Grades are a hygiene check, not a security guarantee.

Claude Code, Plugin

System Design Skills

A divide-and-conquer wiki of system-design skills for Claude Code — reason about scalable systems, don't memorize architectures.

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 a70772efb956, unchanged since the check below.

NETWORK_NO_FIXED_HOST PERMISSION_SHELL_DECLARED

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    skills/api-design/references/deep-dive.md, line 105 stream, auto-reconnect), WebSocket (full-duplex, stateful). Escalate only when

  • PERMISSION_SHELL_DECLARED Note

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

    meta/evals/run_checks.py, line 49 r = subprocess.run([sys.executable, test], 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

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    meta/evals/run_checks.py, line 49

    r = subprocess.run([sys.executable, test], capture_output=True, text=True)

  • 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

    skills/api-design/references/deep-dive.md, line 105

    stream, auto-reconnect), WebSocket (full-duplex, stateful). Escalate only when

    skills/content-delivery/references/providers/aws.md, line 8

    distribution; collapses PoP misses into one origin fetch (→ origin shield option).

  • 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.

Note

Hygiene check of commit a70772efb956. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address.

Date and source

Date checked:

View source

github.com

Commit graded: a70772efb956e8c9b78ef5b7538dee00cc3b9263

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