from typing import Annotated
from dataclasses import dataclass
from fastmcp import Context
from ...core.app import mcp
@dataclass
class Confirm:
ok: bool
@mcp.tool(
annotations={
"readOnlyHint": False,
"destructiveHint": True,
"openWorldHint": False,
}
)
async def delete_all(ctx: Context = None) -> str:
"""Dangerous example: asks user to confirm via elicitation before proceeding."""
result = await ctx.elicit(
message="DELETE ALL DATA in workspace?", response_type=Confirm
)
if result.action == "accept":
return "deleted" if result.data.ok else "cancelled"
elif result.action == "decline":
return "User declined to provide confirmation"
else: # cancel
return "Operation cancelled"
@mcp.tool(
annotations={
"readOnlyHint": True,
"openWorldHint": True,
}
)
async def get_weather(
location: Annotated[str | None, "City or location for weather lookup"] = None,
ctx: Context = None,
) -> str:
"""Get weather for a location, asking user if not specified."""
if not location:
# Ask user for the location
result = await ctx.elicit(
message="Which city would you like weather for?", response_type=str
)
if result.action == "accept":
location = result.data
else:
return "Weather request cancelled - no location provided"
# In a real implementation, you would fetch actual weather data here
return f"Weather for {location}: Sunny, 72°F (this is demo data)"
