Add requiredSchemas

Author: m-mohr

CHANGELOG.md

@@ -27,6 +27,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - ...
 
+## [v0.2.1] - 2025-10-09
+
+### Added
+
+- Added `requiredSchemas`
+
 ## [v0.2.0] - 2025-08-15
 
 ### Added

README.md

@@ -19,6 +19,7 @@ The following keywords are generally supported:
 At the top-level, you can also indicate the following special properties:
 
 - `$schema`: The schema identifier, see above.
+- `requiredSchemas`: Any other schema URLs that are required / inherited from.
 - `required`: The required properties (see `required` for objects below).
 - `properties`: The schemas for the properties (see `properties` for objects below).
 - `collection`: Specifies whether a property (specified as keys) must be provided only at the collection-level (`true`) or only at the feature-level (`false`). Omit any properties that can be provided at both levels.

schema/schema.json

@@ -8,6 +8,13 @@
       "type": "string",
       "const": "https://vecorel.org/sdl/v0.2.0/schema.json"
     },
+    "requiredSchemas": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "format": "uri"
+      }
+    },
     "required": {
       "type": "array",
       "items": {