dcc-mcp-substance3d-designer 0.1.1

Substance 3D Designer adapter for the DCC Model Context Protocol ecosystem

dcc-mcp-substance3d-designer

Substance 3D Designer adapter for the DCC Model Context Protocol (MCP).

The package runs an embedded Streamable HTTP MCP server inside Designer, so tools execute through Designer's Qt main thread instead of a separate process.

Install and load

Install this package with the Python environment used by Substance 3D Designer:

python -m pip install dcc-mcp-substance3d-designer

In Designer, open Tools > Plugin Manager, browse to the installed dcc_mcp_substance3d_designer/designer_plugin.py, then load the plugin. The MCP endpoint defaults to http://127.0.0.1:8765/mcp.

Set DCC_MCP_SUBSTANCE3D_DESIGNER_PORT before launching Designer to choose a different port. Standard DCC_MCP_GATEWAY_PORT and DCC_MCP_REGISTRY_DIR settings are also honoured.

Bundled skills

designer-session provides read-only typed tools for inspecting the active Designer session and its loaded packages. Host APIs are imported only while a tool runs, so metadata discovery remains safe outside Designer.

Development

python -m pip install -e ".[dev]"
python -m pytest
ruff check src tests tools
python -m build

Releases use release-please. The release.yml workflow publishes through the pypi environment using PyPI Trusted Publishing.