diff --git a/seats/node-engine/seat.json b/seats/node-engine/seat.json
index 63159fe..af5875e 100644
--- a/seats/node-engine/seat.json
+++ b/seats/node-engine/seat.json
@@ -35,7 +35,8 @@
       },
       "answer": {
         "$ref": "#/defs/Asked"
-      }
+      },
+      "class": "warrant"
     },
     {
       "name": "access-act",
@@ -63,7 +64,8 @@
       },
       "answer": {
         "$ref": "#/defs/Asked"
-      }
+      },
+      "class": "warrant"
     },
     {
       "name": "judge-directories",
@@ -74,7 +76,8 @@
       },
       "answer": {
         "$ref": "#/defs/Said"
-      }
+      },
+      "class": "read"
     },
     {
       "name": "setuid-search",
@@ -90,7 +93,8 @@
       },
       "answer": {
         "$ref": "#/defs/Said"
-      }
+      },
+      "class": "read"
     },
     {
       "name": "root-free",
@@ -113,7 +117,8 @@
         "required": [
           "machines"
         ]
-      }
+      },
+      "class": "read"
     },
     {
       "name": "acts",
@@ -133,7 +138,8 @@
       },
       "answer": {
         "$ref": "#/defs/Acts"
-      }
+      },
+      "class": "read"
     },
     {
       "name": "packages",
@@ -223,7 +229,8 @@
           "node",
           "source"
         ]
-      }
+      },
+      "class": "read"
     },
     {
       "name": "composition",
@@ -497,7 +504,8 @@
           "composition",
           "judged"
         ]
-      }
+      },
+      "class": "read"
     },
     {
       "name": "compose",
@@ -560,7 +568,8 @@
         "required": [
           "pass"
         ]
-      }
+      },
+      "class": "act"
     },
     {
       "name": "compose-candidate",
@@ -639,7 +648,8 @@
           "own",
           "took"
         ]
-      }
+      },
+      "class": "read"
     },
     {
       "name": "manifest-reads",
@@ -679,7 +689,8 @@
           "stated-at"
         ],
         "description": "what this machine's engine reads of a manifest (ADR 0618 §3)"
-      }
+      },
+      "class": "read"
     },
     {
       "name": "seat-list",