Grades are a hygiene check, not a security guarantee.

MCP, MCP server

mcp_rails_template

A simple Ruby on Rails application demonstrating how to integrate and use the ActionMCP gem.

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.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    app/mcp/jwt_identifier.rb, line 31 ENV.fetch("ACTION_MCP_JWT_SECRET") { Rails.application.secret_key_base }

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .dockerignore, line 46 /.env.example

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

    app/mcp/jwt_identifier.rb, line 31

    ENV.fetch("ACTION_MCP_JWT_SECRET") { Rails.application.secret_key_base }

    app/mcp/tools/fetch_weather_by_location_tool.rb, line 20

    response = http.request(request)

    config/environments/production.rb, line 37

    config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")

    Show more

    Gemfile, line 4

    gem "activerecord", ENV.fetch("RAILS_VERSION", "~> 8.1.0")

    Gemfile, line 5

    gem "railties", ENV.fetch("RAILS_VERSION", "~> 8.1.0")

    Gemfile, line 8

    gem "actionview", ENV.fetch("RAILS_VERSION", "~> 8.1.0")

    Gemfile, line 9

    gem "activejob", ENV.fetch("RAILS_VERSION", "~> 8.1.0")

    config/database.yml, line 4

    pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .dockerignore, line 11

    /.env*

    .dockerignore, line 46

    /.env.example

    .gitignore, line 5

    /.env

    Show more

    README.md, line 28

    Copy the provided `.env.example` file:

    README.md, line 31

    cp .env.example .env

    README.md, line 34

    Edit `.env` and fill in necessary values according to your setup (especially any required API keys for tools like `fetch_weather_by_location_tool`).

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Note

    no licence file found.

    LICENCE_MISSING

    No file path was stored.

    no licence file found.

  • 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 d6ea38eb8765. can reach a host that is not written as a fixed address. reads a credential or environment file. no licence file found.

Date and source

Date checked:

View source

github.com

Commit graded: d6ea38eb8765a8a3b908d0a98d910ecc36c8bc59

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