Remove test warnings (#2331)

pyproject.toml

@@ -103,6 +103,11 @@ fallback-version = "0.0.0"
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
 # filterwarnings = ["error::DeprecationWarning"]
+filterwarnings = [
+    # Suppress OAuth in-memory token storage warnings in tests
+    # Tests intentionally use ephemeral storage; this warning is for end users
+    "ignore:Using in-memory token storage:UserWarning",
+]
 timeout = 5
 env = [
     "FASTMCP_TEST_MODE=1",

src/fastmcp/tools/tool.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import inspect
-import warnings
 from collections.abc import Callable
 from dataclasses import dataclass
 from typing import (
@@ -9,7 +8,6 @@ from typing import (
     Annotated,
     Any,
     Generic,
-    Literal,
     TypeAlias,
     get_type_hints,
 )
@@ -21,7 +19,6 @@ from mcp.types import Tool as MCPTool
 from pydantic import Field, PydanticSchemaGenerationError
 from typing_extensions import TypeVar
 
-import fastmcp
 from fastmcp.server.dependencies import get_context
 from fastmcp.utilities.components import FastMCPComponent
 from fastmcp.utilities.json_schema import compress_schema
@@ -173,7 +170,7 @@ class Tool(FastMCPComponent):
         tags: set[str] | None = None,
         annotations: ToolAnnotations | None = None,
         exclude_args: list[str] | None = None,
-        output_schema: dict[str, Any] | Literal[False] | NotSetT | None = NotSet,
+        output_schema: dict[str, Any] | NotSetT | None = NotSet,
         serializer: ToolResultSerializerType | None = None,
         meta: dict[str, Any] | None = None,
         enabled: bool | None = None,
@@ -216,7 +213,7 @@ class Tool(FastMCPComponent):
         description: str | NotSetT | None = NotSet,
         tags: set[str] | None = None,
         annotations: ToolAnnotations | NotSetT | None = NotSet,
-        output_schema: dict[str, Any] | Literal[False] | NotSetT | None = NotSet,
+        output_schema: dict[str, Any] | NotSetT | None = NotSet,
         serializer: ToolResultSerializerType | None = None,
         meta: dict[str, Any] | NotSetT | None = NotSet,
         transform_args: dict[str, ArgTransform] | None = None,
@@ -255,7 +252,7 @@ class FunctionTool(Tool):
         tags: set[str] | None = None,
         annotations: ToolAnnotations | None = None,
         exclude_args: list[str] | None = None,
-        output_schema: dict[str, Any] | Literal[False] | NotSetT | None = NotSet,
+        output_schema: dict[str, Any] | NotSetT | None = NotSet,
         serializer: ToolResultSerializerType | None = None,
         meta: dict[str, Any] | None = None,
         enabled: bool | None = None,
@@ -269,17 +266,8 @@ class FunctionTool(Tool):
 
         if isinstance(output_schema, NotSetT):
             final_output_schema = parsed_fn.output_schema
-        elif output_schema is False:
-            # Handle False as deprecated synonym for None (deprecated in 2.11.4)
-            if fastmcp.settings.deprecation_warnings:
-                warnings.warn(
-                    "Passing output_schema=False is deprecated. Use output_schema=None instead.",
-                    DeprecationWarning,
-                    stacklevel=2,
-                )
-            final_output_schema = None
         else:
-            # At this point output_schema is not NotSetT and not False, so it must be dict | None
+            # At this point output_schema is not NotSetT, so it must be dict | None
             final_output_schema = output_schema
         # Note: explicit schemas (dict) are used as-is without auto-wrapping
 

src/fastmcp/tools/tool_transform.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import inspect
-import warnings
 from collections.abc import Callable
 from contextvars import ContextVar
 from dataclasses import dataclass
@@ -13,7 +12,6 @@ from pydantic import ConfigDict
 from pydantic.fields import Field
 from pydantic.functional_validators import BeforeValidator
 
-import fastmcp
 from fastmcp.tools.tool import ParsedFunction, Tool, ToolResult, _convert_to_content
 from fastmcp.utilities.components import _convert_set_default_none
 from fastmcp.utilities.json_schema import compress_schema
@@ -371,7 +369,7 @@ class TransformedTool(Tool):
         transform_fn: Callable[..., Any] | None = None,
         transform_args: dict[str, ArgTransform] | None = None,
         annotations: ToolAnnotations | NotSetT | None = NotSet,
-        output_schema: dict[str, Any] | Literal[False] | NotSetT | None = NotSet,
+        output_schema: dict[str, Any] | NotSetT | None = NotSet,
         serializer: Callable[[Any], str] | NotSetT | None = NotSet,
         meta: dict[str, Any] | NotSetT | None = NotSet,
         enabled: bool | None = None,
@@ -486,15 +484,6 @@ class TransformedTool(Tool):
                         final_output_schema = tool.output_schema
             else:
                 final_output_schema = tool.output_schema
-        elif output_schema is False:
-            # Handle False as deprecated synonym for None (deprecated in 2.11.4)
-            if fastmcp.settings.deprecation_warnings:
-                warnings.warn(
-                    "Passing output_schema=False is deprecated. Use output_schema=None instead.",
-                    DeprecationWarning,
-                    stacklevel=2,
-                )
-            final_output_schema = None
         else:
             final_output_schema = cast(dict | None, output_schema)
 

tests/client/test_sse.py

@@ -94,10 +94,13 @@ async def nested_sse_server():
     from starlette.applications import Starlette
     from starlette.routing import Mount
 
+    from fastmcp.server.http import create_sse_app
     from fastmcp.utilities.http import find_available_port
 
     server = create_test_server()
-    sse_app = server.sse_app(path="/mcp/sse/", message_path="/mcp/messages")
+    sse_app = create_sse_app(
+        server=server, message_path="/mcp/messages", sse_path="/mcp/sse/"
+    )
 
     # Nest the app under multiple mounts to test URL resolution
     inner = Starlette(routes=[Mount("/nest-inner", app=sse_app)])