Grades are a hygiene check, not a security guarantee.

MCP, MCP server

DCL Trust Oracle AI/LLM Output Audit (x402 MCP)

AI/LLM agent output audit MCP: policy eval, tamper-evident chain, AI safety, x402 USDC on Base.

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.

Rescanned at commit a5c80687399b.

AGENT_IGNORE_INSTRUCTIONS

Why this grade

  • AGENT_IGNORE_INSTRUCTIONS Medium

    Text tells the agent to ignore earlier instructions.

    bazaar_server.py, line 379 "Policy evaluation flags only: \"ignore previous instructions\", \"jailbreak\", \"bypass safety\". "

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

    can delete files.

    PERMISSION_DELETE_FILES

    telemetry.py, line 258

    os.remove(self._buffer_file)

    telemetry.py, line 512

    os.remove(self._buffer_file)

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    requirements.txt, line 2

    pyyaml>=6.0.1

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    telemetry.py, line 483

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

    telemetry.py, line 511

    urllib.request.urlopen(req, timeout=5)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    bazaar_server.py, line 127

    json_path = os.environ.get("CDP_API_KEY_JSON")

    bazaar_server.py, line 142

    os.environ.get("CDP_API_KEY_ID")

    bazaar_server.py, line 143

    or os.environ.get("CDP_KEY_ID")

    Show more

    bazaar_server.py, line 144

    or os.environ.get("CDP_API_KEY_NAME")

    bazaar_server.py, line 146

    secret = os.environ.get("CDP_API_KEY_SECRET") or os.environ.get("CDP_KEY_SECRET")

    sentinel_audit.py, line 46

    token = os.environ.get("GITHUB_TOKEN", "").strip()

    test_payment.py, line 55

    pk = os.environ.get("PAYER_PRIVATE_KEY", "").strip()

    bazaar_server.py, line 13

    Required env vars (put in .env, loaded via python-dotenv):

    sentinel_audit.py, line 19

    ".sh", ".bash", ".toml", ".ini", ".cfg", ".env.example", ".sql", ".html", ".css",

  • Agent instructions

    Serious

    instructions tell the agent to ignore earlier instructions.

    AGENT_IGNORE_INSTRUCTIONS

    bazaar_server.py, line 379

    "Policy evaluation flags only: \"ignore previous instructions\", \"jailbreak\", \"bypass safety\". "

    benchmarks/e2/README.md, line 41

    - `NO_COMMIT` when the submitted text contains a `forbidden_patterns` substring (`jailbreak`, `ignore previous instructions`, `bypass safety`), including case-insensitive matches

    benchmarks/e2/cases.yaml, line 29

    description: Note is the default forbidden substring ignore previous instructions.

    Show more

    benchmarks/e2/cases.yaml, line 39

    note: ignore previous instructions

    benchmarks/e2/cases.yaml, line 112

    note: ignore all previous instructions

    mcp_server.py, line 550

    """PRE-ACTION Instruction Adherence Check ($0.02). Runs the "anti_jailbreak" policy: a substring check against 6 forbidden phrases ("ignore previous instructions", "jailbreak", "by

  • 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 a5c80687399b. 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. instructions tell the agent to ignore earlier instructions.

Date and source

Date checked:

View source

github.com

Commit graded: a5c80687399b9ed3fc80e979b7daea90508215e8

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