Grades are a hygiene check, not a security guarantee.

MCP, MCP server

mirailens

Website • Documentation • NPM • GitHub

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 NETWORK_HOST_FROM_INPUT

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

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

    package.json, line 37 prepare

  • NETWORK_HOST_FROM_INPUT Medium

    A file takes a URL or endpoint as input and has no fixed host list.

    test-extension.js, line 4 const ws = new WebSocket('ws://localhost:3001');

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 37

    prepare

  • Network

    Serious

    accepts a host from input, with no fixed list in this file.

    NETWORK_HOST_FROM_INPUT

    test-extension.js, line 4

    const ws = new WebSocket('ws://localhost:3001');

    extension/background.js, line 1868

    const socket = new WebSocket(serverUrl);

    scratch/test-client.js, line 7

    const ws = new WebSocket('ws://127.0.0.1:29100');

    Show more

    README.md, line 44

    │ Local WebSocket (:29100)

    README.md, line 149

    1. **Local Boundary**: The MCP server and Chrome extension communicate via a local WebSocket (`127.0.0.1:29100`).

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 8

    # Local env files

    .gitignore, line 9

    .env.local

    .gitignore, line 10

    .env.development.local

    Show more

    .gitignore, line 11

    .env.test.local

    docs/release-checklist.md, line 17

    - [ ] Confirm no local developer credential profiles, private keys, or `.env` files are captured in the pack list.

  • 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.

Get the full report on this tool, £49

Note

Hygiene check of commit e2885bc66706. runs a script at install time. accepts a host from input, with no fixed list in this file. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: e2885bc66706fc2cb685e8145ded96af4c404cd9

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