Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp For Blender

Community plugin to control Blender 3D with any LLM of your choice.

Compatibility: Portable across standard formats.

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 5a3618fccb2d.

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).

    install.sh, line 4 # curl -LsSf https://www.mcp-for-blender.com/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.

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

    src/blender_mcp/server.py, line 707

    os.remove(temp_path)

    src/blender_mcp/server.py, line 1663

    os.remove(path)

    src/blender_mcp/setup_cli.py, line 465

    proc = subprocess.run(args, capture_output=True, text=True, errors="replace", timeout=60)

    Show more

    src/blender_mcp/setup_cli.py, line 586

    proc = subprocess.run([executable, "--version"], capture_output=True, text=True, errors="replace", timeout=60)

    src/blender_mcp/setup_cli.py, line 607

    proc = subprocess.run(["tasklist", "/FI", "IMAGENAME eq blender.exe", "/NH"],

    src/blender_mcp/setup_cli.py, line 610

    proc = subprocess.run(["pgrep", "-xi", "blender"], capture_output=True, text=True, timeout=15)

    src/blender_mcp/setup_cli.py, line 641

    proc = subprocess.run(

    src/blender_mcp/trajectory.py, line 744

    os.remove(temp_path)

    src/blender_mcp/update_cli.py, line 71

    proc = subprocess.run([uv, "tool", "list"], capture_output=True, text=True, errors="replace", timeout=30)

    src/blender_mcp/update_cli.py, line 84

    proc = subprocess.run([uv, "tool", "upgrade", PACKAGE])

    src/blender_mcp/update_cli.py, line 94

    proc = subprocess.run(command, env={**os.environ, REEXEC_ENV: current})

  • Install and update

    Serious

    install fetches a script from the network. The docs document an installer that pipes a download into a shell.

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    install.sh, line 4

    # curl -LsSf https://www.mcp-for-blender.com/install.sh | sh

    install.sh, line 33

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

    install.sh, line 35

    wget -qO- https://astral.sh/uv/install.sh | sh

    Show more

    README.md, line 48

    curl -LsSf https://www.mcp-for-blender.com/install.sh | sh

    README.md, line 85

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

    README.md, line 224

    curl -LsSf https://www.mcp-for-blender.com/install.sh | sh

    README.md, line 269

    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

    install.sh, line 32

    if command -v curl >/dev/null 2>&1; then

    install.sh, line 34

    elif command -v wget >/dev/null 2>&1; then

    src/blender_mcp/telemetry.py, line 295

    response = httpx.post(

    Show more

    src/blender_mcp/telemetry.py, line 331

    response = httpx.post(

    src/blender_mcp/trajectory.py, line 1433

    response = httpx.post(

    src/blender_mcp/update_cli.py, line 52

    response = httpx.get(PYPI_URL, timeout=timeout, follow_redirects=True)

    addon.py, line 438

    response = requests.get(

    addon.py, line 497

    response = requests.get(

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 29

    .env

    .gitignore, line 31

    supabase/.env

  • 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

    addon.py, line 1

    # Code created by Siddharth Ahuja: www.github.com/ahujasid © 2025

    src/blender_mcp/bundled/addon.py, line 1

    # Code created by Siddharth Ahuja: www.github.com/ahujasid © 2025

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 5a3618fccb2d. can delete files. install fetches a script from the network. 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: 5a3618fccb2d982d0dd61e7a1879912c3100073b

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