From 8fd6d2a7a1e977c9c5aac149f70841eefbfc2338 Mon Sep 17 00:00:00 2001
From: Antonio Aranda <102337110+arandito@users.noreply.github.com>
Date: Fri, 20 Mar 2026 14:31:40 -0400
Subject: [PATCH 1/2] smithy-core: add xml binding traits

---
 ...ment-80e80edee8a7461d99ca5f28c2547e59.json |  4 ++
 .../smithy-core/src/smithy_core/traits.py     | 40 +++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json

diff --git a/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json b/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json
new file mode 100644
index 000000000..36cac6613
--- /dev/null
+++ b/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json
@@ -0,0 +1,4 @@
+{
+  "type": "enhancement",
+  "description": "Added XML binding traits: `XMNameTrait`, `XMLNamespaceTrait`, `XMLFlattenedTrait`, and `XMLAttributeTrait`."
+}
\ No newline at end of file
diff --git a/packages/smithy-core/src/smithy_core/traits.py b/packages/smithy-core/src/smithy_core/traits.py
index d7dfd22cf..ed8f3702e 100644
--- a/packages/smithy-core/src/smithy_core/traits.py
+++ b/packages/smithy-core/src/smithy_core/traits.py
@@ -350,3 +350,43 @@ def name(self) -> str:
     @property
     def scheme(self) -> str | None:
         return self.document_value.get("scheme")  # type: ignore
+
+
+@dataclass(init=False, frozen=True)
+class XMLNameTrait(Trait, id=ShapeID("smithy.api#xmlName")):
+    document_value: str | None = None
+
+    def __post_init__(self):
+        assert isinstance(self.document_value, str)
+
+    @property
+    def value(self) -> str:
+        return self.document_value  # type: ignore
+
+
+@dataclass(init=False, frozen=True)
+class XMLNamespaceTrait(Trait, id=ShapeID("smithy.api#xmlNamespace")):
+    def __post_init__(self):
+        assert isinstance(self.document_value, Mapping)
+        assert isinstance(self.document_value["uri"], str)
+        assert isinstance(self.document_value.get("prefix"), str | None)
+
+    @property
+    def uri(self) -> str:
+        return self.document_value["uri"]  # type: ignore
+
+    @property
+    def prefix(self) -> str | None:
+        return self.document_value.get("prefix")  # type: ignore
+
+
+@dataclass(init=False, frozen=True)
+class XMLFlattenedTrait(Trait, id=ShapeID("smithy.api#xmlFlattened")):
+    def __post_init__(self):
+        assert self.document_value is None
+
+
+@dataclass(init=False, frozen=True)
+class XMLAttributeTrait(Trait, id=ShapeID("smithy.api#xmlAttribute")):
+    def __post_init__(self):
+        assert self.document_value is None

From 3b290b16d6791e39aea1691b7ae1ed0ef9f1ce0e Mon Sep 17 00:00:00 2001
From: Antonio Aranda <102337110+arandito@users.noreply.github.com>
Date: Fri, 20 Mar 2026 14:48:42 -0400
Subject: [PATCH 2/2] Fix type in changelog

Co-authored-by: jonathan343 <43360731+jonathan343@users.noreply.github.com>
---
 ...mithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json b/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json
index 36cac6613..ae06e0a5f 100644
--- a/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json
+++ b/packages/smithy-core/.changes/next-release/smithy-core-enhancement-80e80edee8a7461d99ca5f28c2547e59.json
@@ -1,4 +1,4 @@
 {
   "type": "enhancement",
-  "description": "Added XML binding traits: `XMNameTrait`, `XMLNamespaceTrait`, `XMLFlattenedTrait`, and `XMLAttributeTrait`."
+  "description": "Added XML binding traits: `XMLNameTrait`, `XMLNamespaceTrait`, `XMLFlattenedTrait`, and `XMLAttributeTrait`."
 }
\ No newline at end of file