diff --git a/curl.sh b/curl.sh
new file mode 100755
index 0000000..96ba536
--- /dev/null
+++ b/curl.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# Basic integration tests using curl...
+
+curl -s --header "Accept: application/json" --header "Content-Type: application/json" \
+  --request POST \
+  --data '{ "type":"INDIVIDUAL","name":"Mon Tournoi", "shortName": "mon-tournoi", "startDate": "2023-05-10", "endDate": "2023-05-12", "country": "FR", "location": "Marseille", "online": false, "timeSystem": { "type": "fischer", "mainTime": "1200", "increment": "10" }, "pairing": { "type": "ROUNDROBIN" }, "rounds": 5 }' \
+  http://localhost:8080/api/tour
+
+curl -s --header "Accept: application/json" http://localhost:8080/api/tour
+
+curl -s --header "Accept: application/json" http://localhost:8080/api/tour/1
+
+curl -s --header "Accept: application/json" --header "Content-Type: application/json" \
+  --request POST \
+  --data '{ "name": "Burma", "firstname": "Nestor", "rating": 1600, "rank": -2, "country": "FR", "club": "13Ma" }' \
+  http://localhost:8080/api/tour/1/part
+
+curl -s --header "Accept: application/json" http://localhost:8080/api/tour/1/part
+
+echo
+echo
+
+curl -s --header "Last-Event-Id: 0" http://localhost:8080/events
diff --git a/webapp/src/main/kotlin/org/jeudego/pairgoth/web/Event.kt b/webapp/src/main/kotlin/org/jeudego/pairgoth/web/Event.kt
index 9ead03f..2f46f56 100644
--- a/webapp/src/main/kotlin/org/jeudego/pairgoth/web/Event.kt
+++ b/webapp/src/main/kotlin/org/jeudego/pairgoth/web/Event.kt
@@ -1,6 +1,7 @@
 package org.jeudego.pairgoth.web
 
 import info.macias.sse.events.MessageEvent
+import java.util.concurrent.atomic.AtomicLong
 
 enum class Event {
     tournamentAdded,
@@ -15,8 +16,10 @@ enum class Event {
     ;
 
     companion object {
+        private val nextMessageId = AtomicLong(0)
         private val sse: SSEServlet by lazy { SSEServlet.getInstance() }
         private fun <T> buildEvent(event: Event, data: T) = MessageEvent.Builder()
+            .setId("${nextMessageId.incrementAndGet()}".padStart(10, '0'))
             .setEvent(event.name)
             .setData(data.toString())
             .build()