Installation

pip install akad-framework                   # core — Airflow workers, pipelines
pip install "akad-framework[registry]"       # + registry server
pip install "akad-framework[all]"            # everything

The core install (pip install akad-framework) pulls in only what a pipeline worker needs to run validation: httpx, pandas, pyarrow, pydantic, pyyaml, sqlalchemy, typer. The [registry] and [dashboard] extras add FastAPI, Uvicorn, and the database driver needed to host those services — you generally only install those on the machine actually running the registry/dashboard, not on every Airflow worker.

Extra	Adds	Use case
(none)	Core validation engine + CLI	Airflow workers, any pipeline that calls DataContractValidator
[registry]	FastAPI, Uvicorn, Alembic, psycopg2	Hosting the contract registry service
[dashboard]	FastAPI, Jinja2, Uvicorn	Hosting the observability dashboard
[all]	Both of the above	Local development, the Docker lab