style: Fix imports and line length formatting

src/mcp/server/__init__.py

@@ -1,4 +1,4 @@
-from .lowlevel import Server, NotificationOptions
 from .fastmcp import FastMCP
+from .lowlevel import NotificationOptions, Server
 
 __all__ = ["Server", "FastMCP", "NotificationOptions"]

src/mcp/server/fastmcp/__init__.py

@@ -1,7 +1,8 @@
 """FastMCP - A more ergonomic interface for MCP servers."""
 
 from importlib.metadata import version
-from .server import FastMCP, Context
+
+from .server import Context, FastMCP
 from .utilities.types import Image
 
 __version__ = version("mcp")

src/mcp/server/fastmcp/prompts/base.py

@@ -1,13 +1,14 @@
 """Base classes for FastMCP prompts."""
 
-import json
-from typing import Any, Literal, Sequence, Awaitable
 import inspect
+import json
 from collections.abc import Callable
+from typing import Any, Awaitable, Literal, Sequence
 
-from pydantic import BaseModel, Field, TypeAdapter, validate_call
-from mcp.types import TextContent, ImageContent, EmbeddedResource
 import pydantic_core
+from pydantic import BaseModel, Field, TypeAdapter, validate_call
+
+from mcp.types import EmbeddedResource, ImageContent, TextContent
 
 CONTENT_TYPES = TextContent | ImageContent | EmbeddedResource
 

src/mcp/server/fastmcp/resources/__init__.py

@@ -1,14 +1,14 @@
 from .base import Resource
-from .types import (
-    TextResource,
-    BinaryResource,
-    FunctionResource,
-    FileResource,
-    HttpResource,
-    DirectoryResource,
-)
-from .templates import ResourceTemplate
 from .resource_manager import ResourceManager
+from .templates import ResourceTemplate
+from .types import (
+    BinaryResource,
+    DirectoryResource,
+    FileResource,
+    FunctionResource,
+    HttpResource,
+    TextResource,
+)
 
 __all__ = [
     "Resource",

src/mcp/server/fastmcp/resources/resource_manager.py

@@ -1,7 +1,6 @@
 """Resource manager functionality."""
 
 from typing import Callable
-from collections.abc import Iterable
 
 from pydantic import AnyUrl
 

src/mcp/server/fastmcp/resources/types.py

@@ -1,11 +1,11 @@
 """Concrete resource implementations."""
 
-import anyio
 import json
-from pathlib import Path
-from typing import Any, Callable
 from collections.abc import Callable
+from pathlib import Path
+from typing import Any
 
+import anyio
 import httpx
 import pydantic.json
 import pydantic_core

src/mcp/server/fastmcp/server.py

@@ -1,17 +1,25 @@
 """FastMCP - A more ergonomic interface for MCP servers."""
 
-import anyio
 import functools
 import inspect
 import json
 import re
 from itertools import chain
 from typing import Any, Callable, Literal, Sequence
-from collections.abc import Iterable
 
+import anyio
 import pydantic_core
-from pydantic import Field
 import uvicorn
+from pydantic import BaseModel, Field
+from pydantic.networks import AnyUrl
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+from mcp.server.fastmcp.exceptions import ResourceError
+from mcp.server.fastmcp.prompts import Prompt, PromptManager
+from mcp.server.fastmcp.resources import FunctionResource, Resource, ResourceManager
+from mcp.server.fastmcp.tools import ToolManager
+from mcp.server.fastmcp.utilities.logging import configure_logging, get_logger
+from mcp.server.fastmcp.utilities.types import Image
 from mcp.server.lowlevel import Server as MCPServer
 from mcp.server.sse import SseServerTransport
 from mcp.server.stdio import stdio_server
@@ -24,6 +32,8 @@ from mcp.types import (
 )
 from mcp.types import (
     Prompt as MCPPrompt,
+)
+from mcp.types import (
     PromptArgument as MCPPromptArgument,
 )
 from mcp.types import (
@@ -35,16 +45,6 @@ from mcp.types import (
 from mcp.types import (
     Tool as MCPTool,
 )
-from pydantic import BaseModel
-from pydantic.networks import AnyUrl
-from pydantic_settings import BaseSettings, SettingsConfigDict
-
-from mcp.server.fastmcp.exceptions import ResourceError
-from mcp.server.fastmcp.prompts import Prompt, PromptManager
-from mcp.server.fastmcp.resources import FunctionResource, Resource, ResourceManager
-from mcp.server.fastmcp.tools import ToolManager
-from mcp.server.fastmcp.utilities.logging import configure_logging, get_logger
-from mcp.server.fastmcp.utilities.types import Image
 
 logger = get_logger(__name__)
 
@@ -226,8 +226,9 @@ class FastMCP:
     def tool(self, name: str | None = None, description: str | None = None) -> Callable:
         """Decorator to register a tool.
 
-        Tools can optionally request a Context object by adding a parameter with the Context type annotation.
-        The context provides access to MCP capabilities like logging, progress reporting, and resource access.
+        Tools can optionally request a Context object by adding a parameter with the
+        Context type annotation. The context provides access to MCP capabilities like
+        logging, progress reporting, and resource access.
 
