Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

CoalMine

CoalMine — 9 quality-canary skills for coding agents: rot-canary (code-health audit + auto-cadence hooks), gold-standard (world-class completeness; fills & adopts rules), source-grounding (anti-hallucination sourcing), supply-chain-audit (deps/build/artifact trust), resilience-a

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 e585a26d2e5a.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    hooks/coalmine-conductor.js, line 654 try { fs.rmSync(oldUpdateStampPath(), { force: true }); } catch { /* best-effort */ }

  • NETWORK_NO_FIXED_HOST Low

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

    scripts/front-door-links.test.mjs, line 101 const counting = (u, o) => { calls++; return fetch(u, o); };

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    scripts/secret-scan.test.mjs, line 138 ['a framework key, .env bare', 'SECRET' + `_KEY=${django}`],

  • SECRETS_ENV_READ Note

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

    scripts/prune-release-zips.mjs, line 52 const token = process.env.GITHUB_TOKEN;

  • OBFUSCATION_FILE_OVER_READ_CAP Note

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

    CHANGELOG.md, line 1 # Changelog

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

    can delete files.

    PERMISSION_DELETE_FILES

    hooks/coalmine-conductor.js, line 654

    try { fs.rmSync(oldUpdateStampPath(), { force: true }); } catch { /* best-effort */ }

    hooks/rot-canary-stop.js, line 670

    try { fs.unlinkSync(tmp); } catch {}

    hooks/rot-canary-stop.js, line 713

    try { fs.unlinkSync(f); } catch {}

    Show more

    hooks/rot-canary-stop.js, line 875

    try { fs.unlinkSync(stamp); } catch {}

    hooks/rot-canary-stop.js, line 903

    try { if (fs.statSync(p).mtimeMs < cutoff) fs.unlinkSync(p); } catch {}

    hooks/rot-canary-stop.js, line 927

    try { if (fs.statSync(p).mtimeMs < cutoff) fs.unlinkSync(p); } catch {}

    hooks/_shared/markers-write.js, line 13

    try { fs.unlinkSync(tmp); } catch {}

    plugin/hooks/coalmine-conductor.js, line 654

    try { fs.rmSync(oldUpdateStampPath(), { force: true }); } catch { /* best-effort */ }

    plugin/skills/scale-canary/references/checks.md, line 26

    | Node | `fs.*Sync`, `child_process.execSync`, `crypto.pbkdf2Sync`, JSON.parse on multi-MB payloads — inside server handlers |

    skills/scale-canary/references/checks.md, line 26

    | Node | `fs.*Sync`, `child_process.execSync`, `crypto.pbkdf2Sync`, JSON.parse on multi-MB payloads — inside server handlers |

  • 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

    scripts/front-door-links.test.mjs, line 101

    const counting = (u, o) => { calls++; return fetch(u, o); };

    scripts/prune-release-zips.mjs, line 40

    const r = await fetch(`${API}/repos/${repo}/releases/assets/${id}`, {

    plugin/skills/resilience-audit/references/checks.md, line 7

    | TS/JS | bare `fetch(url)` / axios without `timeout` | `AbortSignal.timeout(ms)` / axios `timeout` |

    Show more

    plugin/skills/resilience-audit/references/checks.md, line 9

    | Python | `requests.get(url)` with no `timeout=` (waits forever) | explicit `timeout=(connect, read)` |

    skills/resilience-audit/references/checks.md, line 7

    | TS/JS | bare `fetch(url)` / axios without `timeout` | `AbortSignal.timeout(ms)` / axios `timeout` |

    skills/resilience-audit/references/checks.md, line 9

    | Python | `requests.get(url)` with no `timeout=` (waits forever) | explicit `timeout=(connect, read)` |

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scripts/prune-release-zips.mjs, line 52

    const token = process.env.GITHUB_TOKEN;

    scripts/release-notes.test.mjs, line 273

    const saved = { HOME: process.env.HOME, GITHUB_TOKEN: process.env.GITHUB_TOKEN, GH_TOKEN: process.env.GH_TOKEN };

    scripts/secret-scan.test.mjs, line 138

    ['a framework key, .env bare', 'SECRET' + `_KEY=${django}`],

    Show more

    scripts/release-notes.test.mjs, line 274

    process.env.GITHUB_TOKEN = '

    scripts/secret-gate.test.mjs, line 326

    -- RED before UMB-456 (1) vi', { skip: process.env.SECRET_GATE_NESTED ? 'this is the nested run' : false }, (

    scripts/secret-scan.test.mjs, line 63

    'token = process.env.GITHUB_TOKEN_FOR_THIS_REPOSITORY',

    scripts/lib/publish-release.mjs, line 118

    const token = process.env.GITHUB_TOKEN;

    scripts/lib/test-spawn.test.mjs, line 55

    assert.match(src, /spawnSync\(process\.execPath, plan\.args, \{[^}]*env: plan\.env[^}]*timeout: plan\.timeout[^}]*killSignal: plan\.killSignal/);

    scripts/lib/wave-run.test.mjs, line 26

    ir: process.env.TMPDIR ?? null, secret: process.env.OPERATOR_SECRET ?? null })));\n",

    scripts/lib/wave-run.test.mjs, line 325

    process.env.OPERATOR_SECRET = '

    scripts/secret-scan.test.mjs, line 177

    ['.env, bare', 'SECRET' + `_ENV=${ENV277}`],

    scripts/lib/secret-scan.mjs, line 170

    // keys per generator and carrier (a .env line, a YAML line, quoted, followed by a call), none read

    evals/04-traversal-and-off-by-one/graders/ranks-traversal-above-doc-rot.md, line 13

    `name` onto `ROOT` with no containment check at all, so `../../.env` escapes

    plugin/skills/drift-canary/SKILL.md, line 20

    5. **Environment Configuration drift** — introducing new required config keys (`.env` / OS vars) without defaults or fallback.

  • 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

    CHANGELOG.md, line 1

    # Changelog

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit e585a26d2e5a. can delete files. 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: e585a26d2e5a5e56c6dd043d5d19f5b53c5dc8f7

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