger Pattern?
Need a trigger node?
├── Does an EXTERNAL SERVICE call YOUR endpoint?
│ └── YES → Use WEBHOOK pattern (webhook() + IWebhookFunctions)
│ ├── Service has webhook registration API? → Add webhookMethods lifecycle
│ └── Service sends to a static URL? → Use webhooks[] description only
├── Do you need to CHECK an API periodically?
│ └── YES → Use POLLING pattern (poll() + IPollFunctions)
│ └── ALWAYS implement deduplication (track last seen ID/timestamp)
└── Do you LISTEN for events, run on schedule, or stream data?
└── YES → Use EVENT/TIMER pattern (trigger() + ITriggerFunctions)
└── ALWAYS implement closeFunction for cleanup
Pattern 1: Event/Timer Trigger
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 322 lines · 127 tokens per session scan A 452c894c3845
n8n-syntax-trigger-nodes is a skill published in the GitHub repository Impertio-Studio/n8n-Claude-Skill-Package (3 stars, last pushed 2mo ago), licensed MIT. It adds 127 tokens to every session and 2,846 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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