diff --git a/projects/rccl/tools/ci/lib/gin.sbatch b/projects/rccl/tools/ci/lib/gin.sbatch
index 94f2e31a57e1..679a9586df8f 100755
--- a/projects/rccl/tools/ci/lib/gin.sbatch
+++ b/projects/rccl/tools/ci/lib/gin.sbatch
@@ -21,6 +21,7 @@
 #      (GIN_ANVIL_UNIT_TESTS=ON) -> rccl.env
 #   5. projects/rccl-tests        build rccl-tests (DEVICE_API + ROCSHMEM)
 #   6. rccl-UnitTestsGinAnvilSdmaFactory  SDMA factory gtest (single-node)
+#   6b. rccl-UnitTestsGinAnvilPlugin      Anvil host plugin gtest (single-node)
 #   7. run-gin-ci.sh              run the GIN/rocSHMEM tests (non-gating)
 #
 # Required env (from the workflow via `sbatch --export=ALL,...`):
@@ -332,6 +333,34 @@ else
   echo "  SKIP: ${sdma_factory_test} not found (BUILD_TESTS may be off)"
 fi
 
+# --- unit test: Anvil host plugin gtest (already built in step 4). ---
+# Covers the bind-signals and conn-check cases in the Anvil host plugin gtest.
+# Step 4 exits if this binary is missing, so there is no skip path here.
+# Wall-clock cap matches fixtures in run-gin-ci.sh so a hang cannot burn the
+# 4h sbatch budget before the tests-failed sentinel is written.
+echo "==> [6b/7] run Anvil plugin unit tests"
+anvil_plugin_test="${RCCL_FIXTURES_BIN_DIR}/rccl-UnitTestsGinAnvilPlugin"
+BENCH_TIMEOUT="${BENCH_TIMEOUT:-600s}"
+BENCH_KILL_AFTER="${BENCH_KILL_AFTER:-30s}"
+_sysdeps_lib=""
+for _sp in "${ROCM_PATH}/lib/rocm_sysdeps/lib" "${ROCM_PATH}/core/lib/rocm_sysdeps/lib"; do
+  [[ -d "${_sp}" ]] && _sysdeps_lib="${_sp}"
+done
+export LD_LIBRARY_PATH="${RCCL_INSTALL_PREFIX}/lib:${ROCSHMEM_INSTALL_DIR}/lib:${ROCM_PATH}/lib${_sysdeps_lib:+:${_sysdeps_lib}}:${LD_LIBRARY_PATH:-}"
+anvil_plugin_rc=0
+timeout --kill-after="${BENCH_KILL_AFTER}" "${BENCH_TIMEOUT}" \
+  "${anvil_plugin_test}" --gtest_output="xml:${logs_dir}/anvil-plugin-test.xml" \
+  || anvil_plugin_rc=$?
+anvil_plugin_fail=""
+if [[ "${anvil_plugin_rc}" -ne 0 ]]; then
+  if [[ "${anvil_plugin_rc}" -eq 124 || "${anvil_plugin_rc}" -eq 137 ]]; then
+    anvil_plugin_fail="rccl-UnitTestsGinAnvilPlugin (TIMEOUT >${BENCH_TIMEOUT}, rc=${anvil_plugin_rc})"
+  else
+    anvil_plugin_fail="rccl-UnitTestsGinAnvilPlugin (rc=${anvil_plugin_rc})"
+  fi
+  echo "WARNING: Anvil plugin unit tests failed (non-gating): ${anvil_plugin_fail}" >&2
+fi
+
 # --- test phase -> test-%j.{out,err}. Don't fail the sbatch on test failures
 # (that would look like a build/infra failure); drop a `tests-failed` sentinel
 # instead, which the workflow turns into a red (non-gating for gin) result. ---
@@ -349,3 +378,13 @@ if [[ "${test_rc}" -ne 0 ]]; then
   [[ -s "${logs_dir}/tests-failed" ]] \
     || echo "GIN tests failed (rc=${test_rc}); see the test log group." > "${logs_dir}/tests-failed"
 fi
+# Step 6b runs before this redirect, so its failure is not in test-%j.out.
+# Append it after step 7's summary, which would otherwise replace the file.
+if [[ -n "${anvil_plugin_fail}" ]]; then
+  if [[ -s "${logs_dir}/tests-failed" ]]; then
+    printf '  %s\n' "${anvil_plugin_fail}" >> "${logs_dir}/tests-failed"
+  else
+    printf '=== FAILED / SKIPPED RUNS ===\n  %s\n' "${anvil_plugin_fail}" \
+      > "${logs_dir}/tests-failed"
+  fi
+fi