From 6b8d4b5a23b27862dfef2d2c395f1d80c6d23512 Mon Sep 17 00:00:00 2001
From: Niels Kaspers <kaspersniels@gmail.com>
Date: Sun, 15 Mar 2026 09:06:47 +0200
Subject: [PATCH] feat(time): add tool annotations to get_current_time and
 convert_time (#3574)

---
 src/time/src/mcp_server_time/server.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/time/src/mcp_server_time/server.py b/src/time/src/mcp_server_time/server.py
index e10d6b4eed..83e97af333 100644
--- a/src/time/src/mcp_server_time/server.py
+++ b/src/time/src/mcp_server_time/server.py
@@ -8,7 +8,7 @@
 
 from mcp.server import Server
 from mcp.server.stdio import stdio_server
-from mcp.types import Tool, TextContent, ImageContent, EmbeddedResource, ErrorData, INVALID_PARAMS
+from mcp.types import Tool, ToolAnnotations, TextContent, ImageContent, EmbeddedResource, ErrorData, INVALID_PARAMS
 from mcp.shared.exceptions import McpError
 
 from pydantic import BaseModel
@@ -142,6 +142,12 @@ async def list_tools() -> list[Tool]:
                     },
                     "required": ["timezone"],
                 },
+                annotations=ToolAnnotations(
+                    readOnlyHint=True,
+                    destructiveHint=False,
+                    idempotentHint=True,
+                    openWorldHint=False,
+                ),
             ),
             Tool(
                 name=TimeTools.CONVERT_TIME.value,
@@ -164,6 +170,12 @@ async def list_tools() -> list[Tool]:
                     },
                     "required": ["source_timezone", "time", "target_timezone"],
                 },
+                annotations=ToolAnnotations(
+                    readOnlyHint=True,
+                    destructiveHint=False,
+                    idempotentHint=True,
+                    openWorldHint=False,
+                ),
             ),
         ]