Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Codex Openpencil

Codex Openpencil, a skill listed in the PlugVet directory.

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High. Only try it in a sandbox.

Graded by PlugVetRubric v2

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

PERMISSION_SHELL_UNDECLARED OBFUSCATION_ENCODED_BLOB

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    scripts/terminal-smoke.mjs, line 24 child=subprocess.Popen(sys.argv[1:],stdin=slave,stdout=slave,stderr=slave,close_fds=True)

  • OBFUSCATION_ENCODED_BLOB Medium

    Contains a long base64 shaped string in a file that should be readable.

    plugins/openpencil/ui/panel.html, line 4 <header><div class="brand"><img class="mark" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpg

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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/terminal-smoke.mjs, line 24

    child=subprocess.Popen(sys.argv[1:],stdin=slave,stdout=slave,stderr=slave,close_fds=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

    plugins/openpencil/scripts/editor-session.mjs, line 108

    const response = await fetch(`http://127.0.0.1:${this.port}/api/mcp/document`, { signal: AbortSignal.timeout(5_000) });

    plugins/openpencil/scripts/editor-session.mjs, line 126

    const response = await fetch(`http://127.0.0.1:${this.port}/api/mcp/version`, { signal: AbortSignal.timeout(5_000) });

    plugins/openpencil/scripts/runtime-download.mjs, line 69

    const request = https.get(url, { agent, signal, headers: { 'User-Agent': 'codex-openpencil-runtime', Accept: 'application/octet-stream' } }, resolve);

    Show more

    plugins/openpencil/scripts/transport.mjs, line 20

    const request = http.request({

    plugins/openpencil/ui/panel.js, line 62

    const response = await fetch(grant.rpcPath, { method: 'POST', headers: { 'Content-Type': 'application/json' },

    scripts/canvas-smoke.mjs, line 35

    assert.equal((await fetch(opened.structuredContent.panelUrl)).status,200);

    scripts/setup.mjs, line 28

    if (!(await fetch(opened.structuredContent.panelUrl)).ok) throw new Error('Canvas panel did not load.');

  • 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

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    plugins/openpencil/ui/panel.html, line 4

    <header><div class="brand"><img class="mark" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpg

  • 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 2bcdb288c335. requests shell access. No manifest field names shell or command execution. can reach a host that is not written as a fixed address. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 2bcdb288c335ae423fdf5e8f610b6d5d4694e25c

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