diff --git a/rust/personhog-router/AGENTS.md b/rust/personhog-router/AGENTS.md
index af467eaf511e..050d79dbcab1 100644
--- a/rust/personhog-router/AGENTS.md
+++ b/rust/personhog-router/AGENTS.md
@@ -3,5 +3,4 @@
 ## Test conventions
 
 - **Prefer parameterized tests.** When testing multiple variations of the same behavior, use a parameterized approach with `rstest` or a loop over test cases rather than writing separate test functions for each variation.
-- Mock traits live in `src/service/tests/mocks.rs`.
-- Integration tests go in `tests/`.
+- Integration tests go in `tests/`. Shared helpers live in `tests/common/mod.rs` — they start real in-process gRPC test servers (`TestReplicaService`, `TestLeaderService`), not mock traits.