Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.ar-agents/mcp

One MCP server that bundles the entire @ar-agents/ toolkit: CUIT validation, AFIP/ARCA padron lookup, identity attestation, MercadoPago Payments + Subscriptions + Cuotas, WhatsApp Business: into any MCP host (Claude Desktop, Cursor, Codeium, Continue, Cline, etc.).

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.

INSTALL_UNPINNED NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_ENV_READ

Why this grade

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    package.json, line 88 @modelcontextprotocol/sdk

  • NETWORK_NO_FIXED_HOST Low

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

    src/guardrails.ts, line 157 const r = await fetch(`${base}/api/registry/good-standing?${q}`, {

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    src/guardrails.ts, line 157 const r = await fetch(`${base}/api/registry/good-standing?${q}`, {

  • SECRETS_ENV_READ Note

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

    src/registries/facturacion.ts, line 43 const keyPem = process.env.AFIP_KEY_PEM;

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 88

    @modelcontextprotocol/sdk

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach api.resend.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    src/guardrails.ts, line 157

    const r = await fetch(`${base}/api/registry/good-standing?${q}`, {

    src/registries/identity-attest.ts, line 37

    const res = await fetch("https://api.resend.com/emails", {

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    src/registries/facturacion.ts, line 43

    const keyPem = process.env.AFIP_KEY_PEM;

    src/registries/facturacion.ts, line 55

    const keyPath = process.env.AFIP_KEY_PATH?.trim();

    src/registries/identity-attest.ts, line 17

    const signingSecret = process.env.ATTEST_SIGNING_SECRET?.trim();

    Show more

    src/registries/identity-attest.ts, line 32

    const resendKey = process.env.RESEND_API_KEY?.trim();

    src/registries/identity-attest.ts, line 63

    const signingSecret = process.env.ATTEST_SIGNING_SECRET?.trim();

    src/registries/identity-attest.ts, line 67

    if (process.env.RESEND_API_KEY?.trim() && process.env.ATTEST_CALLBACK_URL?.trim())

    src/registries/identity.ts, line 20

    const keyPem = process.env.AFIP_KEY_PEM;

    src/registries/identity.ts, line 25

    const keyPath = process.env.AFIP_KEY_PATH?.trim();

  • 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 (packages/mcp/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 38b95ef6e34d. dependencies are not pinned. can reach a host that is not written as a fixed address. can reach api.resend.com. The description does not name that host. reads an environment variable.

Date and source

Date checked:

View source

github.com

Commit graded: 38b95ef6e34d6a3f3a9000c369dbe529929c294a

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