Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Thrifle

Ask about any US retailer's return policy (graded A+ to D−), price-match rules, military and student discounts, birthday freebies, how to cancel a subscription, live deals, store credit cards, and whether an Amazon price is worth buying now.

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 3fae407c47ad, unchanged since the check below.

INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    package.json, line 19 @modelcontextprotocol/sdk

  • NETWORK_NO_FIXED_HOST Low

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

    scripts/test-mcp-server.js, line 309 const r = await fetch(base);

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    src/deal-lifecycle.js, line 17 // 60-day window by setting DEAL_DEAD_CUTOFF_DAYS=60 in .env - no deploy.

  • SECRETS_ENV_READ Note

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

    scripts/test-mcp-server.js, line 31 delete process.env.MCP_API_KEYS;

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

    dependencies are not pinned.

    INSTALL_UNPINNED

    package.json, line 19

    @modelcontextprotocol/sdk

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    scripts/test-mcp-server.js, line 309

    const r = await fetch(base);

    scripts/test-mcp-server.js, line 314

    const es = await fetch(base, { headers: { accept: "text/event-stream" } });

    scripts/test-mcp-server.js, line 316

    const del = await fetch(base, { method: "DELETE" });

    Show more

    scripts/test-mcp-server.js, line 333

    const r = await fetch(base, { method: "POST", headers: { "cont

    src/api-client.js, line 63

    const r = await fetch(key, { headers, signal: ctrl.signal });

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scripts/test-mcp-server.js, line 31

    delete process.env.MCP_API_KEYS;

    scripts/test-mcp-server.js, line 323

    process.env.MCP_API_KEYS = "

    src/deal-lifecycle.js, line 17

    // 60-day window by setting DEAL_DEAD_CUTOFF_DAYS=60 in .env - no deploy.

    Show more

    scripts/test-mcp-server.js, line 337

    delete process.env.MCP_API_KEYS;

    src/rate-limit.js, line 15

    * A caller presenting a key from MCP_API_KEYS (comma-separated, .env) skips

    src/rate-limit.js, line 32

    return String(process.env.MCP_API_KEYS || "")

    src/tools.js, line 680

    keyed: !!(req && presentedKey(req) && process.env.MCP_API_KEYS),

    .gitignore, line 1

    node_modules/

  • 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.

Note

Hygiene check of commit 3fae407c47ad. dependencies are not pinned. 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: 3fae407c47ad1f33c82a7c7d016d3ee65666ba73

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