Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.alphavantage/alpha_vantage_mcp

io.github.alphavantage/alpha_vantage_mcp, an MCP server listed in the PlugVet directory.

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.

INSTALL_REMOTE_SCRIPT

Why this grade

  • 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).

    .github/workflows/publish-agent.yml, line 36 curl -LsSf https://astral.sh/uv/install.sh | sh

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

    mcp/src/av_mcp/cowork_connector/verify_oauth.py, line 677

    process = subprocess.Popen(

  • Install and update

    Serious

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

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    README.md, line 78

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

    README.md, line 338

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

    .github/workflows/publish-agent.yml, line 36

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

    Show more

    README.md, line 452

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

    README.md, line 504

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

    README.md, line 555

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

    README.md, line 595

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

    .github/workflows/publish-cli.yml, line 36

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

    .github/workflows/publish-mcp.yml, line 36

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

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    api/src/av_api/tools/openai.py, line 35

    def fetch(id: str) -> Dict[str, Any]:

    mcp/src/av_mcp/cowork_connector/validate.py, line 47

    with urllib.request.urlopen(location, timeout=30) as response:

    mcp/src/av_mcp/cowork_connector/verify_oauth.py, line 691

    httpx.get(

    Show more

    scripts/deploy.sh, line 68

    echo "📝 Test with: curl -X POST <endpoint-url> -H 'Content-Type: application/json' -d '{\"method\":\"initialize\"}'"

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    analytics/create-logs-processor-role.sh, line 6

    # Load environment variables from .env if it exists

    analytics/create-logs-processor-role.sh, line 7

    if [ -f ".env" ]; then

    analytics/create-logs-processor-role.sh, line 8

    echo "🔧 Loading environment variables from .env..."

    Show more

    analytics/create-logs-processor-role.sh, line 9

    export $(grep -v '^#' .env | xargs)

    analytics/deploy-analytics.sh, line 6

    # Load environment variables from .env if it exists

    analytics/deploy-analytics.sh, line 7

    if [ -f ".env" ]; then

    analytics/deploy-analytics.sh, line 8

    echo "🔧 Loading environment variables from .env..."

    analytics/deploy-analytics.sh, line 9

    export $(grep -v '^#' .env | xargs)

    api/src/av_api/client.py, line 12

    MAX_RESPONSE_TOKENS = int(os.environ.get('MAX_RESPONSE_TOKENS', '32000'))

    cli/src/av_cli/main.py, line 106

    api_key = local_api_key or ctx.obj.get('api_key') or os.getenv('ALPHAVANTAGE_API_KEY') or os.getenv('ALPHA_VANTAGE_API_KEY')

    ingest/app.py, line 89

    configured_secret = os.getenv("S3_INGEST_SECRET", "")

    mcp/src/av_mcp/analytics_emitter.py, line 127

    if not os.getenv("S3_INGEST_SECRET"):

    mcp/src/av_mcp/main.py, line 32

    api_key = api_key or api_key_option or os.getenv('ALPHA_VANTAGE_API_KEY')

    mcp/src/av_mcp/s3_ingest_client.py, line 19

    return bool(os.getenv("S3_INGEST_URL")) and bool(os.getenv("S3_INGEST_SECRET"))

    mcp/src/av_mcp/s3_ingest_client.py, line 39

    secret = os.getenv("S3_INGEST_SECRET")

    mcp/src/av_mcp/tokens.py, line 47

    secret = os.environ.get("JWT_SECRET_KEY", "")

  • 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

    web/package-lock.json, line 1

    {

  • 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 3ed9b05db06d. requests shell access. The manifest names this permission. install fetches a script from the network. README documents 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: 3ed9b05db06d16476d326a12441d68ad071b261a

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