Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Yandex Mcp

Yandex Direct, Metrika, Webmaster, Wordstat MCP plus skills: Direct audit, Metrika period compare, Webmaster SEO health, Wordstat research, safe Direct changes.

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.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV PERMISSION_SHELL_DECLARED SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    src/zai_yandex/management.py, line 997 result = await adapter.http.request(

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    scripts/check_engineering.py, line 23 ENV_EXAMPLES = (".env.example", ".env.sample", ".env.template")

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    scripts/check_engineering.py, line 57 result = subprocess.run( # noqa: S603 -- fixed read-only Git command, no shell

  • SECRETS_ENV_READ Note

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

    src/zai_yandex/config.py, line 296 public_path = os.environ.get("YANDEX_MCP_PUBLIC_KEY_FILE", "")

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

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    scripts/check_engineering.py, line 57

    result = subprocess.run( # noqa: S603 -- fixed read-only Git command, no shell

    scripts/check_engineering.py, line 75

    ignored = subprocess.run( # noqa: S603 -- fixed read-only Git command, no shell

    scripts/verify.py, line 12

    result = subprocess.run([sys.executable, *args], cwd=ROOT)

    Show more

    scripts/verify_install.py, line 103

    result = subprocess.run(args, cwd=cwd, text=True, encoding="utf-8", capture_output=True, timeout=240)

    src/zai_yandex/setup.py, line 27

    who = subprocess.run(

    src/zai_yandex/setup.py, line 31

    subprocess.run(

    src/zai_yandex/update_check.py, line 104

    "update_command": commands.get(method) if available else None,

  • 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.

    NETWORK_NO_FIXED_HOST

    src/zai_yandex/management.py, line 997

    result = await adapter.http.request(

    src/zai_yandex/offline_conversions.py, line 126

    return await self.http.request(

    src/zai_yandex/offline_conversions.py, line 135

    return await self.http.request(

    Show more

    src/zai_yandex/adapters/audience.py, line 188

    lambda: self.http.request("GET", f"{self.base_url}{path}", headers=self._headers()),

    src/zai_yandex/adapters/audience.py, line 228

    response = await self.http.request(

    src/zai_yandex/adapters/direct.py, line 456

    lambda: self.http.request("POST", self.service_url(normalized), headers=headers, payload=values),

    src/zai_yandex/adapters/direct.py, line 565

    response = await self.http.request(

    src/zai_yandex/adapters/direct.py, line 629

    response = await self.http.request(

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scripts/check_engineering.py, line 23

    ENV_EXAMPLES = (".env.example", ".env.sample", ".env.template")

    scripts/check_engineering.py, line 38

    ".env",

    src/zai_yandex/config.py, line 296

    public_path = os.environ.get("YANDEX_MCP_PUBLIC_KEY_FILE", "")

    Show more

    scripts/check_engineering.py, line 39

    ".env.*",

    src/zai_yandex/oauth_device.py, line 576

    secret = (client_secret or os.environ.get("YANDEX_OAUTH_CLIENT_SECRET") or "").strip()

    .gitignore, line 8

    *.egg-info/

    .gitignore, line 9

    .env

    .gitignore, line 11

    !.env.example

    .gitignore, line 44

    /.env

    .gitignore, line 45

    /.env.*

  • 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.

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Note

Hygiene check of commit 812e8c54b708. requests shell access. The manifest names this permission. 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: 812e8c54b708d6fe130349518e83783765983823

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