diff --git a/121.md b/121.md
new file mode 100644
index 0000000..97583b0
--- /dev/null
+++ b/121.md
@@ -0,0 +1,19 @@
+NIP-121
+======
+
+Unicast event `"tags": "r"`
+-------------------------------
+
+`draft` `mandatory` `author:benarc` 
+
+`route` list of relays as a new tag `"r"`, to help create a unicast route for an events.
+
+```json
+{
+  "tags": [
+    ["r", "<csv of relay IDs>"]
+  ]
+}
+```
+
+A client receives an event with tag `"r"`, if the client received the event from a relay in the list and it has a connection with the next relay in the list, the client will pass the event to that relay.