Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Mcp Metadata Demo

Most MCP servers expose data.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

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

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV OBFUSCATION_ENCODED_BLOB PERMISSION_SHELL_DECLARED SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    .codex/skills/mcp-compat-check/check.mjs, line 37 const r = await fetch(url, { method: 'POST', headers: h, body: JSON.stringify(body) });

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    src/functions.ts, line 10 * path as local `.env`.

  • OBFUSCATION_ENCODED_BLOB Low

    Contains a long base64 shaped string in a file that should be readable.

    package-lock.json, line 1 {

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    .codex/skills/rich-domain-mcp-server/references/harness/field_probe.py, line 104 r = subprocess.run(['claude', '-p', prompt, '--model', a.model, '--output-format', 'json', '--tools', '',

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/http.test.ts, line 10 process.env.EP_ONLINE_API_KEY ??= 'test-key'; // initialize never calls EP-Online

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

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    .codex/skills/rich-domain-mcp-server/references/harness/field_probe.py, line 104

    r = subprocess.run(['claude', '-p', prompt, '--model', a.model, '--output-format', 'json', '--tools', '',

    evals/q18/q18.py, line 134

    p = subprocess.run(['claude', '-p', '--model', c['model'], '--tools', '', '--setting-sources', '',

    .claude/skills/rich-domain-mcp-server/references/harness/field_probe.py, line 104

    r = subprocess.run(['claude', '-p', prompt, '--model', a.model, '--output-format', 'json', '--tools', '',

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    .codex/skills/mcp-compat-check/check.mjs, line 37

    const r = await fetch(url, { method: 'POST', headers: h, body: JSON.stringify(body) });

    .codex/skills/rich-domain-mcp-server/references/scaffolding.md, line 45

    const res = await fetch(`${CONFIG.baseUrl}${path}`, {

    src/http.test.ts, line 21

    const res = await fetch(base + path, { method, headers: { accept: 'text/event-stream' } });

    Show more

    src/http.test.ts, line 28

    const res = await fetch(`${base}/mcp`, {

    src/clients/bag-client.ts, line 165

    const response = await fetch(url, {

    src/clients/bag-client.ts, line 198

    const response = await fetch(url, {

    src/clients/bag-client.ts, line 234

    const response = await fetch(url, {

    src/clients/ep-online-client.ts, line 90

    const response = await fetch(url, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/functions.ts, line 10

    * path as local `.env`.

    src/http.test.ts, line 10

    process.env.EP_ONLINE_API_KEY ??= 'test-key'; // initialize never calls EP-Online

    src/clients/clients.test.ts, line 105

    process.env.EP_ONLINE_API_KEY = '

    Show more

    src/clients/clients.test.ts, line 109

    delete process.env.EP_ONLINE_API_KEY;

    src/clients/ep-online-client.ts, line 60

    /** API key. If omitted, reads process.env.EP_ONLINE_API_KEY. */

    src/clients/ep-online-client.ts, line 71

    this.apiKey = options.apiKey ?? process.env.EP_ONLINE_API_KEY ?? '';

    src/clients/ep-online-client.ts, line 77

    'Then set EP_ONLINE_API_KEY in your environment (or .env file), or ' +

    ui/apps/chart/chart.component.ts, line 1094

    const isDev = Boolean((import.meta as any).env?.DEV);

    .codex/config.toml, line 49

    "--env-file=.env.local",

    .firebaseignore, line 14

    .github/**

    .firebaseignore, line 15

    .env

    .gitignore, line 3

    build/

    .gitignore, line 4

    .env

  • Agent instructions

    Pass

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

  • Obfuscation

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    package-lock.json, line 1

    {

    evals/open-questions.md, line 1

    # Open questions

    evals/results/2026-09-23-q10-addressed-semantics.json, line 1

    {

    Show more

    evals/results/2026-09-23-q17-rules-at-scale.json, line 1

    {

    evals/results/2026-09-23-q18-authoring-form.json, line 1

    {

    evals/results/2026-09-24-q19-best-arm.json, line 1

    {

    evals/results/2026-09-24-q22-app-tools.json, line 1

    {

    evals/results/2026-09-24-q23-chart-choice.json, line 1

    {

    evals/results/2026-09-28-compat-public-servers.json, line 156

    "src": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABmJLR0QA/wD/AP+gvaeTAAADK0lEQVRIibWVQWhcVRSGv3Pfy0zGdBIMRWk7iziMTpORptpqiNSNG1dNizaFFlxIoYuCC7NwJdiVlh

    evals/results/2026-09-28-compat-public-servers.json, line 161

    "src": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABmJLR0QA/wD/AP+gvaeTAAAB8ElEQVRIibWVu09UQRSHv9k1IgW7AY0RBWKsTGx9ND4qS5F/wEYLDb0xAY0UxkdrZ2NHYWfsaYyVT4

    evals/results/2026-09-28-compat-public-servers.json, line 195

    "src": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABmJLR0QA/wD/AP+gvaeTAAADK0lEQVRIibWVQWhcVRSGv3Pfy0zGdBIMRWk7iziMTpORptpqiNSNG1dNizaFFlxIoYuCC7NwJdiVlh

    evals/results/2026-09-28-compat-public-servers.json, line 200

    "src": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAYAAADgdz34AAAABmJLR0QA/wD/AP+gvaeTAAAB8ElEQVRIibWVu09UQRSHv9k1IgW7AY0RBWKsTGx9ND4qS5F/wEYLDb0xAY0UxkdrZ2NHYWfsaYyVT4

    evals/results/2026-09-28-compat-public-servers.json, line 270

    "src": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGAAAABgCAYAAADimHc4AAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAACvdJREFUeJztXQuQVMUVHT5GCYmSDwaVMhQWmpSRRIEkJqmdFVQCRuRjCi

    evals/results/2026-09-28-compat-public-servers.json, line 566

    "src": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMAAAADACAYAAABS3GwHAAAGkElEQVR4nOzdi23bWBCF4cnCRaSB1JGbbrYL212kmzB1bAMpY0WEBBTFkviY+5g5/wcYASIFjq175lySerwYIOzFAGEEANIIAKQRAE

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 49a4f070cd81. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads a credential or environment file. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 49a4f070cd81192b27cf986957253471e0b28e3f

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