diff --git a/src/devx/ci/validate_spec.py b/src/devx/ci/validate_spec.py
index 96acaaa..0f73da1 100644
--- a/src/devx/ci/validate_spec.py
+++ b/src/devx/ci/validate_spec.py
@@ -3,6 +3,7 @@
 """Validate that a PR has a spec file with required sections and acceptance criteria.
 
 Spec-driven development gate. Runs in CI before expensive jobs.
+Used by grm, infra, sso-bridge, and devx itself.
 
 Validates:
 1. A spec file exists at ``docs/specs/<TASK-ID>.md`` (TASK-ID extracted from branch).