From 337cd41f5f4d0be8d4771ec2c6846fb17573bc63 Mon Sep 17 00:00:00 2001
From: Jeremiah Lowin <153965+jlowin@users.noreply.github.com>
Date: Mon, 28 Jul 2025 18:11:32 -0400
Subject: [PATCH] Sort tags for deterministic output

---
 src/fastmcp/utilities/components.py              | 2 +-
 tests/server/openapi/test_basic_functionality.py | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/fastmcp/utilities/components.py b/src/fastmcp/utilities/components.py
index 715084a8b..f2955c6b0 100644
--- a/src/fastmcp/utilities/components.py
+++ b/src/fastmcp/utilities/components.py
@@ -63,7 +63,7 @@ class FastMCPComponent(FastMCPBaseModel):
     def get_meta(self) -> dict[str, Any]:
         """Get the meta information about the component."""
         if self.tags:
-            return {"tags": list(self.tags)} | self.meta
+            return {"tags": sorted(self.tags)} | self.meta
         else:
             return self.meta
 
diff --git a/tests/server/openapi/test_basic_functionality.py b/tests/server/openapi/test_basic_functionality.py
index 29e67360f..014531b87 100644
--- a/tests/server/openapi/test_basic_functionality.py
+++ b/tests/server/openapi/test_basic_functionality.py
@@ -97,7 +97,7 @@ class TestTools:
 
         assert tools[0].model_dump() == dict(
             name="create_user_users_post",
-            meta={"tags": ["users", "create"]},
+            meta=dict(tags=["create", "users"]),
             title=None,
             annotations=None,
             description=IsStr(regex=r"^Create a new user\..*$", regex_flags=re.DOTALL),
@@ -122,7 +122,7 @@ class TestTools:
         )
         assert tools[1].model_dump() == dict(
             name="update_user_name_users",
-            meta={"tags": ["users", "update"]},
+            meta=dict(tags=["update", "users"]),
             title=None,
             annotations=None,
             description=IsStr(