Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.astrogilda/waitbus

The workstation-local, cross-harness status bus, a blocking wait/emit primitive that lets any agent or script wait on, or emit, CI / pytest / Docker / filesystem events (finish or fail) without polling, framework-agnostically.

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.

INSTALL_REMOTE_SCRIPT SECRETS_PATH_CREDENTIAL

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).

    scripts/_hetzner_provision_lib.sh, line 194 curl -LsSf https://astral.sh/uv/install.sh | sh

  • SECRETS_PATH_CREDENTIAL Medium

    Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).

    .github/CONTRIBUTING.md, line 259 git config user.signingkey ~/.ssh/id_ed25519.pub

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

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    benchmarks/_bench_preflight.py, line 238

    result = subprocess.run(

    benchmarks/_bench_preflight.py, line 353

    result = subprocess.run(

    benchmarks/_bench_shared.py, line 431

    proc: subprocess.Popen[bytes]

    Show more

    benchmarks/_bench_shared.py, line 884

    result = subprocess.run(

    benchmarks/_bench_shared.py, line 1059

    result = subprocess.run(

    benchmarks/_bench_shared.py, line 1075

    result = subprocess.run(

    benchmarks/_bench_swarm.py, line 174

    proc: subprocess.Popen[bytes] = subprocess.Popen(

    benchmarks/_harness.py, line 471

    out = subprocess.run(

  • 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 410

    `uv` must be on PATH (`curl -LsSf https://astral.sh/uv/install.sh | sh`).

    scripts/_hetzner_provision_lib.sh, line 194

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

    scripts/_hetzner_provision_lib.sh, line 218

    elif curl -fsSL https://get.docker.com | sh >/dev/null 2>&1; then

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach pypi.org. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    scripts/derive_gh_distributions.py, line 340

    return Path(fetcher.fetch(name))

    scripts/honker-upstream-probe.sh, line 7

    curl -s "https://pypi.org/simple/honker/" -H "Accept: application/vnd.pypi.simple.v1+json" \

    scripts/honker-upstream-probe.sh, line 12

    curl -sL "$tarball" | tar tz | grep -qE '\.(so|node)$' && echo "TRIGGER2_MET"

    Show more

    waitbus/_mcp_models.py, line 443

    "description": "Opaque ULID of the stored event to fetch (a prior event_id / cursor value).",

    examples/custom_source_plugin/README.md, line 17

    - How to implement the `SourcePlugin` Protocol (`spec()` + `fetch()`).

    examples/custom_source_plugin/README.md, line 162

    def fetch(self, *args: object, **kwargs: object) -> Iterator[EventInsert] | None:

    waitbus/cli/_shared.py, line 744

    with urllib.request.urlopen(f"http://127.0.0.1:{port}/metrics", timeout=2.0) as resp:

    waitbus/etag_poll.py, line 71

    """Socket-level timeout for ``urllib.request.urlopen`` calls to the GitHub API.

    waitbus/etag_poll.py, line 236

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

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    benchmarks/_bench_preflight.py, line 273

    env_key = os.environ.get("OPENAI_API_KEY", "").strip()

    scripts/stress/_real_drivers.py, line 148

    key = os.environ.get("OPENAI_API_KEY") or ""

    .github/CONTRIBUTING.md, line 259

    git config user.signingkey ~/.ssh/id_ed25519.pub

    Show more

    waitbus/_config.py, line 303

    keyword; waitbus uses neither (no .env file loader; secrets resolve

    waitbus/cli/allowlist.py, line 16

    ``~/.ssh/known_hosts``). Operators may edit it by hand; these

    waitbus/sources/_config.py, line 37

    exactly as ``cat ~/.ssh/known_hosts`` does. SQLite blobs cannot be

  • 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. the file cap was reached before every file was read.

    OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED

    uv.lock, line 1

    version = 1

    adapters/waitbus-langgraph/uv.lock, line 1

    version = 1

    adapters/waitbus-pydantic-ai/uv.lock, line 1

    version = 1

    Show more

    waitbus/_paths.py, line 1

    """Path-resolution factories for the waitbus event store.

  • 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 49b9b4eeb68a. 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. can reach pypi.org. The description does not name that host. reads a credential or environment file. a file was over the read cap and was not fully read. the file cap was reached before every file was read.

Date and source

Date checked:

View source

github.com

Commit graded: 49b9b4eeb68ad751199238125df20a6fe9d297ad

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