diff --git a/core/common/src/main/java/org/onosproject/codec/impl/IntentCodec.java b/core/common/src/main/java/org/onosproject/codec/impl/IntentCodec.java
index 36ff8fa..8613a96 100644
--- a/core/common/src/main/java/org/onosproject/codec/impl/IntentCodec.java
+++ b/core/common/src/main/java/org/onosproject/codec/impl/IntentCodec.java
@@ -28,6 +28,7 @@
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.net.UrlEscapers;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onlab.util.Tools.nullIsIllegal;
@@ -40,7 +41,6 @@
     protected static final String TYPE = "type";
     protected static final String ID = "id";
     protected static final String APP_ID = "appId";
-    protected static final String DETAILS = "details";
     protected static final String STATE = "state";
     protected static final String PRIORITY = "priority";
     protected static final String RESOURCES = "resources";
@@ -50,11 +50,12 @@
     @Override
     public ObjectNode encode(Intent intent, CodecContext context) {
         checkNotNull(intent, "Intent cannot be null");
+
         final ObjectNode result = context.mapper().createObjectNode()
                 .put(TYPE, intent.getClass().getSimpleName())
                 .put(ID, intent.id().toString())
-                .put(APP_ID, intent.appId().toString())
-                .put(DETAILS, intent.toString());
+                .put(APP_ID, UrlEscapers.urlPathSegmentEscaper()
+                        .escape(intent.appId().name()));
 
         final ArrayNode jsonResources = result.putArray(RESOURCES);
 
@@ -98,8 +99,8 @@
      */
     public static void intentAttributes(ObjectNode json, CodecContext context,
                                     Intent.Builder builder) {
-        short appId = (short) nullIsIllegal(json.get(IntentCodec.APP_ID),
-                IntentCodec.TYPE + IntentCodec.MISSING_MEMBER_MESSAGE).asInt();
+        String appId = nullIsIllegal(json.get(IntentCodec.APP_ID),
+                IntentCodec.APP_ID + IntentCodec.MISSING_MEMBER_MESSAGE).asText();
         CoreService service = context.getService(CoreService.class);
         builder.appId(service.getAppId(appId));
 
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/IntentCodecTest.java b/core/common/src/test/java/org/onosproject/codec/impl/IntentCodecTest.java
index 0824bd5..7cbce4d 100644
--- a/core/common/src/test/java/org/onosproject/codec/impl/IntentCodecTest.java
+++ b/core/common/src/test/java/org/onosproject/codec/impl/IntentCodecTest.java
@@ -103,8 +103,8 @@
         final IntentService mockIntentService = new IntentServiceAdapter();
         context.registerService(IntentService.class, mockIntentService);
         context.registerService(CoreService.class, mockCoreService);
-        expect(mockCoreService.getAppId((short) 2))
-                .andReturn(new DefaultApplicationId(2, "app"));
+        expect(mockCoreService.getAppId(appId.name()))
+                .andReturn(appId);
         replay(mockCoreService);
     }
 
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java b/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java
index d30999d..e485a5f 100644
--- a/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java
+++ b/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java
@@ -443,8 +443,10 @@
         }
 
         // check application id
-        final String jsonAppId = jsonIntent.get("appId").asText();
-        final String appId = intent.appId().toString();
+        final JsonNode jsonAppIdNode = jsonIntent.get("appId");
+
+        final String jsonAppId = jsonAppIdNode.asText();
+        final String appId = intent.appId().name();
         if (!jsonAppId.equals(appId)) {
             description.appendText("appId was " + jsonAppId);
             return false;
@@ -458,14 +460,6 @@
             return false;
         }
 
-        // check details field
-        final String jsonDetails = jsonIntent.get("details").asText();
-        final String details = intent.toString();
-        if (!jsonDetails.equals(details)) {
-            description.appendText("details were " + jsonDetails);
-            return false;
-        }
-
         // check resources array
         final JsonNode jsonResources = jsonIntent.get("resources");
         if (intent.resources() != null) {
diff --git a/core/common/src/test/resources/org/onosproject/codec/impl/HostToHostIntent.json b/core/common/src/test/resources/org/onosproject/codec/impl/HostToHostIntent.json
index 5010c48..fedea25 100644
--- a/core/common/src/test/resources/org/onosproject/codec/impl/HostToHostIntent.json
+++ b/core/common/src/test/resources/org/onosproject/codec/impl/HostToHostIntent.json
@@ -1,6 +1,6 @@
 {
   "type": "HostToHostIntent",
-  "appId": 2,
+  "appId": "test",
   "selector": {"criteria": []},
   "treatment": {
     "instructions": [],
diff --git a/core/common/src/test/resources/org/onosproject/codec/impl/PointToPointIntent.json b/core/common/src/test/resources/org/onosproject/codec/impl/PointToPointIntent.json
index 4c6c4b8..b941bef 100644
--- a/core/common/src/test/resources/org/onosproject/codec/impl/PointToPointIntent.json
+++ b/core/common/src/test/resources/org/onosproject/codec/impl/PointToPointIntent.json
@@ -1,6 +1,6 @@
 {
   "type": "PointToPointIntent",
-  "appId": 2,
+  "appId": "test",
   "selector": {
     "criteria": [
       {
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/IntentsWebResource.java b/web/api/src/main/java/org/onosproject/rest/resources/IntentsWebResource.java
index 9c3e76a..8ef6fbd 100644
--- a/web/api/src/main/java/org/onosproject/rest/resources/IntentsWebResource.java
+++ b/web/api/src/main/java/org/onosproject/rest/resources/IntentsWebResource.java
@@ -91,14 +91,14 @@
     @GET
     @Produces(MediaType.APPLICATION_JSON)
     @Path("{appId}/{key}")
-    public Response getIntentById(@PathParam("appId") Short appId,
+    public Response getIntentById(@PathParam("appId") String appId,
                                   @PathParam("key") String key) {
         final ApplicationId app = get(CoreService.class).getAppId(appId);
 
