Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Zernio

Zernio, an MCP server listed in the PlugVet directory.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings 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 1cde5312083b.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    scripts/generate_models.py, line 74 result = subprocess.run(cmd, check=True, capture_output=True, text=True)

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

    Concern

    requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED

    scripts/generate_models.py, line 74

    result = subprocess.run(cmd, check=True, capture_output=True, text=True)

  • Install and update

    Note

    The docs document an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    docs/MCP.md, line 11

    curl -LsSf https://astral.sh/uv/install.sh | sh

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    scripts/smoketest_streamable_http.py, line 67

    r = httpx.get(f"{BASE}/health", timeout=0.5)

    scripts/smoketest_streamable_http.py, line 139

    r = httpx.post(

    scripts/smoketest_streamable_http.py, line 156

    r = httpx.get(f"{BASE}/sse", timeout=5.0)

    Show more

    scripts/smoketest_streamable_http.py, line 163

    r = httpx.get(f"{BASE}/")

    src/late/mcp/server.py, line 1011

    response = httpx.get(_DOCS_URL, timeout=30.0)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    examples/01_basic_usage.py, line 18

    api_key = os.getenv("LATE_API_KEY")

    examples/02_schedule_from_csv.py, line 18

    api_key = os.getenv("LATE_API_KEY")

    examples/03_cross_posting.py, line 18

    api_key = os.getenv("LATE_API_KEY")

    Show more

    examples/04_ai_content_generation.py, line 18

    late_key = os.getenv("LATE_API_KEY")

    examples/04_ai_content_generation.py, line 19

    openai_key = os.getenv("OPENAI_API_KEY")

    examples/05_download_tools.py, line 16

    api_key = os.getenv("LATE_API_KEY")

    examples/publish_post.py, line 12

    client = Late(api_key=os.getenv("LATE_API_KEY", ""))

    src/late/ai/providers/openai.py, line 36

    self._api_key = api_key or os.getenv("OPENAI_API_KEY")

    .dockerignore, line 15

    .env

    .dockerignore, line 16

    .env.local

    .gitignore, line 54

    .env

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    openapi.yaml, line 1

    openapi: 3.1.0

    uv.lock, line 1

    version = 1

    src/late/mcp/generated_tools.py, line 1

    """

    Show more

    src/late/models/_generated/models.py, line 1

    # generated by datamodel-codegen:

  • 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 1cde5312083b. requests shell access. No manifest field names shell or command execution. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 1cde5312083b2d63df56fca570e4126b9af70055

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