Grades are a hygiene check, not a security guarantee.

MCP, MCP server

dev.getstub/check

Working reference integrations for Stub, the allegiance receipt registry for AI agents.

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 81e0f4dffe59, unchanged since the check below.

NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    insurance-advice/demo.py, line 45 with urllib.request.urlopen(req) as r:

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    insurance-advice/demo.py, line 45 with urllib.request.urlopen(req) as r:

  • SECRETS_ENV_READ Note

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

    acp-commerce/identity.mjs, line 67 if (process.env.STUB_KEYPAIR) {

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 api.openai.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    insurance-advice/demo.py, line 45

    with urllib.request.urlopen(req) as r:

    langchain-python/demo.py, line 50

    with urllib.request.urlopen(req) as r:

    mcp/check-server.js, line 23

    const res = await fetch(REGISTRY + path, { headers: { accept: 'application/json' } });

    Show more

    tool-loop/openai-model.js, line 5

    const res = await fetch('https://api.openai.com/v1/chat/completions', {

    vercel-ai-sdk/demo.mjs, line 26

    const res2 = await fetch(`${REGISTRY}/resolve/${out.receipt.split('/').pop()}`);

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    acp-commerce/identity.mjs, line 67

    if (process.env.STUB_KEYPAIR) {

    acp-commerce/identity.mjs, line 68

    return await Stub.fromKeys(JSON.parse(process.env.STUB_KEYPAIR), opts);

    insurance-advice/identity.py, line 87

    if os.environ.get("STUB_KEYPAIR"):

    Show more

    langchain-python/identity.py, line 87

    if os.environ.get("STUB_KEYPAIR"):

    langchain-python/live.py, line 10

    if not os.environ.get("OPENAI_API_KEY"):

    mcp/identity.mjs, line 67

    if (process.env.STUB_KEYPAIR) {

    mcp/identity.mjs, line 68

    return await Stub.fromKeys(JSON.parse(process.env.STUB_KEYPAIR), opts);

    tool-loop/identity.mjs, line 67

    if (process.env.STUB_KEYPAIR) {

  • 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 81e0f4dffe59. can reach a host that is not written as a fixed address. can reach api.openai.com. The description does not name that host. reads an environment variable.

Date and source

Date checked:

View source

github.com

Commit graded: 81e0f4dffe59113e01dfb7b1ec4295c2b2d21d7c

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