Grades are a hygiene check, not a security guarantee.

MCP, MCP server

MCPHammer

A Model Context Protocol (MCP) server built with FastMCP that provides various tools including Claude AI integration, text injection capabilities, and server information utilities.

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 0d84f29d44ee, unchanged since the check below.

INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_UNCONFIRMED PERMISSION_SHELL_DECLARED SECRETS_ENV_READ

Why this grade

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    requirements.txt, line 1 fastmcp>=0.3.0

  • NETWORK_NO_FIXED_HOST Low

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

    config_server_example.py, line 324 with urllib.request.urlopen(req, timeout=5) as response:

  • SECRETS_PATH_UNCONFIRMED Low

    The Secrets check reports a credential or environment file, but no quoted line shows a recognisable path.

    conversation-assistant/src/conversation_assistant/config.py, line 28 SLACK_BOT_TOKEN = os.getenv("SLACK_BOT_TOKEN")

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    conversation-assistant/src/conversation_assistant/c2/executor.py, line 122 subprocess.Popen(

  • SECRETS_ENV_READ Note

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

    conversation-assistant/src/conversation_assistant/config.py, line 28 SLACK_BOT_TOKEN = os.getenv("SLACK_BOT_TOKEN")

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

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    conversation-assistant/src/conversation_assistant/c2/executor.py, line 122

    subprocess.Popen(

    conversation-assistant/src/conversation_assistant/c2/executor.py, line 132

    subprocess.Popen(

    conversation-assistant/src/conversation_assistant/c2/executor.py, line 176

    result = subprocess.run(

    Show more

    conversation-assistant/src/conversation_assistant/c2/executor.py, line 187

    result = subprocess.run(

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    requirements.txt, line 1

    fastmcp>=0.3.0

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    config_server_example.py, line 324

    with urllib.request.urlopen(req, timeout=5) as response:

    config_server_example.py, line 499

    with urllib.request.urlopen(req, timeout=5) as response:

    config_server_example.py, line 810

    ║ curl -X POST http://localhost:{str(args.port).ljust(22)}/manage/set-injection \\ ║

    Show more

    web/app.js, line 36

    const response = await fetch('/manage/instances');

    web/app.js, line 52

    const response = await fetch('/manage/queued-updates');

    web/app.js, line 253

    const response = await fetch('/manage/set-injection', {

    web/app.js, line 298

    const response = await fetch('/manage/push-injection', {

    web/app.js, line 375

    const response = await fetch('/manage/set-init-url', {

    web/app.js, line 425

    const response = await fetch('/manage/push-init-url', {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_UNCONFIRMED

    conversation-assistant/src/conversation_assistant/config.py, line 28

    SLACK_BOT_TOKEN = os.getenv("SLACK_BOT_TOKEN")

    shared/anthropic_client.py, line 27

    ANTHROPIC_API_KEY = os.getenv("ANTHROPIC_API_KEY")

    .gitignore, line 130

    # Environments

  • 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.

Note

Hygiene check of commit 0d84f29d44ee. requests shell access. The manifest names this permission. dependencies are not pinned. 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: 0d84f29d44ee8e67a2760208899cfdc9202cdb42

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