Split protocol types into a standalone mcp-types package (#2973)

tests/server/lowlevel/test_server_discover.py

@@ -8,11 +8,11 @@ the handler's contract in isolation from the dispatch pipeline.
 import importlib.metadata
 from typing import Any, cast
 
+import mcp_types as types
 import pytest
+from mcp_types.version import MODERN_PROTOCOL_VERSIONS
 
-from mcp import types
 from mcp.server import Server, ServerRequestContext
-from mcp.shared.version import MODERN_PROTOCOL_VERSIONS
 
 # `Server._handle_discover` ignores its `ctx` argument entirely (it derives the
 # result from server state), so a sentinel keeps the call site type-correct

tests/server/lowlevel/test_server_listing.py

@@ -1,10 +1,7 @@
 """Basic tests for list_prompts, list_resources, and list_tools handlers without pagination."""
 
 import pytest
-
-from mcp import Client
-from mcp.server import Server, ServerRequestContext
-from mcp.types import (
+from mcp_types import (
     ListPromptsResult,
     ListResourcesResult,
     ListToolsResult,
@@ -14,6 +11,9 @@ from mcp.types import (
     Tool,
 )
 
+from mcp import Client
+from mcp.server import Server, ServerRequestContext
+
 
 @pytest.mark.anyio
 async def test_list_prompts_basic() -> None:

tests/server/lowlevel/test_server_pagination.py

@@ -1,14 +1,14 @@
 import pytest
-
-from mcp import Client
-from mcp.server import Server, ServerRequestContext
-from mcp.types import (
+from mcp_types import (
     ListPromptsResult,
     ListResourcesResult,
     ListToolsResult,
     PaginatedRequestParams,
 )
 
+from mcp import Client
+from mcp.server import Server, ServerRequestContext
+
 
 @pytest.mark.anyio
 async def test_list_prompts_pagination() -> None: