dcc-mcp-substance3d-painter
Enables AI agents to control Substance 3D Painter, inspecting projects and exporting texture sets via a secure preset-based tool.
README
dcc-mcp-substance3d-painter
Substance 3D Painter adapter for the DCC Model Context Protocol (MCP).
It embeds a Streamable HTTP MCP server in Painter and routes host API calls
through Painter's Qt main thread. The default endpoint is
http://127.0.0.1:8765/mcp.
Install and load
Install into the Python environment Painter uses:
python -m pip install dcc-mcp-substance3d-painter
Point SUBSTANCE_PAINTER_PLUGINS_PATH at the installed package's
dcc_mcp_substance3d_painter/painter folder. Painter discovers the packaged
plugins/dcc_mcp_substance3d_painter.py; enable it from the Python menu.
Set DCC_MCP_SUBSTANCE3D_PAINTER_PORT before launching Painter to choose a
different port. Standard DCC_MCP_GATEWAY_PORT and DCC_MCP_REGISTRY_DIR
settings are also honoured.
Bundled skills
painter-project inspects the current project and texture sets. Its typed
export tool exports texture sets using a caller-provided Painter export preset
URL, avoiding raw JavaScript or arbitrary script execution.
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.
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