diff --git a/README.md b/README.md
index 57c0d27..87919af 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,8 @@ The server is available at
 - API <http://127.0.0.1:5001>
 - API documentation <http://127.0.0.1:5001/docs>
 - UI playground <http://127.0.0.1:5001/ui>
-  ![swagger.png](img/swagger.png)
+
+![API documentation](img/fastapi-ui.png)
 
 Try it out with a simple conversion:
 
@@ -46,7 +47,7 @@ curl -X 'POST' \
   -H 'accept: application/json' \
   -H 'Content-Type: application/json' \
   -d '{
-    "http_sources": [{"url": "https://arxiv.org/pdf/2501.17887"}]
+    "sources": [{"kind": "http", "url": "https://arxiv.org/pdf/2501.17887"}]
   }'
 ```
 
diff --git a/img/fastapi-ui.png b/img/fastapi-ui.png
new file mode 100644
index 0000000..0fa6dc8
Binary files /dev/null and b/img/fastapi-ui.png differ
diff --git a/img/swagger.png b/img/swagger.png
deleted file mode 100644
index 8760188..0000000
Binary files a/img/swagger.png and /dev/null differ