Grades are a hygiene check, not a security guarantee.

MCP, MCP server

friday

friday, an MCP server listed in the PlugVet directory.

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High finding. 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.

Rescanned at commit fad2a61c38eb, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED INSTALL_REMOTE_SCRIPT

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    mcp/server.py, line 64 token = subprocess.check_output(

  • 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).

    install.sh, line 4 # Usage: curl -fsSL https://raw.githubusercontent.com/friday-memory/friday/main/install.sh | bash

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

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

    PERMISSION_SHELL_UNDECLARED

    mcp/server.py, line 64

    token = subprocess.check_output(

    scripts/deploy/gcp_candidate.py, line 54

    result = subprocess.run(

    scripts/deploy/gcp_candidate.py, line 150

    sha = subprocess.check_output(["git", "rev-parse", "HEAD"], cwd=ROOT, text=True).strip()

    Show more

    scripts/deploy/gcp_candidate.py, line 154

    archive = subprocess.check_output(["git", "archive", "HEAD"], cwd=ROOT)

    scripts/deploy/gcp_candidate.py, line 156

    subprocess.run(["tar", "-xp", "-C", temp], input=archive, check=True)

    scripts/deploy/gcp_candidate.py, line 260

    subprocess.run(

    scripts/deploy/gcp_candidate.py, line 405

    subprocess.run(

    scripts/migration/export_current_state.py, line 65

    subprocess.check_output(

  • Install and update

    Serious

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

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    README.md, line 290

    curl -fsSL https://raw.githubusercontent.com/friday-memory/friday/main/install.sh | bash

    install.sh, line 4

    # Usage: curl -fsSL https://raw.githubusercontent.com/friday-memory/friday/main/install.sh | bash

    Dockerfile.serverless, line 5

    RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    install.sh, line 89

    if curl -s -f http://localhost/health >/dev/null 2>&1 || curl -s -f http://localhost:8000/health >/dev/null 2>&1; then

    studio/index.html, line 2038

    const res = await fetch(`${BRAIN_API}/api/graph-data`);

    studio/index.html, line 2212

    const res = await fetch(`${BRAIN_API}/state`);

    Show more

    studio/index.html, line 2240

    const res = await fetch(`${BRAIN_API}/api/dream/trigger`, { method: 'POST' });

    studio/index.html, line 2565

    await fetch(`${BRAIN_API}/api/synapse/reinforce/${encodeURIComponent(selectedNode.id)}`, { method: 'POST' });

    studio/index.html, line 2574

    const res = await fetch(`${BRAIN_API}/facts?include_superseded=false`);

    studio/index.html, line 2708

    await fetch(`${BRAIN_API}/api/synapse/reinforce/${encodeURIComponent(factId)}`, { method: 'POST' });

    studio/index.html, line 2763

    const res = await fetch(`${BRAIN_API}/api/search-quick?q=` + encodeURIComponent(q));

    studio/index.html, line 2893

    const res = await fetch(`${BRAIN_API}/api/node/${encodeURIComponent(selectedNode.id)}`, { method: 'DELETE' });

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    install.sh, line 55

    if [ ! -f ".env" ]; then

    install.sh, line 56

    echo -e "${CYAN}→ Generating secure configuration (.env)...${NC}"

    install.sh, line 57

    cp .env.example .env

    Show more

    install.sh, line 65

    sed -i '' "s/FRIDAY_API_KEY=.*/FRIDAY_API_KEY=${SEC_KEY}/" .env

    install.sh, line 66

    sed -i '' "s/NEO4J_PASSWORD=.*/NEO4J_PASSWORD=${NEO_PASS}/" .env

    install.sh, line 68

    sed -i "s/FRIDAY_API_KEY=.*/FRIDAY_API_KEY=${SEC_KEY}/" .env

    install.sh, line 69

    sed -i "s/NEO4J_PASSWORD=.*/NEO4J_PASSWORD=${NEO_PASS}/" .env

    install.sh, line 73

    echo -e "${GREEN}✓ Existing .env detected.${NC}"

    friday/client.py, line 41

    api_key or os.environ.get("FRIDAY_API_KEY") or os.environ.get("BRAIN_API_KEY") or ""

    gateway/main.py, line 40

    FRIDAY_API_KEY: str = os.getenv("FRIDAY_API_KEY") or os.getenv(

    gateway/main.py, line 46

    NEO4J_PASSWORD: str = os.getenv("NEO4J_PASSWORD", "change_this_strong_password")

    gateway/main.py, line 47

    MEM0_API_KEY: str = os.getenv("MEM0_API_KEY", "")

    gateway/main.py, line 48

    DEEPSEEK_KEY: str = os.getenv("DEEPSEEK_API_KEY", "")

    gateway/main.py, line 77

    expected_key = os.getenv("FRIDAY_API_KEY") or os.getenv("BRAIN_API_KEY") or FRIDAY_API_KEY

    gateway/serverless.py, line 108

    key = api_key or os.getenv("FRIDAY_API_KEY") or os.getenv("BRAIN_API_KEY")

    mcp/server.py, line 38

    API_KEY: str = os.getenv("FRIDAY_API_KEY") or os.getenv("BRAIN_API_KEY", "change_me")

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    uv.lock, line 1

    version = 1

  • 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 fad2a61c38eb. requests shell access. No manifest field names shell or command execution. install fetches a script from the network. README documents an installer that pipes a download into a shell. 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. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: fad2a61c38eb77058e4ecb71a558fd579e671dce

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