Grades are a hygiene check, not a security guarantee.

MCP, MCP server

mysql_mcp_server

A Model Context Protocol (MCP) server that enables secure interaction with MySQL databases

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings 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 d88c510f6034, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    src/mysql_mcp_server/server.py, line 93 ssh_proc = subprocess.Popen(ssh_cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

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

    requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED

    src/mysql_mcp_server/server.py, line 93

    ssh_proc = subprocess.Popen(ssh_cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    requirements.txt, line 1

    mcp>=1.2.0

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/mysql_mcp_server/server.py, line 23

    # Load environment variables from .env file if it exists.

    src/mysql_mcp_server/server.py, line 70

    ssh_key = os.getenv("MYSQL_SSH_KEY_PATH")

    src/mysql_mcp_server/server.py, line 120

    password = os.getenv("MYSQL_PASSWORD")

    Show more

    CHANGELOG.md, line 66

    - **Environment Management:** Added `.env` support and `.env.example` file (PR #69).

    README.md, line 89

    ### `.env` file loading

    README.md, line 91

    On startup the server automatically loads a `.env` file via `python-dotenv`, so for local use you can simply:

    README.md, line 94

    cp .env.example .env # then edit with your credentials

    README.md, line 99

    > ⚠️ **Claude Code / Claude Desktop:** these hosts launch the server from their own working directory, so the project's `.env` will **not** be found and you'll see `Missing require

    README.md, line 225

    cp .env.example .env

    README.md, line 226

    # Edit .env with your MySQL connection details

  • 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 d88c510f6034. requests shell access. No manifest field names shell or command execution. dependencies are not pinned. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: d88c510f603413d1abad9c5cce2bd542d705e27c

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Read how this letter is chosen