diff --git a/src/common_swagger_api/schema/apps/communities.clj b/src/common_swagger_api/schema/apps/communities.clj
index 2692360..d99931a 100644
--- a/src/common_swagger_api/schema/apps/communities.clj
+++ b/src/common_swagger_api/schema/apps/communities.clj
@@ -1,4 +1,7 @@
-(ns common-swagger-api.schema.apps.communities)
+(ns common-swagger-api.schema.apps.communities
+  (:require [common-swagger-api.schema :refer [->optional-param describe NonBlankString]]
+            [common-swagger-api.schema.metadata :refer [AvuListRequest]]
+            [schema.core :as s]))
 
 (def AppCommunityMetadataAddSummary "Add/Update Community Metadata AVUs")
 (def AppCommunityMetadataAddDocs
@@ -11,3 +14,28 @@
   "Removes the given Community AVUs associated with an app.
    The authenticated user must be a community admin for every Community AVU in the request,
    in order to remove those AVUs.")
+
+(def AppCommunityAddSummary "Add an App to Communities")
+(def AppCommunityAddDocs
+  "Adds the app to each of the given communities.
+   The authenticated user must be an admin of every community in the request.
+   The stored tag format belongs to the service, so a caller identifies a community
+   by its ID rather than composing the value itself.")
+
+(def AppCommunityDeleteSummary "Remove an App from a Community")
+(def AppCommunityDeleteDocs
+  "Removes the app from the given community.
+   The authenticated user must be an admin of that community.")
+
+(def CommunityIdPathParam (describe NonBlankString "The community's identifier."))
+
+;; Both keys are optional so that one route can serve the current request shape
+;; and the AVU list a browser holding a stale bundle still sends. Exactly one is
+;; required, which the service enforces -- expressing "one or the other" here
+;; would render as an unhelpful union in the generated documentation.
+(s/defschema AppCommunityListRequest
+  (-> AvuListRequest
+      (->optional-param :avus)
+      (assoc (s/optional-key :community_ids)
+             (describe [NonBlankString] "The identifiers of the communities."))
+      (describe "The communities to add the app to, or remove it from.")))