Quickstart

pip install sphinx-likec4        # node >= 20 required at doc-build time

# conf.py
extensions = ["sphinx_likec4"]
likec4_source_dir = "model"      # your *.c4 / *.likec4 files

.. likec4-view:: index

That renders this (LikeC4’s official cloud-system example):

In a PDF or epub build the same directive embeds a static PNG instead; :render: png does that on an HTML page too — see Directives.