Grades are a hygiene check, not a security guarantee.

MCP, MCP server

uspto_fpd_mcp

The uspto_fpd_mcp is a high-performance server designed to simplify access to the USPTO Final Petition Decisions API.

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.

PERMISSION_SHELL_UNDECLARED INSTALL_REMOTE_SCRIPT

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    src/fpd_mcp/shared/error_decorators.py, line 340 ... os.remove(path)

  • INSTALL_REMOTE_SCRIPT Medium

    Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).

    deploy/linux_setup.sh, line 56 if curl -LsSf https://astral.sh/uv/install.sh | sh; then

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

    Concern

    can delete files. requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES

    src/fpd_mcp/shared/error_decorators.py, line 340

    ... os.remove(path)

    SECURITY_GUIDELINES.md, line 314

    result = subprocess.run([

  • Install and update

    Serious

    install fetches a script from the network. The docs document an installer that pipes a download into a shell.

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    INSTALL.md, line 847

    curl -LsSf https://astral.sh/uv/install.sh | sh

    INSTALL.md, line 1113

    # Linux/macOS: curl -LsSf https://astral.sh/uv/install.sh | sh

    deploy/linux_setup.sh, line 56

    if curl -LsSf https://astral.sh/uv/install.sh | sh; then

    Show more

    deploy/linux_setup.sh, line 65

    echo -e "${YELLOW} curl -LsSf https://astral.sh/uv/install.sh | sh${NC}"

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    src/fpd_mcp/main.py, line 1643

    response = requests.get(f"http://localhost:{explicit_port}/", timeout=0.3)

    src/fpd_mcp/main.py, line 1671

    response = requests.get(f"http://localhost:{pfw_port}/", timeout=timeout)

    src/fpd_mcp/main.py, line 1686

    response = requests.get(f"http://localhost:{alt_port}/", timeout=timeout)

    Show more

    src/fpd_mcp/shared/error_decorators.py, line 36

    response = await httpx.get(url)

    src/fpd_mcp/shared/error_decorators.py, line 202

    ... response = requests.get(url)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    deploy/linux_setup.sh, line 187

    api_key = os.environ.get('SETUP_USPTO_KEY', '')

    deploy/linux_setup.sh, line 243

    api_key = os.environ.get('SETUP_MISTRAL_KEY', '')

    deploy/windows_setup.ps1, line 77

    api_key = os.environ.get('TEMP_USPTO_API_KEY', '')

    Show more

    deploy/windows_setup.ps1, line 151

    api_key = os.environ.get('TEMP_MISTRAL_API_KEY', '')

    src/fpd_mcp/api/fpd_client.py, line 59

    self.api_key = os.getenv("USPTO_API_KEY")

    src/fpd_mcp/api/fpd_client.py, line 508

    mistral_api_key = os.getenv("MISTRAL_API_KEY")

    src/fpd_mcp/config/settings.py, line 90

    kwargs['uspto_api_key'] = os.getenv('USPTO_API_KEY', '')

    src/fpd_mcp/config/settings.py, line 105

    kwargs['mistral_api_key'] = os.getenv('MISTRAL_API_KEY')

    src/fpd_mcp/proxy/server.py, line 20

    # Load environment variables from .env file

    .gitignore, line 28

    env/

    .gitignore, line 51

    # Environment variables - NEVER commit secrets!

    .gitignore, line 52

    .env

    .gitignore, line 53

    .env.local

    .gitignore, line 55

    *.env

    .security/check_prompt_injections.py, line 45

    '.log', '.env', '.sh', '.bat', '.ps1'

    SECURITY_GUIDELINES.md, line 33

    ⚠️ **IMPORTANT:** This MCP does NOT use `.env` files for security reasons. All API keys should be set via:

  • 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 28aa4374b550. can delete files. requests shell access. No manifest field names shell or command execution. install fetches a script from the network. The docs document an installer that pipes a download into a shell. 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: 28aa4374b550a95db39a61225ac75c5217a52160

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