Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mnemosyne OS

Mnemosyne OS, an MCP server listed in the PlugVet directory.

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 a122d3ec323c.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    cli/src/commands/prompt.ts, line 247 fs.rmSync(dest, { recursive: true });

  • NETWORK_NO_FIXED_HOST Low

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

    cli/src/commands/config.ts, line 209 const res = await fetch(`${endpoint}/api/tags`, { signal: AbortSignal.timeout(2000) });

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 23 .env

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

    cli/src/commands/prompt.ts, line 247

    fs.rmSync(dest, { recursive: true });

    cli/src/lib/resonance.ts, line 205

    if (fs.existsSync(readMarker)) fs.unlinkSync(readMarker);

    packages/mcp/src/cockpit-desktop.test.ts, line 32

    fs.rmSync(t, { recursive: true, force: true });

    Show more

    packages/mcp/src/cockpit-desktop.test.ts, line 45

    fs.rmSync(t, { recursive: true, force: true });

    packages/mcp/src/cockpit-hook-plan.test.ts, line 55

    fs.rmSync(dir, { recursive: true, force: true });

    packages/mcp/src/cockpit-hook-plan.test.ts, line 128

    fs.rmSync(dir, { recursive: true, force: true });

    packages/mcp/src/cockpit-hook-plan.test.ts, line 173

    fs.rmSync(dir, { recursive: true, force: true });

    packages/mcp/src/cockpit-hook-plan.test.ts, line 199

    fs.rmSync(dir, { recursive: true, force: 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

    cli/src/commands/config.ts, line 209

    const res = await fetch(`${endpoint}/api/tags`, { signal: AbortSignal.timeout(2000) });

    cli/src/commands/config.ts, line 229

    const res = await fetch(`${endpoint}/api/generate`, {

    packages/create-app/bin/create.js, line 37

    Mnemosyne OS over WebSocket (ws://127.0.0.1:7799).

    Show more

    packages/mcp/src/ws-client.ts, line 295

    const ws = new WebSocket(url);

    packages/sdk/src/browser-client.ts, line 114

    const ws = new WebSocket(url);

    packages/sdk/src/client.ts, line 4

    * Main SDK client. Dual transport: WebSocket (external) + Electron IPC (embedded).

    packages/sdk/src/client.ts, line 147

    this.ws = new WebSocket(url);

    packages/sdk/src/types.ts, line 147

    * 'ws' → local WebSocket (Node.js app external to Mnemosyne)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 23

    .env

    examples/cartridge-boilerplate/AGENTS.md, line 173

    | `hermes.channels` | `hermes:control` | Messaging-platform census of the local install (.env prefix heuristic; Telegram's exact documented variables). Read-only. | `pluginHermesAc

    examples/cartridge-boilerplate/AGENTS.md, line 174

    | `hermes.channelSetTelegram` | `hermes:control` | Write the Telegram bot token / allowed user ids into the install's .env on the human's click — validated shapes only, backup firs

    Show more

    examples/cartridge-boilerplate/AGENTS.md, line 203

    | `hermes.searchSetBrave` | `hermes:control` | Write or remove the person's own Brave Search key (.env, backup first). | `pluginHermesActions.ts` |

    llms.txt, line 115

    | `hermes.channels` | `hermes:control` | Messaging-platform census of the local install (.env prefix heuristic; Telegram's exact documented variables). Read-only. | `pluginHermesAc

  • 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 a122d3ec323c. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: a122d3ec323c3cf84b5800caccbcd48b8dc70b5c

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