Installation¶

Ontopoiesis is a Python package (3.11+), pure Python at runtime.

pip install ontopoiesis
# or, in a uv project
uv add ontopoiesis

This installs the ontopoiesis CLI and its dependencies, including ontoplexis (the OWL/XML ⇄ projection core) and the embedded Ladybug database.

Optional extras:

• Graphviz — required only for ontopoiesis render ... -o out.png (SVG and DOT rendering are pure Python).
• ROBOT / Protégé — to convert other OWL serializations to OWL/XML before build, and for reasoning.

Check the install:

ontopoiesis --help