Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Songgeneration Mcp

Local open-weight music generation: Tencent SG2/LeVo2 via Studio, plus Lyria, ACE-Step, MusicGen and Stable Audio backends.

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.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    scripts/cua-smoke.py, line 288 subprocess.run(["taskkill", "/F", "/IM", f"{name}.exe", "/T"], capture_output=True, timeout=10)

  • NETWORK_NO_FIXED_HOST Low

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

    scripts/cua-smoke.py, line 335 resp = urllib.request.urlopen(f"{BACKEND_URL}{HEALTH_PATH}", timeout=5)

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    native/build.ps1, line 70 # Bundle .env into installer if it exists (survives reinstall, no manual copy needed)

  • SECRETS_ENV_READ Note

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

    src/songgeneration_mcp/acestep.py, line 35 self.api_key = os.getenv("ACESTEP_API_KEY") or ""

  • OBFUSCATION_FILE_OVER_READ_CAP Note

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

    uv.lock, line 1 version = 1

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

    scripts/cua-smoke.py, line 288

    subprocess.run(["taskkill", "/F", "/IM", f"{name}.exe", "/T"], capture_output=True, timeout=10)

    scripts/cua-smoke.py, line 309

    r = subprocess.run([installer, "/S"], capture_output=True, timeout=120)

    scripts/cua-smoke.py, line 331

    subprocess.Popen([exe], cwd=INSTALL_DIR, env=env)

    Show more

    scripts/cua-smoke.py, line 725

    r = subprocess.run([uninstaller, "/S"], capture_output=True, timeout=60)

    scripts/cua-smoke.py, line 728

    remaining = subprocess.run(

    scripts/cua-webapp-test.py, line 110

    subprocess.run( # noqa: S603 - fixed literal command array, local test script

    scripts/cua-webapp-test.py, line 117

    os.remove(path)

    scripts/cua-webapp-test.py, line 138

    subprocess.Popen( # noqa: S603 - fixed literal command array, local test script

    scripts/cua-webapp-test.py, line 163

    subprocess.Popen( # noqa: S603 - fixed literal command array, local test script

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    scripts/cua-smoke.py, line 335

    resp = urllib.request.urlopen(f"{BACKEND_URL}{HEALTH_PATH}", timeout=5)

    scripts/cua-smoke.py, line 405

    resp = urllib.request.urlopen(f"{BACKEND_URL}{FEATURE_PATH}", timeout=5)

    scripts/cua-smoke.py, line 419

    resp = urllib.request.urlopen(f"{BACKEND_URL}{DIAGNOSTICS_PATH}", timeout=5)

    Show more

    scripts/cua-smoke.py, line 630

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

    scripts/cua-smoke.py, line 665

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

    scripts/cua-webapp-test.py, line 183

    r = urllib.request.urlopen(url, timeout=3) # noqa: S310 - localhost health poll from config

    scripts/cua-webapp-test.py, line 203

    r = urllib.request.urlopen(url, timeout=3)

    scripts/cua-webapp-test.py, line 402

    r = urllib.request.urlopen(f"{BACKEND_URL}/api/v1/diagnostics", timeout=5) # noqa: S310 - localhost diagnostics check

    tools/_debug_studio_payload.py, line 15

    r = httpx.post("http://127.0.0.1:10930/api/generate", json=sr, timeout=30)

    web_sota/src/pages/quick.tsx, line 45

    await fetch(`http://127.0.0.1:11116/api/v1/deck/${deck}/load`, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    native/build.ps1, line 70

    # Bundle .env into installer if it exists (survives reinstall, no manual copy needed)

    native/build.ps1, line 71

    $envSrc = "$Root\.env"

    src/songgeneration_mcp/acestep.py, line 35

    self.api_key = os.getenv("ACESTEP_API_KEY") or ""

    Show more

    native/build.ps1, line 73

    Copy-Item $envSrc "$ResourceDir\.env" -Force

    native/build.ps1, line 74

    Write-Host " Bundled .env ($((Get-Item $envSrc).Length) bytes)" -ForegroundColor Green

    native/build.ps1, line 76

    Write-Host " WARNING: No .env at repo root - create one from .env.example for credentials" -ForegroundColor DarkYellow

    native/build.ps1, line 77

    Set-Content -Path "$ResourceDir\.env" -Value "# Empty - configure via Settings page" -Encoding utf8

    native/src/backend.rs, line 141

    .env(ENV_PORT, BACKEND_PORT.to_string())

    native/src/backend.rs, line 142

    .env(ENV_HOST, "127.0.0.1")

    src/songgeneration_mcp/server.py, line 218

    if not os.environ.get("GOOGLE_APPLICATION_CREDENTIALS"):

    src/songgeneration_mcp/server.py, line 281

    token = settings.get("hf_token") or os.environ.get("HF_TOKEN")

    src/songgeneration_mcp/server.py, line 485

    hf_token = load_settings().get("hf_token") or os.environ.get("HF_TOKEN") or None

    src/songgeneration_mcp/server.py, line 1071

    "hf_token_configured": bool(settings.get("hf_token") or os.environ.get("HF_TOKEN")),

    src/songgeneration_mcp/server.py, line 1152

    "hf_token_configured": bool(settings.get("hf_token") or os.environ.get("HF_TOKEN")),

    src/songgeneration_mcp/settings_store.py, line 73

    env_hf_token = os.getenv("HF_TOKEN", "").strip()

  • 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.

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Note

Hygiene check of commit baeab72256c3. can delete files. 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: baeab72256c32d640a3f8c66b78bcb7b97efd72e

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Read how this letter is chosen