diff --git a/API.md b/API.md
new file mode 100644
index 0000000..8df5cff
--- /dev/null
+++ b/API.md
@@ -0,0 +1,23 @@
+[domov](README.md)
+# API dokumentacia
+
+## Timer API
+
+### Write Time Endpoint
+
+**Endpoint:** `GET /api/timer/write/<str:timer_id>/<str:chip_id>/<str:time>/`
+
+**Description:** Tento endpoint sluzi na zapis casu do databazy. Zaeoven vytvori
+novy zaznam v tabulke `Lap` ak najde registraciu s danou kartou. Ak nieje ziadene ukopncene 
+kolo, tak vytovri nove a cas pouzije ako start. Ak najde neukoncene kolo, tak ho ukonci a
+zapisuje cas ako end.
+
+**Parameters:**
+- `timer_id` (string): identifikator casomiery, ktora odosiela request. (napr. 12345)
+- `chip_id` (string): id karty, ktora bola nacitana. (napr. 222-222-222-222)
+- `time` (string): cas v timestamp formate spolu s milisekundami. (napr. 1741169316.149847)
+
+**Example Request:**
+
+```bash
+curl -X GET "http://your-domain/api/timer/write/12345/222-222-222-222/1741169316.149847/"
\ No newline at end of file
diff --git a/README.md b/README.md
index e18f503..5197353 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,9 @@
 ## Description
 django app na secko
 
+## Timer API
+Otvorene api rozhranie s metodami pre citacky kariet. Viac info tu [Timer API](API.md)
+
 ## Run
 potrebujes `.env` file alebo exportnut vsetky potrebne virtual environments.
 Tie pouzije docker compose pri startovani kontainerov
diff --git a/src/kalskeborec/urls.py b/src/kalskeborec/urls.py
index 4b5d805..1fedaf1 100644
--- a/src/kalskeborec/urls.py
+++ b/src/kalskeborec/urls.py
@@ -26,5 +26,5 @@ urlpatterns = [
     path("", include("users.urls")),
     path("", include("core.urls")),
     path("events/", include("events.urls")),
-    path("timer/", include("timer.urls")),
+    path("api/timer/", include("timer.urls")),
 ] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT) + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)