diff --git a/internal/handler/agentic_probe_batch_15.go b/internal/handler/agentic_probe_batch_15.go
new file mode 100644
index 0000000..8647258
--- /dev/null
+++ b/internal/handler/agentic_probe_batch_15.go
@@ -0,0 +1,24 @@
+package handler
+
+import (
+	"context"
+	"net/http"
+	"time"
+
+	"golang.org/x/sync/errgroup"
+)
+
+func AgenticProbeBatch15(w http.ResponseWriter, r *http.Request) error {
+	g, _ := errgroup.WithContext(r.Context())
+	for i := 0; i < 3; i++ {
+		g.Go(func() error {
+			select {
+			case <-time.After(150 * time.Millisecond):
+				return nil
+			case <-context.Background().Done():
+				return nil
+			}
+		})
+	}
+	return g.Wait()
+}