From 1c1f808cb25c53e39eae5143c9b8a3272885c4ec Mon Sep 17 00:00:00 2001
From: Vincent Biret <vincentbiret@hotmail.com>
Date: Thu, 2 Jul 2026 13:51:22 -0400
Subject: [PATCH 1/2] docs: add x-jsonschema-maxContains extension page

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 .../_extension/x-jsonschema-maxContains.md    | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 registries/_extension/x-jsonschema-maxContains.md

diff --git a/registries/_extension/x-jsonschema-maxContains.md b/registries/_extension/x-jsonschema-maxContains.md
new file mode 100644
index 0000000..0715d9a
--- /dev/null
+++ b/registries/_extension/x-jsonschema-maxContains.md
@@ -0,0 +1,43 @@
+---
+owner: mikekistler
+issue:
+description: The maximum number of array elements that may match contains, used when targeting OpenAPI versions that do not directly support maxContains.
+schema:
+  type: integer
+  minimum: 0
+objects: [ "Schema Object" ]
+layout: default
+---
+
+{% capture summary %}
+JSON Schema defines the `maxContains` keyword to set the maximum number of array elements that may match `contains`.
+
+The `x-jsonschema-maxContains` extension mirrors this JSON Schema keyword when targeting OpenAPI versions where the keyword is not directly available, serializing it as `x-jsonschema-maxContains`.
+
+It can appear as a property in the following objects: `{{page.objects|jsonify}}`.
+
+Used by: (informational)
+
+* [Microsoft.OpenApi](https://github.com/microsoft/OpenAPI.NET) (.NET OpenAPI library)
+{% endcapture %}
+
+{% capture example %}
+```yaml
+openapi: 3.0.4
+info:
+  title: My API
+  version: 1.0.0
+paths: {}
+components:
+  schemas:
+    Roles:
+      type: array
+      items:
+        type: string
+      x-jsonschema-contains:
+        const: admin
+      x-jsonschema-maxContains: 1
+```
+{% endcapture %}
+
+{% include extension-entry.md summary=summary example=example %}

From 9056b6214c949a59970204e809f0892062dcbc43 Mon Sep 17 00:00:00 2001
From: Vincent Biret <vincentbiret@hotmail.com>
Date: Thu, 2 Jul 2026 13:55:43 -0400
Subject: [PATCH 2/2] docs: update owner for x-jsonschema-maxContains extension
 page

---
 registries/_extension/x-jsonschema-maxContains.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/registries/_extension/x-jsonschema-maxContains.md b/registries/_extension/x-jsonschema-maxContains.md
index 0715d9a..257e8a9 100644
--- a/registries/_extension/x-jsonschema-maxContains.md
+++ b/registries/_extension/x-jsonschema-maxContains.md
@@ -1,5 +1,5 @@
 ---
-owner: mikekistler
+owner: baywet
 issue:
 description: The maximum number of array elements that may match contains, used when targeting OpenAPI versions that do not directly support maxContains.
 schema: