Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Grounders MCP

A remote MCP server that gives Claude access to several Google accounts at once — Gmail, Calendar, Drive, Contacts and Tasks.

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.

Rescanned at commit 30f91b15de3f.

NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    smtp-relay/worker.js, line 35 async fetch(req, env) {

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    smtp-relay/worker.js, line 35 async fetch(req, env) {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    README.md, line 49 cp .env.example .env # fill it in — see Setup below

  • SECRETS_ENV_READ Note

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

    src/routes/gmail_link.js, line 125 process.env.JWT_SECRET,

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

    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. can reach oauth2.googleapis.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    smtp-relay/worker.js, line 35

    async fetch(req, env) {

    src/routes/ai.js, line 32

    // Plain text is accepted too: a bot's curl often forgets the JSON header.

    src/services/ai_bus.js, line 254

    const res = await fetch(w.webhook.url, {

    Show more

    src/services/billing.js, line 50

    const res = await fetch(`${STRIPE_API}${path}`, {

    src/services/google_http.js, line 50

    const res = await fetch(url, {

    src/services/google_oauth.js, line 133

    const res = await fetch(TOKEN_URL, {

    src/services/google_oauth.js, line 181

    const res = await fetch(TOKEN_URL, {

    src/services/google_oauth.js, line 213

    const res = await fetch(USERINFO_URL, { headers: { Authorization: `Bearer ${accessToken}` } });

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/routes/gmail_link.js, line 125

    process.env.JWT_SECRET,

    src/routes/gmail_link.js, line 191

    process.env.JWT_SECRET,

    README.md, line 49

    cp .env.example .env # fill it in — see Setup below

    Show more

    src/routes/gmail_link.js, line 296

    const secret = (process.env.GOOGLE_CLIENT_SECRET || '').trim();

    src/routes/gmail_link.js, line 338

    state = jwt.verify(req.query.state || '', process.env.JWT_SECRET);

    src/services/ai_bus.js, line 43

    if (!process.env.JWT_SECRET) throw new Error('JWT_SECRET must be set');

    src/services/ai_bus.js, line 44

    return crypto.createHmac('sha256', process.env.JWT_SECRET).update('hub-ai-reply-link-v1').digest('base64');

    src/services/crypto_box.js, line 20

    const raw = process.env.TOKEN_ENC_KEY;

    src/services/google_oauth.js, line 96

    const clientSecret = (process.env.GOOGLE_CLIENT_SECRET || '').trim();

    README.md, line 313

    (see `.env.example`), then deploy. The schema applies itself on boot.

  • 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.

Get the full report on this tool, £49

Note

Hygiene check of commit 30f91b15de3f. can reach a host that is not written as a fixed address. can reach oauth2.googleapis.com. The description does not name that host. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 30f91b15de3f5236beb4bd6e3068aa7345d810ec

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