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Implementation of SEP 973 - Additional metadata + icons support (#1357)
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Peter Alexander 2025-09-24 20:29:04 +01:00 • committed by GitHub
commit 71889d7387
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1 changed files with 308 additions and 8 deletions
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5
src/mcp/server/fastmcp/tools/base.py
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@ -11,7 +11,7 @@ from pydantic import BaseModel, Field
from mcp.server.fastmcp.exceptions import ToolError
from mcp.server.fastmcp.utilities.context_injection import find_context_parameter
from mcp.server.fastmcp.utilities.func_metadata import FuncMetadata, func_metadata
from mcp.types import ToolAnnotations
from mcp.types import Icon, ToolAnnotations
if TYPE_CHECKING:
from mcp.server.fastmcp.server import Context
@ -33,6 +33,7 @@ class Tool(BaseModel):
is_async: bool = Field(description="Whether the tool is async")
context_kwarg: str | None = Field(None, description="Name of the kwarg that should receive context")
annotations: ToolAnnotations | None = Field(None, description="Optional annotations for the tool")
icons: list[Icon] | None = Field(default=None, description="Optional list of icons for this tool")
@cached_property
def output_schema(self) -> dict[str, Any] | None:
@ -47,6 +48,7 @@ class Tool(BaseModel):
description: str | None = None,
context_kwarg: str | None = None,
annotations: ToolAnnotations | None = None,
icons: list[Icon] | None = None,
structured_output: bool | None = None,
) -> Tool:
"""Create a Tool from a function."""
@ -78,6 +80,7 @@ class Tool(BaseModel):
is_async=is_async,
context_kwarg=context_kwarg,
annotations=annotations,
icons=icons,
)
async def run(