Grades are a hygiene check, not a security guarantee.

MCP, MCP server

N8N Workflow Builder

AI assistant integration for n8n workflow automation through Model Context Protocol (MCP).

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 411c0a75f512, unchanged since the check below.

INSTALL_LIFECYCLE_HOOK

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    TROUBLESHOOTING.md, line 167 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Concern

    runs a script at install time. The docs document an installer that pipes a download into a shell.

    INSTALL_LIFECYCLE_HOOK INSTALL_DOCUMENTED_INSTALLER

    TROUBLESHOOTING.md, line 167

    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash

    package.json, line 21

    prepare

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    src/index.cjs, line 87

    const response = await axios.post(`${this.n8nHost}/api/v1/workflows`, workflowData, {

    src/index.cjs, line 104

    const response = await axios.put(`${this.n8nHost}/api/v1/workflows/${id}`, workflowData, {

    src/index.cjs, line 121

    const response = await axios.post(`${this.n8nHost}/api/v1/workflows/${id}/activate`, {}, {

    Show more

    src/index.cjs, line 138

    const response = await axios.post(`${this.n8nHost}/api/v1/workflows/${id}/deactivate`, {}, {

    src/index.cjs, line 155

    const response = await axios.get(`${this.n8nHost}/api/v1/workflows/${id}`, {

    src/index.cjs, line 172

    const response = await axios.delete(`${this.n8nHost}/api/v1/workflows/${id}`, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/index.cjs, line 65

    this.n8nApiKey = process.env.N8N_API_KEY || '';

    src/server.ts, line 12

    const N8N_API_KEY = process.env.N8N_API_KEY || '';

    src/config/constants.ts, line 2

    export const N8N_API_KEY = process.env.N8N_API_KEY || '';

    Show more

    .gitignore, line 7

    # Environment variables

    .gitignore, line 8

    .env

    .gitignore, line 9

    .env.test

    .gitignore, line 10

    .env.local

    .gitignore, line 11

    .env.development.local

    .gitignore, line 12

    .env.test.local

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 411c0a75f512. runs a script at install time. The docs document an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 411c0a75f512898572c3de80f86d5b5c3939f041

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen