dcc-mcp-marmoset

DCC-MCP · MARMOSET

Typed DCC-MCP control for Marmoset Toolbag 4.03+ and 5.x. A pure-Python Toolbag plugin executes mset calls on mset.callbacks.onPeriodicUpdate; an external DccServerBase process owns MCP, discovery, jobs, and gateway registration.

Install

python -m pip install dcc-mcp-marmoset

In Toolbag, choose Edit > Plugins > Show User Plugin Folder, copy that folder path, then run:

dcc-mcp-marmoset-install --plugin-dir "C:\path\shown\by\Toolbag"

Choose Edit > Plugins > Refresh, then launch dcc_mcp_marmoset. The plugin starts one host-bound adapter process per Toolbag process; relaunching the plugin reuses that runtime. Toolbag requires one visible plugin window to keep callbacks alive, so the adapter uses a single compact DCC-MCP lifetime window. Closing it stops the plugin. See install.md for details.

Agent workflow

Shell-capable agents use the shared CLI:

dcc-mcp-cli list
dcc-mcp-cli search --query "inspect Toolbag scene" --dcc-type marmoset
dcc-mcp-cli load-skill marmoset-scene --dcc-type marmoset
dcc-mcp-cli search --query "inspect Toolbag scene" --dcc-type marmoset
dcc-mcp-cli describe <tool-slug>
dcc-mcp-cli call <tool-slug> --json '{"max_objects":500}'

Use the exact slugs returned by search. IDE-only clients may connect to the gateway MCP endpoint at http://127.0.0.1:9765/mcp.

Typed tools

  • marmoset_scene__ping
  • marmoset_scene__inspect_scene
  • marmoset_scene__import_model
  • marmoset_scene__create_pbr_material
  • marmoset_scene__set_visibility
  • marmoset_scene__save_scene
  • marmoset_scene__render_camera

The adapter deliberately exposes no arbitrary Python execution. Its bridge is loopback-only, uses a per-launch random token, caps messages at 1 MiB, and expires queued requests before host mutation. Camera rendering is an async Core job backed by a monolithic Toolbag render call; check job/output state before retrying after a timeout.

Development

vx uv venv .venv --python 3.12
vx uv pip install --python .venv -e ".[dev]"
.venv\Scripts\python -m pytest
.venv\Scripts\python -m ruff check src tests tools
.venv\Scripts\python -m ruff format --check src tests tools
.venv\Scripts\python tools\lint_skills.py

The host API contract follows Marmoset's official Python scripting guide and Toolbag 5 Python API reference.

Project links

Data verified by PyPI on Jul 29, 2026
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Key dates

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  • Released:
Newer release available (0.1.2)

1 maintainer

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Avatar for hao.long from gravatar.com hao.long

Credits

Author: loonghao

GitHub Statistics

Data verified by PyPI on Jul 29, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT License (MIT)

Requires

Python >=3.9

Provides Extra

dev

Tags

dcc marmoset mcp model-context-protocol rendering toolbag

Classifiers

Report project as malware

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