diff --git a/README.md b/README.md
index d1efe633f37eef535c4d0068db6a2b77e32a3192..6f3a7d43e0bb4b13c56a9a7722e3ea342b010740 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,12 @@
-This plugin will add 'Sent-At' header with timestamp in perf_counter format to request headers.
+This plugin will:
+
+1. Replace generic id of the request with unique one generated using uuid4.
+2. Store request start time in csv file with path given in HIVEMIND_BENCHMARKS_IDS_FILE env variable.
+
+Storage format:
+```
+request_uuid,resuest_start_time
+```
+
+This file will be read by benchmarking system to evaluate request/response time.
+