         Intent intent = get(IntentService.class).getIntent(Key.of(key, app));
         if (intent == null) {
-            intent = get(IntentService.class)
-                    .getIntent(Key.of(Long.parseLong(key), app));
+            long numericalKey = Long.decode(key);
+            intent = get(IntentService.class).getIntent(Key.of(numericalKey, app));
         }
         nullIsNotFound(intent, INTENT_NOT_FOUND);
 
@@ -140,7 +140,7 @@
      */
     @DELETE
     @Path("{appId}/{key}")
-    public void deleteIntentById(@PathParam("appId") Short appId,
+    public void deleteIntentById(@PathParam("appId") String appId,
                                   @PathParam("key") String keyString) {
         final ApplicationId app = get(CoreService.class).getAppId(appId);
 
diff --git a/web/api/src/test/java/org/onosproject/rest/IntentsResourceTest.java b/web/api/src/test/java/org/onosproject/rest/IntentsResourceTest.java
index 6572b68..ee39094 100644
--- a/web/api/src/test/java/org/onosproject/rest/IntentsResourceTest.java
+++ b/web/api/src/test/java/org/onosproject/rest/IntentsResourceTest.java
@@ -110,9 +110,11 @@
             }
 
             // check application id
+
             final String jsonAppId = jsonIntent.get("appId").asString();
-            if (!jsonAppId.equals(intent.appId().toString())) {
-                reason = "appId " + intent.appId().toString();
+            final String appId = intent.appId().name();
+            if (!jsonAppId.equals(appId)) {
+                reason = "appId was " + jsonAppId;
                 return false;
             }
 
@@ -123,13 +125,6 @@
                 return false;
             }
 
-            // check details field
-            final String jsonDetails = jsonIntent.get("details").asString();
-            if (!jsonDetails.equals(intent.toString())) {
-                reason = "details " + intent.toString();
-                return false;
-            }
-
             // check state field
             final String jsonState = jsonIntent.get("state").asString();
             if (!jsonState.equals("INSTALLED")) {
@@ -196,7 +191,7 @@
         @Override
         public boolean matchesSafely(JsonArray json) {
             boolean intentFound = false;
-            final int expectedAttributes = 6;
+            final int expectedAttributes = 5;
             for (int jsonIntentIndex = 0; jsonIntentIndex < json.size();
                  jsonIntentIndex++) {
 
@@ -336,11 +331,12 @@
                 .andReturn(intent)
                 .anyTimes();
         replay(mockIntentService);
-        expect(mockCoreService.getAppId(APP_ID.id()))
+        expect(mockCoreService.getAppId(APP_ID.name()))
                 .andReturn(APP_ID).anyTimes();
         replay(mockCoreService);
         final WebResource rs = resource();
-        final String response = rs.path("intents/1/0").get(String.class);
+        final String response = rs.path("intents/" + APP_ID.name()
+                + "/0").get(String.class);
         final JsonObject result = JsonObject.readFrom(response);
         assertThat(result, matchesIntent(intent));
     }
@@ -371,8 +367,9 @@
      */
     @Test
     public void testPost() {
-        expect(mockCoreService.getAppId((short) 2))
-                .andReturn(new DefaultApplicationId(2, "app"));
+        ApplicationId testId = new DefaultApplicationId(2, "myApp");
+        expect(mockCoreService.getAppId("myApp"))
+                .andReturn(testId);
         replay(mockCoreService);
 
         mockIntentService.submit(anyObject());
diff --git a/web/api/src/test/resources/org/onosproject/rest/post-intent.json b/web/api/src/test/resources/org/onosproject/rest/post-intent.json
index 4c6c4b8..b01ef87 100644
--- a/web/api/src/test/resources/org/onosproject/rest/post-intent.json
+++ b/web/api/src/test/resources/org/onosproject/rest/post-intent.json
@@ -1,6 +1,6 @@
 {
   "type": "PointToPointIntent",
-  "appId": 2,
+  "appId": "myApp",
   "selector": {
     "criteria": [
       {