diff --git a/Taskfile.yml b/Taskfile.yml
index 31ba9b7..f30744a 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -21,6 +21,7 @@ tasks:
             - transerialize {{.SCHEMA}} {{.TRANSFORM}} {{.DEST}}
 
     validate:
+        deps: [ schemas ]
         silent: true
         cmds:
             - |
@@ -28,6 +29,7 @@ tasks:
                     --all-errors \
                     --errors=json \
                     --verbose \
+                    --data \
                     -c ajv-keywords \
                     -r schemas-json/classes.json \
                     -s schemas-json/character.json \
diff --git a/samples/verg.yml b/samples/verg.yml
index 1000903..2277afd 100644
--- a/samples/verg.yml
+++ b/samples/verg.yml
@@ -1,8 +1,12 @@
 name: Verg-La
 player: Yanick
+level: 4
 class:
   generic: magician
   subclass: cryomancer
+health:
+  max: 13
+  log: [ 4, 3, 2, 4 ]
 statistics:
     strength: 11
     dexterity: 13
diff --git a/schemas-json/character.json b/schemas-json/character.json
index f4d0d1a..704ef04 100644
--- a/schemas-json/character.json
+++ b/schemas-json/character.json
@@ -1,5 +1,32 @@
 {
    "$defs" : {
+      "health" : {
+         "properties" : {
+            "current" : {
+               "type" : "number"
+            },
+            "log" : {
+               "description" : "history of health rolls",
+               "items" : {
+                  "type" : "number"
+               },
+               "maxItems" : {
+                  "$data" : "/level"
+               },
+               "minItems" : {
+                  "$data" : "/level"
+               },
+               "type" : "array"
+            },
+            "max" : {
+               "type" : "number"
+            }
+         },
+         "required" : [
+            "max"
+         ],
+         "type" : "object"
+      },
       "statistic" : {
          "maximum" : 20,
          "minimum" : 1,
@@ -12,6 +39,13 @@
       "class" : {
          "$ref" : "/classes.json"
       },
+      "health" : {
+         "$ref" : "#/$defs/health"
+      },
+      "level" : {
+         "minimum" : 1,
+         "type" : "number"
+      },
       "name" : {
          "type" : "string"
       },
@@ -47,7 +81,9 @@
       "name",
       "player",
       "statistics",
-      "class"
+      "class",
+      "level",
+      "health"
    ],
    "title" : "Hyperboria character sheet",
    "type" : "object"
diff --git a/schemas-yaml/character.yml b/schemas-yaml/character.yml
index e0b0957..3abe8ed 100644
--- a/schemas-yaml/character.yml
+++ b/schemas-yaml/character.yml
@@ -7,6 +7,8 @@ required:
     - player
     - statistics
     - class
+    - level
+    - health
 properties:
     name: &string
         type: string
@@ -23,9 +25,23 @@ properties:
         intelligence: *stat
         wisdom: *stat
         charisma: *stat
+    level: { type: number, minimum: 1 }
+    health: { $ref: '#/$defs/health' }
 $defs:
   statistic:
     type: number
     minimum: 1
     maximum: 20
+  health:
+    type: object
+    required: [ max ]
+    properties:
+        max: { type: number }
+        current: { type: number }
+        log:
+            type: array
+            description: history of health rolls
+            items: { type: number }
+            minItems: { $data: /level }
+            maxItems: { $data: /level }