diff --git a/src/main/ApiUtil.kt b/src/main/ApiUtil.kt
index aad9d51..6e06bc9 100644
--- a/src/main/ApiUtil.kt
+++ b/src/main/ApiUtil.kt
@@ -93,4 +93,16 @@ fun substationNames(network: Network): List<String> {
 
 fun voltageLevelNames(network: Network): List<String> {
     return network.voltageLevels.map { voltageLevel -> voltageLevel.nameOrId }.toList()
+}
+
+fun generatorNames(network: Network): List<String> {
+    return network.generators.map { generator -> generator.nameOrId }
+}
+
+fun loadNames(network: Network): List<String> {
+    return network.loads.map { load -> load.nameOrId }
+}
+
+fun branchNames(network: Network): List<String> {
+    return network.lines.map { line -> line.nameOrId }
 }
\ No newline at end of file
diff --git a/src/main/App.kt b/src/main/App.kt
index 7696bf5..c632d98 100644
--- a/src/main/App.kt
+++ b/src/main/App.kt
@@ -52,6 +52,36 @@ fun Application.module() {
             }
         }
 
+        post("/generator-names") {
+            val files = multiPartDataHandler(call.receiveMultipart())
+            if (files.isEmpty()) {
+                call.response.status(HttpStatusCode.UnprocessableEntity)
+            } else {
+                val network = networkFromFileContent(files[0])
+                call.respond(generatorNames(network))
+            }
+        }
+
+        post("/load-names") {
+            val files = multiPartDataHandler(call.receiveMultipart())
+            if (files.isEmpty()) {
+                call.response.status(HttpStatusCode.UnprocessableEntity)
+            } else {
+                val network = networkFromFileContent(files[0])
+                call.respond(loadNames(network))
+            }
+        }
+
+        post("/branch-names") {
+            val files = multiPartDataHandler(call.receiveMultipart())
+            if (files.isEmpty()) {
+                call.response.status(HttpStatusCode.UnprocessableEntity)
+            } else {
+                val network = networkFromFileContent(files[0])
+                call.respond(branchNames(network))
+            }
+        }
+
         get("/default-load-parameters") {
             call.respondText(defaultLoadFlowParameters(), ContentType.Application.Json, HttpStatusCode.OK)
         }
diff --git a/src/test/AppTest.kt b/src/test/AppTest.kt
index 78ffc26..c2bec4a 100644
--- a/src/test/AppTest.kt
+++ b/src/test/AppTest.kt
@@ -48,7 +48,10 @@ class ApplicationTest {
         "/voltage-level-names",
         "/diagram",
         "/diagram/substation/S1",
-        "/diagram/voltage-level/VL1"
+        "/diagram/voltage-level/VL1",
+        "/generator-names",
+        "/branch-names",
+        "/load-names"
     ).map { url ->
         DynamicTest.dynamicTest("422 when no network is passed to $url") {
             testApplication {
@@ -66,7 +69,10 @@ class ApplicationTest {
         "/voltage-level-names",
         "/diagram",
         "/diagram/substation/S1",
-        "/diagram/voltage-level/VL1"
+        "/diagram/voltage-level/VL1",
+        "/generator-names",
+        "/branch-names",
+        "/load-names"
     ).map { url ->
         DynamicTest.dynamicTest("500 when file content can not be parsed $url") {
             testApplication {
@@ -295,6 +301,29 @@ class ApplicationTest {
             }
         }
     }
+
+    @TestFactory
+    fun `test response 200 and that known substring is part of the body`() = listOf(
+        mapOf("url" to "/generator-names", "content-substring" to "B1-G"),
+        mapOf("url" to "/load-names", "content-substring" to "B2-L"),
+        mapOf("url" to "/branch-names", "content-substring" to "L7-8-1")
+    ).map { args ->
+        DynamicTest.dynamicTest("Test ${args["url"]}") {
+            testApplication {
+                val response = client.submitFormWithBinaryData(
+                    url = args["url"]!!,
+                    formData = sensitivityFormData.network
+                )
+
+                assertEquals(HttpStatusCode.OK, response.status)
+                val body = response.bodyAsText()
+                assertTrue(body.contains(args["content-substring"]!!))
+                assertEquals("application/json; charset=UTF-8", response.headers["content-type"])
+            }
+        }
+    }
+
+
 }