diff --git a/matrix/schema.json b/matrix/schema.json
new file mode 100644
index 0000000..30d9e99
--- /dev/null
+++ b/matrix/schema.json
@@ -0,0 +1,32 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://squeebot.lunasqu.ee/pkg/service-matrix/matrix.schema.json",
+  "title": "matrix",
+  "description": "Matrix Service configuration",
+  "type": "object",
+  "properties": {
+    "instances": {
+      "type": "array",
+      "description": "List of all registered protocols",
+      "items": {
+        "type": "object",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Protocol's descriptive name"
+          },
+          "homeserver": {
+            "type": "string",
+            "description": "Matrix homeserver URL"
+          },
+          "token": {
+            "type": "string",
+            "description": "Matrix access token"
+          }
+        },
+        "required": ["name", "token", "homeserver"]
+      }
+    }
+  },
+  "required": ["instances"]
+}