Grades are a hygiene check, not a security guarantee.

MCP, MCP server

cairn

AI Context Continuity Engine — warns before the context window degrades, hands off a faithful 7-bucket brief, and keeps a decision/evidence ledger across sessions and models.

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.

INSTALL_LIFECYCLE_HOOK SECRETS_PATH_CREDENTIAL

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 45 prepare

  • SECRETS_PATH_CREDENTIAL Medium

    Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).

    src/core/host-detect.ts, line 40 claude: (home) => [join(home, ".claude.json"), join(home, ".claude", ".credentials.json")],

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

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 45

    prepare

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    src/calibration/effort-floor.test.ts, line 92

    for (const exec of [compactor, reviewer, bridge]) expect(exec.mock.calls[0][2].env).toEqual({ ...ISOLATION_ENV, CLAUDE_CODE_EFFORT_LEVEL: "high" });

    src/calibration/effort-floor.test.ts, line 124

    expect(codex.mock.calls[0][2].env).toBeUndefined();

    src/core/host-detect.ts, line 40

    claude: (home) => [join(home, ".claude.json"), join(home, ".claude", ".credentials.json")],

    Show more

    src/calibration/large-probe.ts, line 139

    "[T14] Tomas: Aktuelle `.env` (exakt so übernehmen):",

    src/calibration/provenance.ts, line 37

    const out = { ...env };

    src/surface/pre-compact.ts, line 21

    * NOT trusted: it also holds `.credentials.json`, `settings.json` and other files that must never be

    src/surface/surface.test.ts, line 193

    expect(isAllowedTranscriptPath("/home/u/.claude/.credentials.json", root)).toBe(false);

    src/surface/surface.test.ts, line 196

    expect(isAllowedTranscriptPath("/home/u/.claude/projects/../.credentials.jsonl", root)).toBe(false);

  • 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 fbe060f9afe6. runs a script at install time. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: fbe060f9afe670b6c0ae08cc31b39658c7a005b6

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