Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Touchstone

Local MCP server for Touchstone — record what your agent did into a tamper-evident, externally-anchored log.

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 09777cafd65a, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_ENV_READ

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    touchstone-mcp.mjs, line 100 const r = await fetch(CFG.base + path, {

  • SECRETS_ENV_READ Note

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

    touchstone-mcp.mjs, line 31 apiKey: process.env.TOUCHSTONE_API_KEY || '',

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

    Pass

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

  • 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

    touchstone-mcp.mjs, line 100

    const r = await fetch(CFG.base + path, {

    touchstone-mcp.mjs, line 110

    const r = await fetch(CFG.base + '/mcp', {

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    touchstone-mcp.mjs, line 31

    apiKey: process.env.TOUCHSTONE_API_KEY || '',

    touchstone-mcp.mjs, line 33

    if (process.env.TOUCHSTONE_SIGNING_KEY) return process.env.TOUCHSTONE_SIGNING_KEY.trim();

    touchstone-mcp.mjs, line 34

    if (process.env.TOUCHSTONE_KEY_FILE) {

    Show more

    touchstone-mcp.mjs, line 35

    try { return JSON.parse(readFileSync(process.env.TOUCHSTONE_KEY_FILE, 'utf8')).seed_b64; } catch { return ''; }

  • 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 09777cafd65a. can reach a host that is not written as a fixed address. reads an environment variable.

Date and source

Date checked:

View source

github.com

Commit graded: 09777cafd65a89621ebe824c0c79f508493daf3c

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