From bf3c54f6f198bada3c7009538970e3e678cb5bfe Mon Sep 17 00:00:00 2001
From: Jeremiah Lowin <153965+jlowin@users.noreply.github.com>
Date: Wed, 11 Jun 2025 11:27:02 -0400
Subject: [PATCH 1/2] Ensure we handle false correctly; removed unused kwarg

---
 src/fastmcp/server/server.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/fastmcp/server/server.py b/src/fastmcp/server/server.py
index b18d846d2..46661c7ba 100644
--- a/src/fastmcp/server/server.py
+++ b/src/fastmcp/server/server.py
@@ -1231,7 +1231,6 @@ class FastMCP(Generic[LifespanResultT]):
         port: int | None = None,
         log_level: str | None = None,
         path: str | None = None,
-        message_path: str | None = None,
         uvicorn_config: dict[str, Any] | None = None,
     ) -> None:
         """Run the server using SSE transport."""
@@ -1333,10 +1332,14 @@ class FastMCP(Generic[LifespanResultT]):
                 event_store=None,
                 auth=self.auth,
                 json_response=(
-                    json_response or self._deprecated_settings.json_response
+                    json_response
+                    if json_response is not None
+                    else self._deprecated_settings.json_response
                 ),
                 stateless_http=(
-                    stateless_http or self._deprecated_settings.stateless_http
+                    stateless_http
+                    if stateless_http is not None
+                    else self._deprecated_settings.stateless_http
                 ),
                 debug=self._deprecated_settings.debug,
                 middleware=middleware,

From 1a6bb55b271b9c668c0d832fa5dbd714cc9c4757 Mon Sep 17 00:00:00 2001
From: William Easton <bill.easton@elastic.co>
Date: Wed, 11 Jun 2025 13:43:11 -0500
Subject: [PATCH 2/2] add examples to param transformation

---
 src/fastmcp/tools/tool_transform.py |  6 ++++++
 tests/tools/test_tool_transform.py  | 32 +++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/src/fastmcp/tools/tool_transform.py b/src/fastmcp/tools/tool_transform.py
index f7293afe9..e84c44407 100644
--- a/src/fastmcp/tools/tool_transform.py
+++ b/src/fastmcp/tools/tool_transform.py
@@ -97,6 +97,7 @@ class ArgTransform:
         type: New type for the argument. Use ... for no change.
         hide: If True, hide this argument from clients but pass a constant value to parent.
         required: If True, make argument required (remove default). Use ... for no change.
+        examples: Examples for the argument. Use ... for no change.
 
     Examples:
         # Rename argument 'old_name' to 'new_name'
@@ -137,6 +138,7 @@ class ArgTransform:
     type: Any | EllipsisType = NotSet
     hide: bool = False
     required: Literal[True] | EllipsisType = NotSet
+    examples: Any | EllipsisType = NotSet
 
     def __post_init__(self):
         """Validate that only one of default or default_factory is provided."""
@@ -584,6 +586,10 @@ class TransformedTool(Tool):
             # Update the schema with the type information from TypeAdapter
             new_schema.update(type_schema)
 
+        # Handle examples transformation
+        if transform.examples is not NotSet:
+            new_schema["examples"] = transform.examples
+
         return new_name, new_schema, is_required
 
     @staticmethod
diff --git a/tests/tools/test_tool_transform.py b/tests/tools/test_tool_transform.py
index f9e91b92e..0498c6c5c 100644
--- a/tests/tools/test_tool_transform.py
+++ b/tests/tools/test_tool_transform.py
@@ -987,3 +987,35 @@ class TestEnableDisable:
 
             with pytest.raises(ToolError):
                 await client.call_tool("new_add", {"x": 1, "y": 2})
+
+
+def test_arg_transform_examples_in_schema(add_tool):
+    # Simple example
+    new_tool = Tool.from_tool(
+        add_tool,
+        transform_args={
+            "old_x": ArgTransform(examples=[1, 2, 3]),
+        },
+    )
+    prop = get_property(new_tool, "old_x")
+    assert prop["examples"] == [1, 2, 3]
+
+    # Nested example (e.g., for array type)
+    new_tool2 = Tool.from_tool(
+        add_tool,
+        transform_args={
+            "old_x": ArgTransform(examples=[["a", "b"], ["c", "d"]]),
+        },
+    )
+    prop2 = get_property(new_tool2, "old_x")
+    assert prop2["examples"] == [["a", "b"], ["c", "d"]]
+
+    # If not set, should not be present
+    new_tool3 = Tool.from_tool(
+        add_tool,
+        transform_args={
+            "old_x": ArgTransform(),
+        },
+    )
+    prop3 = get_property(new_tool3, "old_x")
+    assert "examples" not in prop3