n8n-MCP is a Model Context Protocol server that gives AI assistants structured knowledge of n8n's workflow-automation nodes, including their properties, operations, documentation, and examples. It helps developers use AI assistants to create and work with n8n workflows. The catalogue contains skills, agents, and instructions for using it.
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 czlonkowski/n8n-mcp --skill using-n8n-mcp-skillsgit clone --depth 1 https://github.com/czlonkowski/n8n-mcpWrote 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/czlonkowski/n8n-mcp/using-n8n-mcp-skills)<a href="https://agentmods.dev/skills/czlonkowski/n8n-mcp/using-n8n-mcp-skills"><img src="https://agentmods.dev/badge/skills/czlonkowski/n8n-mcp/using-n8n-mcp-skills/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/czlonkowski/n8n-mcp/using-n8n-mcp-skills"><img src="https://agentmods.dev/badge/skills/czlonkowski/n8n-mcp/using-n8n-mcp-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 116 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium MCP Rug Pull · line 119 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00164 | $0.04327 |
| Opus 5 | $0.00082 | $0.02164 |
| Sonnet 5 | $0.00033 | $0.00865 |
| Haiku 4.5 | $0.00016 | $0.00433 |
Grade A, and why
using-n8n-mcp-skills 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 13d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- using-n8n-mcp-skills — 100% identical, 0 lines differ
- using-n8n-mcp-skills — 88% identical, 35 lines differ
How it starts
The opening of the file, as written. The whole thing — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Using the n8n-mcp Skills
This is a router, not a reference. It tells you which skill owns the rules for what you're about to do. The skill bodies hold the actual guidance — invoke them with the Skill tool. When in doubt, load more skills rather than fewer.
The community n8n-mcp server and n8n itself move faster than any model's training
cutoff. Tool names, parameters, node typeVersions, and default behaviors drift between
releases. When you spot drift — a tool a skill names doesn't exist, a parameter shape
doesn't match what get_node returns, behavior differs from what a skill describes —
trust the live tool, tell the user, and suggest updating the pack and the instance.
Non-negotiables
Three rules with no exceptions. Each one prevents a class of workflow that looks correct but breaks in production.
- Invoke the relevant skill before any n8n action — not just before MCP calls. Before writing an expression, configuring a node, designing a workflow, wiring a connection, or writing Code, invoke the matching skill. PreToolUse hooks remind you on the highest-impact tool calls, but they exist only in the Claude Code plugin install. Everywhere else — Claude.ai skill uploads, and any client that loads this pack as an Agent Plugin (Codex, Cursor, Copilot and the rest) — nothing nudges you and the responsibility is entirely yours. Assume you are un-hooked unless you have seen a hook fire this session.
- Validate AND verify before activating. Run
validate_workflow(orn8n_validate_workflowby id) before you activate, and calln8n_get_workflowafter every create or update to inspect theconnectionsobject. Validation alone misses silently dropped wires, Merge index off-by-one, and error outputs that were never wired. Validation passing means the JSON is well-formed — not that the workflow is correct. - Secrets never go in text fields. Tokens, API keys, and passwords always go through
the n8n credential system. If no native node exists, use the HTTP Request node with
the official credential type. A Set node holding a token referenced via
{{ $json.token }}is a leak with extra steps. Seen8n-mcp-tools-expert.
What ships with it
1 file 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.
- 13d ago First seen · 187 lines · 164 tokens per session scan A de4ad06ed79d
using-n8n-mcp-skills is a skill published in the GitHub repository czlonkowski/n8n-mcp (22,874 stars, last pushed yesterday), licensed MIT. It adds 164 tokens to every session and 4,327 once invoked, about $0.0008 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 2026-08-30.
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