diff --git a/data.schema.json b/data.schema.json
new file mode 100644
index 0000000..032daf3
--- /dev/null
+++ b/data.schema.json
@@ -0,0 +1,41 @@
+{
+  "$schema": "http://json-schema.org/draft-06/schema#",
+  "description": "Collected data.",
+  "type": "object",
+  "properties": {
+    "utcTimestamp": {
+      "type": "integer"
+    },
+    "latitude": {
+      "type": "number"
+    },
+    "longitude": {
+      "type": "number"
+    },
+    "elevation": {
+      "type": "integer"
+    },
+    "heart_rate": {
+      "type": "integer"
+    },
+    "speed": {
+      "type": "integer"
+    },
+    "cadence": {
+      "type": "integer"
+    },
+    "temperature": {
+      "type": "integer"
+    },
+    "power": {
+      "type": "integer"
+    },
+    "power_estimate": {
+      "type": "integer"
+    },
+    "respiration_rate": {
+      "type": "integer"
+    }
+  },
+  "required": ["utcTimestamp"]
+}