Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Rhino Mcp

A Model Context Protocol (MCP) server that gives Claude, ChatGPT, Codex, Gemini or a local Ollama model full control of Rhino 8 / Rhinoceros 3D. Describe a building in plain language and watch it get modelled — massing, floor plates, cores, facades, vaults, plans, sections a

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 e7e389117517, unchanged since the check below.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_UNCONFIRMED SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    scripts/doctor.py, line 78 r = subprocess.run(

  • NETWORK_NO_FIXED_HOST Low

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

    scripts/doctor.py, line 107 s = socket.create_connection(("127.0.0.1", 9544), timeout=2)

  • SECRETS_PATH_UNCONFIRMED Low

    The Secrets check reports a credential or environment file, but no quoted line shows a recognisable path.

    scripts/patch_codex_config.py, line 52 r'\n?\[mcp_servers\.rhino_architect(?:\.env)?\]'

  • SECRETS_ENV_READ Note

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

    server/chat.py, line 678 api_key = args.api_key or os.environ.get("OPENAI_API_KEY", "local")

  • OBFUSCATION_FILE_OVER_READ_CAP Note

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

    plugin/CommandHandler.cs, line 1 // RhinoAIBridge v4.5 - CommandHandler.cs

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/doctor.py, line 78

    r = subprocess.run(

    scripts/doctor.py, line 93

    r = subprocess.run(

    scripts/doctor.py, line 172

    r = subprocess.run(["codex", "mcp", "list"], capture_output=True, text=True, timeout=5)

    Show more

    server/src/rhino_architect/doctor.py, line 48

    result = subprocess.run(["uv", "--version"], capture_output=True, text=True)

    server/src/rhino_architect/server.py, line 592

    return subprocess.run(args, capture_output=True, text=True, timeout=timeout_seconds)

    server/src/rhino_architect/server.py, line 2544

    shutil.rmtree(work, ignore_errors=True)

  • 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/doctor.py, line 107

    s = socket.create_connection(("127.0.0.1", 9544), timeout=2)

    server/chat.py, line 62

    self._sock = socket.create_connection((host, port), timeout=5.0)

    server/src/rhino_architect/doctor.py, line 75

    with socket.create_connection((PLUGIN_HOST, PLUGIN_PORT), timeout=2.0) as s:

    Show more

    server/src/rhino_architect/material_downloader.py, line 50

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

    server/src/rhino_architect/material_downloader.py, line 321

    with urllib.request.urlopen(req, timeout=60) as resp, open(tmp_path, "wb") as out:

    server/src/rhino_architect/server.py, line 110

    with socket.create_connection((host, port), timeout=3):

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_UNCONFIRMED

    scripts/patch_codex_config.py, line 52

    r'\n?\[mcp_servers\.rhino_architect(?:\.env)?\]'

    server/chat.py, line 678

    api_key = args.api_key or os.environ.get("OPENAI_API_KEY", "local")

    server/chat.py, line 682

    api_key = args.api_key or os.environ.get("OPENAI_API_KEY", "")

    Show more

    server/chat.py, line 689

    api_key = args.api_key or os.environ.get("OPENAI_API_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

    plugin/CommandHandler.cs, line 1

    // RhinoAIBridge v4.5 - CommandHandler.cs

    server/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 e7e389117517. 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: e7e38911751769c1c02c2a036b3098c76736a1d9

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