diff --git a/app/controllers/nwbib/Application.java b/app/controllers/nwbib/Application.java
index c56dd0d..babd0c6 100644
--- a/app/controllers/nwbib/Application.java
+++ b/app/controllers/nwbib/Application.java
@@ -943,4 +943,12 @@ private static List<String> starredIds() {
 		return new ArrayList<>(Arrays.asList(currentlyStarred().split(" ")).stream()
 				.filter(s -> !s.trim().isEmpty()).collect(Collectors.toList()));
 	}
+
+	public static Result put(String id, String secret) {
+		JsonNode inputData = request().body().asJson();
+		System.out.println(id + ", will transform: " + inputData); // TODO run flux transformation
+		boolean willIndex = !secret.trim().isEmpty() && secret.equals(CONFIG.getString("secret"));
+		System.out.printf("Secret '%s', will index: %b\n", secret, willIndex);
+		return ok(Json.toJson("TODO: not implemented"));
+	}
 }
diff --git a/conf/nwbib.conf b/conf/nwbib.conf
index 114cd0c..23343b8 100644
--- a/conf/nwbib.conf
+++ b/conf/nwbib.conf
@@ -4,6 +4,7 @@ item.api="http://lobid.org/items"
 hbz01.api="http://lobid.org/hbz01"
 orgs.api="http://lobid.org/organisations"
 nwbib.filter="inCollection.id:\"http://lobid.org/resources/HT013494180#!\""
+secret=""
 
 # Embedded Elasticsearch index for classification data
 index {
diff --git a/conf/nwbib.routes b/conf/nwbib.routes
index ee232ad..b445db6 100644
--- a/conf/nwbib.routes
+++ b/conf/nwbib.routes
@@ -33,4 +33,5 @@ GET    /robots.txt            controllers.Assets.at(path="/public",file="robots.
 GET    /cgi-bin/wwwalleg/:name.pl   controllers.nwbib.Application.showPl(name, db ?= "rnam", index: Int ?= 1, zeilen: Int ?= 1, s1)
 GET    /sw/:rpbId             controllers.nwbib.Application.showSw(rpbId)
 GET    /o:id                  controllers.nwbib.Application.searchSpatial(id, from:Int?=0, size:Int?=25, format?="html")
-GET    /:id                   controllers.nwbib.Application.show(id, format ?= "")
\ No newline at end of file
+GET    /:id                   controllers.nwbib.Application.show(id, format ?= "")
+PUT    /:id                   controllers.nwbib.Application.put(id, secret ?= "")
\ No newline at end of file