diff --git a/app.py b/app.py
index 343ae0b..3e23cd2 100644
--- a/app.py
+++ b/app.py
@@ -60,13 +60,16 @@ def list_dimensions():
 @app.route("/search")
 def search():
     log.debug("search: %s", request.args)
+    return jsonify(_search())
+
+def _search():
     timeseries = None
     with open("data/.index") as fh:
         fcntl.flock(fh, fcntl.LOCK_SH)
         index = json.load(fh)
     for k, v in request.args.lists():
         log.debug("search: %s -> %s", k, v)
-        if timeseries == None:
+        if timeseries is None:
             timeseries = set()
             log.debug("search: %s: %s", k, index[k])
             for m in v:
@@ -77,8 +80,7 @@ def search():
                 filter |= set(index[k][m])
             timeseries &= filter
     results = list(timeseries)
-    return jsonify(results)
-
+    return results
 
 def verify_node(d):
     node = d["auth"]["node"]
@@ -112,6 +114,9 @@ def verify_node(d):
 @app.get("/v")
 def visualize():
     timeseries_ids = request.args.getlist("ts")
+    if not timeseries_ids:
+        timeseries_ids = _search()
+    log.debug("timeseries_ids = %s", timeseries_ids)
     timeseries_data = []
     for id in timeseries_ids:
         ts = LTS(id=id)