Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Engram Memory

Persistent semantic memory for AI agents.

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 761a7da48495, unchanged since the check below.

PERMISSION_DELETE_FILES INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    plugin.py, line 170 result = subprocess.run(cmd, cwd=str(SCRIPT_DIR), capture_output=True, text=True, timeout=30)

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    requirements.txt, line 1 qdrant-client>=1.7.0

  • NETWORK_NO_FIXED_HOST Low

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

    SKILL.md, line 338 curl "http://localhost:6333/collections/agent-memory/points/scroll" \

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 13 .env

  • SECRETS_ENV_READ Note

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

    docker/mcp/entrypoint.py, line 56 API_KEY = os.getenv("ENGRAM_API_KEY", "")

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

    can delete files.

    PERMISSION_DELETE_FILES

    plugin.py, line 170

    result = subprocess.run(cmd, cwd=str(SCRIPT_DIR), capture_output=True, text=True, timeout=30)

    bridge/project.py, line 52

    result = subprocess.run(

    scripts/engram_graph.py, line 197

    proc = subprocess.run(cmd, capture_output=True, text=True)

    Show more

    scripts/fastembed_setup.py, line 38

    subprocess.run([sys.executable, "-m", "venv", str(self.venv_path)], check=True)

    scripts/fastembed_setup.py, line 47

    subprocess.run([

    scripts/fastembed_setup.py, line 69

    result = subprocess.run([

    scripts/fastembed_setup.py, line 75

    subprocess.run(["docker", "start", "engram-qdrant"], check=True)

    scripts/fastembed_setup.py, line 79

    subprocess.run([

    scripts/fastembed_setup.py, line 226

    shutil.rmtree(self.venv_path)

    scripts/hooks/engram_hook.py, line 287

    os.remove(cache_path)

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    requirements.txt, line 1

    qdrant-client>=1.7.0

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    SKILL.md, line 338

    curl "http://localhost:6333/collections/agent-memory/points/scroll" \

    bridge/client.py, line 78

    resp = http.get(self._url("/health"))

    bridge/client.py, line 142

    resp = http.get(

    Show more

    bridge/client.py, line 209

    resp = http.get(

    context/tools/semantic_search.py, line 432

    print(" 2. Check FastEmbed service: curl http://localhost:11435/health")

    docker/all-in-one/init.sh, line 24

    if curl -sf http://localhost:6333/healthz >/dev/null 2>&1; then

    docker/all-in-one/init.sh, line 32

    if curl -sf http://localhost:11435/health >/dev/null 2>&1; then

    docker/all-in-one/init.sh, line 41

    if ! curl -sf http://localhost:6333/collections/agent-memory >/dev/null 2>&1; then

    docker/all-in-one/init.sh, line 42

    curl -sf -X PUT http://localhost:6333/collections/agent-memory \

    docker/mcp/dashboard.py, line 612

    const r = await fetch("/dashboard/timeline?" + params);

    docker/mcp/dashboard.py, line 622

    const r = await fetch("/search", {method:"POST", headers:{"Content-Type":"application/json"}, body:JSON.stringify({query, limit:20})});

    docker/mcp/dashboard.py, line 630

    const r = await fetch("/dashboard/stats");

    mcp/server.py, line 837

    with urllib.request.urlopen(req, timeout=15) as resp:

    mcp/server.py, line 943

    with urllib.request.urlopen(req, timeout=10) as resp:

    scripts/fastembed_setup.py, line 56

    response = requests.get("http://localhost:6333/collections", timeout=5)

    scripts/setup-context.sh, line 91

    if curl -s http://localhost:6333/health > /dev/null 2>&1; then

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    docker/mcp/entrypoint.py, line 56

    API_KEY = os.getenv("ENGRAM_API_KEY", "")

    mcp/server.py, line 978

    api_key=os.getenv("ENGRAM_API_KEY", ""),

    .gitignore, line 13

    .env

    Show more

    plugin/index.js, line 13

    const apiKey = cfg.apiKey || process.env.ENGRAM_API_KEY || "";

    sdks/python/engrammemory/client.py, line 65

    env = os.environ.get("ENGRAM_API_KEY", "")

    sdks/typescript/examples/basic-usage.ts, line 15

    const apiKey = process.env.ENGRAM_API_KEY;

    sdks/typescript/examples/feedback-loop.ts, line 16

    const apiKey = process.env.ENGRAM_API_KEY;

    sdks/typescript/examples/hive-sharing.ts, line 18

    const apiKey = process.env.ENGRAM_API_KEY;

    sdks/typescript/examples/hive-sharing.ts, line 35

    const keyPrefix = process.env.GRANT_KEY_PREFIX;

    .gitignore, line 12

    # Environment

    .gitignore, line 14

    .env.local

    README-community.md, line 260

    # In your MiroFish .env

    context/templates/web_app.yaml, line 566

    cp .env.example .env

    context/templates/web_app.yaml, line 787

    # Check .env file

  • 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 761a7da48495. can delete files. 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: 761a7da48495b0d5ddf7e1d505bf6e8c8f6d7101

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