         Args:
             name: Optional name for the tool (defaults to function name)

src/mcp/server/fastmcp/tools/base.py

@@ -1,12 +1,12 @@
-import mcp.server.fastmcp
-from mcp.server.fastmcp.exceptions import ToolError
-from mcp.server.fastmcp.utilities.func_metadata import func_metadata, FuncMetadata
-from pydantic import BaseModel, Field
-
-
 import inspect
 from typing import TYPE_CHECKING, Any, Callable
 
+from pydantic import BaseModel, Field
+
+import mcp.server.fastmcp
+from mcp.server.fastmcp.exceptions import ToolError
+from mcp.server.fastmcp.utilities.func_metadata import FuncMetadata, func_metadata
+
 if TYPE_CHECKING:
     from mcp.server.fastmcp.server import Context
 
@@ -19,7 +19,8 @@ class Tool(BaseModel):
     description: str = Field(description="Description of what the tool does")
     parameters: dict = Field(description="JSON schema for tool parameters")
     fn_metadata: FuncMetadata = Field(
-        description="Metadata about the function including a pydantic model for tool arguments"
+        description="Metadata about the function including a pydantic model for tool"
+        " arguments"
     )
     is_async: bool = Field(description="Whether the tool is async")
     context_kwarg: str | None = Field(

src/mcp/server/fastmcp/tools/tool_manager.py

@@ -1,9 +1,8 @@
+from collections.abc import Callable
+from typing import TYPE_CHECKING, Any
+
 from mcp.server.fastmcp.exceptions import ToolError
 from mcp.server.fastmcp.tools.base import Tool
-
-from typing import Any, Callable, TYPE_CHECKING
-from collections.abc import Callable
-
 from mcp.server.fastmcp.utilities.logging import get_logger
 
 if TYPE_CHECKING:

src/mcp/server/fastmcp/utilities/func_metadata.py

@@ -1,21 +1,19 @@
 import inspect
-from collections.abc import Callable, Sequence, Awaitable
+import json
+from collections.abc import Awaitable, Callable, Sequence
 from typing import (
     Annotated,
     Any,
     ForwardRef,
 )
-from pydantic import Field
-from mcp.server.fastmcp.exceptions import InvalidSignature
-from pydantic._internal._typing_extra import eval_type_backport
-import json
-from pydantic import BaseModel
-from pydantic.fields import FieldInfo
-from pydantic import ConfigDict, create_model
-from pydantic import WithJsonSchema
-from pydantic_core import PydanticUndefined
-from mcp.server.fastmcp.utilities.logging import get_logger
 
+from pydantic import BaseModel, ConfigDict, Field, WithJsonSchema, create_model
+from pydantic._internal._typing_extra import eval_type_backport
+from pydantic.fields import FieldInfo
+from pydantic_core import PydanticUndefined
+
+from mcp.server.fastmcp.exceptions import InvalidSignature
+from mcp.server.fastmcp.utilities.logging import get_logger
 
 logger = get_logger(__name__)
 
@@ -105,7 +103,8 @@ class FuncMetadata(BaseModel):
 
 
 def func_metadata(func: Callable, skip_names: Sequence[str] = ()) -> FuncMetadata:
-    """Given a function, return metadata including a pydantic model representing its signature.
+    """Given a function, return metadata including a pydantic model representing its
+    signature.
 
     The use case for this is
     ```
@@ -114,7 +113,8 @@ def func_metadata(func: Callable, skip_names: Sequence[str] = ()) -> FuncMetadat
     return func(**validated_args.model_dump_one_level())
     ```
 
-    **critically** it also provides pre-parse helper to attempt to parse things from JSON.
+    **critically** it also provides pre-parse helper to attempt to parse things from
+    JSON.
 
     Args:
         func: The function to convert to a pydantic model
@@ -130,7 +130,7 @@ def func_metadata(func: Callable, skip_names: Sequence[str] = ()) -> FuncMetadat
     for param in params.values():
         if param.name.startswith("_"):
             raise InvalidSignature(
-                f"Parameter {param.name} of {func.__name__} may not start with an underscore"
+                f"Parameter {param.name} of {func.__name__} cannot start with '_'"
             )
         if param.name in skip_names:
             continue

src/mcp/server/fastmcp/utilities/logging.py

@@ -3,6 +3,7 @@
 import logging
 from typing import Literal
 
+
 def get_logger(name: str) -> logging.Logger:
     """Get a logger nested under MCPnamespace.
 
@@ -27,6 +28,7 @@ def configure_logging(
     try:
         from rich.console import Console
         from rich.logging import RichHandler
+
         handlers.append(RichHandler(console=Console(stderr=True), rich_tracebacks=True))
     except ImportError:
         pass

src/mcp/server/lowlevel/__init__.py

@@ -1,3 +1,3 @@
-from .server import Server, NotificationOptions
+from .server import NotificationOptions, Server
 
 __all__ = ["Server", "NotificationOptions"]