diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..108a8a6
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,11 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.json]
+indent_size = 2
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 7fe91f8..5794a88 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -35,7 +35,7 @@ jobs:
           chmod u+x /usr/local/bin/taplo
 
       - name: Validate party series TOML file
-        run: taplo lint data/series.toml && taplo format --check data/series.toml
+        run: taplo lint --schema "file://"$PWD"/schemas/series.json" data/series.toml && taplo format --check data/series.toml
 
       - name: Validate party TOML files
         run: |
diff --git a/schemas/series.json b/schemas/series.json
new file mode 100644
index 0000000..7faa567
--- /dev/null
+++ b/schemas/series.json
@@ -0,0 +1,29 @@
+{
+  "title": "LAN party series",
+  "type": "object",
+  "properties": {
+    "series": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "slug": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "alternative_names": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            },
+            "minItems": 1,
+            "uniqueItems": true
+          }
+        },
+        "required": ["slug", "name"]
+      }
+    }
+  }
+}