diff --git a/.druks/house_rules/config.yml b/.druks/house_rules/config.yml
new file mode 100644
index 0000000..2da4e98
--- /dev/null
+++ b/.druks/house_rules/config.yml
@@ -0,0 +1,10 @@
+rules: [R14, R28, R27, rule-3, rule-2, rule-1, R21, R23, R5, R25, R39]
+
+exclude: [uv.lock, api-tests/package-lock.json, alembic/versions/**]
+
+R21:
+  modules: [fastapi, sqlalchemy, pydantic]
+
+exceptions:
+  rule-3: [src/providers/*/api.py, src/core/settings.py]
+  R5: [src/diagnostics/*.py]
diff --git a/AGENTS.md b/AGENTS.md
index 9bf45b5..82cfc00 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -32,6 +32,10 @@ documented in this repo.
 - Read this file and the relevant source before changing behavior.
 - The checklist and craft gate every change is held to:
   `.druks/review/checklist.md`.
+- Before you push, run `druks-house-rules check --base origin/main`. Druks runs
+  the same check on every pull request with `.druks/house_rules/config.yml`.
+  Install it with
+  `uv tool install git+https://github.com/getdruks/druks-house-rules@v0.0.5`.
 - `docs/` holds the conceptual and operational docs. Update them when behavior
   they describe changes.
 - For Python code, tests, or tooling changes, follow the style and verification