diff --git a/docs/runbooks/validate-compose-e2e.md b/docs/runbooks/validate-compose-e2e.md
index 0177a4b..e1363e9 100644
--- a/docs/runbooks/validate-compose-e2e.md
+++ b/docs/runbooks/validate-compose-e2e.md
@@ -82,6 +82,22 @@ Uses `e2e/docker-compose.smoke.yml` (nginx on `127.0.0.1:18080`).
 
 | Legacy | Replacement |
 |--------|-------------|
-| `make e2e REPO=` | `validate run ~/REPO` (SAND-WP-0004 shim pending) |
-| `python -m e2e_framework` | `validate run` |
-| Embedded SSH provision | `sandboxer create` (sand-boxer) |
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+| `make e2e REPO=` | Still works — delegates to `validate run` (SAND-WP-0004) |
+| `python -m e2e_framework` | Deprecated wrapper → `validate run` |
+| Embedded SSH provision | `sandboxer create` (sand-boxer) |
+
+## activity-core scheduling
+
+Instructions and cron jobs should invoke:
+
+```bash
+validate run /path/to/repo --host "${SANDBOXER_HOST}" --no-report
+```
+
+or, from a the-custodian checkout:
+
+```bash
+make e2e REPO=<slug>
+```
+
+Set `SANDBOXER_HOST` and `SANDBOXER_COMPOSE_CMD` in the instruction environment.
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