diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 2b844ba..edac98c 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -12,11 +12,8 @@ on:
 
 jobs:
   claude-review:
-    # Optional: Filter by PR author
-    # if: |
-    #   github.event.pull_request.user.login == 'external-contributor' ||
-    #   github.event.pull_request.user.login == 'new-developer' ||
-    #   github.event.pull_request.author_association == 'FIRST_TIME_CONTRIBUTOR'
+    # Skip fork PRs (no OIDC/secrets access). Use @claude mention for fork PR reviews.
+    if: github.event.pull_request.head.repo.full_name == github.repository
 
     runs-on: ubuntu-latest
     permissions: