---
title: Injecting your own treatment hypotheses
review-state: drafting
last-human-review: "2026-06-11"
depends-on:
  - src/pytyche/experiment/cells.py
owner: tradcliffe
quadrant: tutorial
---

# Injecting your own treatment hypotheses

:::{admonition} Placeholder — not yet written
:class: note

The full walkthrough is coming in a future release.
:::

This tutorial will show how to run your own hypothesis cells alongside
the recommendation engine's cells in a sequential experiment: building
custom `Cell` and `Policy` objects, weighting them against the engine's
allocation, and reading their results out of the round-by-round
analysis. In the meantime, the
[first adaptive experiment](first-adaptive-experiment.md) tutorial
covers the canonical end-to-end loop with the engine's default cells.