Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Agent Xplat

Find the OS assumptions that break AI-agent workflows.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    src/agent_xplat/diff.py, line 47 completed = subprocess.run(

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

    src/agent_xplat/diff.py, line 47

    completed = subprocess.run(

    src/agent_xplat/provenance.py, line 20

    return subprocess.run(['git', '-c', 'core.fsmonitor=false', *args], cwd=root,

    src/agent_xplat/verification.py, line 84

    completed = subprocess.run(command, cwd=root, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True, timeout=max(1, timeout), check=False)

    Show more

    src/agent_xplat/rules/source_context.py, line 11

    (``subprocess.run("NODE_ENV=production node build.js", shell=True)``).

    src/agent_xplat/rules/source_context.py, line 415

    - ``subprocess.run("cmd", ...)`` / ``subprocess.call`` / ``Popen`` /

    src/agent_xplat/rules/source_context.py, line 418

    - ``os.system("cmd")`` / ``os.popen("cmd")`` (also with ``os`` aliases

    docs/audit/fix-execution-context-false-positives.md, line 116

    - Python explicit shell-execution strings: `subprocess.run("NODE_ENV=production

    docs/audit/fix-execution-context-false-positives.md, line 143

    | `subprocess.run("NODE_ENV=production node build.js", shell=True)` | - | AX-SHELL-003 | detected (new) |

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Pass

    No network call found.

  • Secrets

    Pass

    No read of a credential file or secret environment variable found.

  • 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 8adf38bcb3ee. requests shell access. No manifest field names shell or command execution.

Date and source

Date checked:

View source

github.com

Commit graded: 8adf38bcb3eed15ab2afec9116482651f56000e8

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