diff --git a/lexicons/site/exosphere/featureRequestPermissions.json b/lexicons/site/exosphere/featureRequestPermissions.json
new file mode 100644
index 0000000..99b770e
--- /dev/null
+++ b/lexicons/site/exosphere/featureRequestPermissions.json
@@ -0,0 +1,51 @@
+{
+  "lexicon": 1,
+  "id": "site.exosphere.featureRequestPermissions",
+  "defs": {
+    "role": {
+      "type": "string",
+      "description": "Minimum role required to perform an action.",
+      "knownValues": ["owner", "admin", "member", "authenticated"]
+    },
+    "main": {
+      "type": "record",
+      "description": "Permission overrides for the feature-requests module of an Exosphere Sphere. Published on the Sphere owner's PDS. Only non-default roles need to be specified — absent keys use the module's built-in defaults.",
+      "key": "literal:self",
+      "record": {
+        "type": "object",
+        "properties": {
+          "create": {
+            "type": "ref",
+            "ref": "#role",
+            "description": "Minimum role to create feature requests."
+          },
+          "vote": {
+            "type": "ref",
+            "ref": "#role",
+            "description": "Minimum role to vote on feature requests."
+          },
+          "comment": {
+            "type": "ref",
+            "ref": "#role",
+            "description": "Minimum role to comment on feature requests."
+          },
+          "change-status": {
+            "type": "ref",
+            "ref": "#role",
+            "description": "Minimum role to change feature request status."
+          },
+          "mark-duplicate": {
+            "type": "ref",
+            "ref": "#role",
+            "description": "Minimum role to mark feature requests as duplicate."
+          },
+          "moderate": {
+            "type": "ref",
+            "ref": "#role",
+            "description": "Minimum role to hide/unhide content."
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/site/exosphere/sphere.json b/lexicons/site/exosphere/sphere.json
index b264e5e..2730961 100644
--- a/lexicons/site/exosphere/sphere.json
+++ b/lexicons/site/exosphere/sphere.json
@@ -11,7 +11,6 @@
         "required": [
           "name",
           "visibility",
-          "writeAccess",
           "createdAt"
         ],
         "properties": {
@@ -33,14 +32,6 @@
               "private"
             ]
           },
-          "writeAccess": {
-            "type": "string",
-            "description": "Who can create content in this Sphere.",
-            "knownValues": [
-              "open",
-              "members"
-            ]
-          },
           "modules": {
             "type": "array",
             "description": "Module names enabled for this Sphere.",