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feat(time): add tool annotations to get_current_time and convert_time (#3574) (#3581)

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feat(time): add tool annotations

Adds MCP ToolAnnotations to both time server tools (get_current_time, convert_time). Both are read-only, non-destructive, idempotent, and closed-world.

Fixes #3574
This commit is contained in:
Niels Kaspers
2026-03-15 17:51:02 +02:00
committed by GitHub
parent c2ee97e792
commit 81f8301cd2
1 changed files with 13 additions and 1 deletions
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14
src/time/src/mcp_server_time/server.py
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@@ -8,7 +8,7 @@ from tzlocal import get_localzone_name # ← returns "Europe/Paris", etc.
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 serve(local_timezone: str | None = None) -> None:
},
"required": ["timezone"],
},
annotations=ToolAnnotations(
readOnlyHint=True,
destructiveHint=False,
idempotentHint=True,
openWorldHint=False,
),
),
Tool(
name=TimeTools.CONVERT_TIME.value,
@@ -164,6 +170,12 @@ async def serve(local_timezone: str | None = None) -> None:
},
"required": ["source_timezone", "time", "target_timezone"],
},
annotations=ToolAnnotations(
readOnlyHint=True,
destructiveHint=False,
idempotentHint=True,
openWorldHint=False,
),
),
]