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Conformance burn-down: server-side InputRequiredResult, Mcp-Method/Name validation, x-mcp-header filter (14 scenarios → green) (#2974)
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Max 2026-06-26 09:51:59 +02:00 • committed by GitHub
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11
src/mcp/server/mcpserver/server.py
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@ -24,6 +24,7 @@ from mcp_types import (
GetPromptRequestParams,
GetPromptResult,
Icon,
InputRequiredResult,
ListPromptsResult,
ListResourcesResult,
ListResourceTemplatesResult,
@ -306,8 +307,8 @@ class MCPServer(Generic[LifespanResultT]):
async def _handle_call_tool(
self, ctx: ServerRequestContext[LifespanResultT], params: CallToolRequestParams
) -> CallToolResult:
context = Context(request_context=ctx, mcp_server=self)
) -> CallToolResult | InputRequiredResult:
context = Context(request_context=ctx, mcp_server=self, input_params=params)
try:
return await self.call_tool(params.name, params.arguments or {}, context)
except MCPError:
@ -323,7 +324,7 @@ class MCPServer(Generic[LifespanResultT]):
async def _handle_read_resource(
self, ctx: ServerRequestContext[LifespanResultT], params: ReadResourceRequestParams
) -> ReadResourceResult:
context = Context(request_context=ctx, mcp_server=self)
context = Context(request_context=ctx, mcp_server=self, input_params=params)
try:
results = await self.read_resource(params.uri, context)
except ResourceNotFoundError as err:
@ -365,7 +366,7 @@ class MCPServer(Generic[LifespanResultT]):
async def _handle_get_prompt(
self, ctx: ServerRequestContext[LifespanResultT], params: GetPromptRequestParams
) -> GetPromptResult:
context = Context(request_context=ctx, mcp_server=self)
context = Context(request_context=ctx, mcp_server=self, input_params=params)
return await self.get_prompt(params.name, params.arguments, context)
async def list_tools(self) -> list[MCPTool]:
@ -387,7 +388,7 @@ class MCPServer(Generic[LifespanResultT]):
async def call_tool(
self, name: str, arguments: dict[str, Any], context: Context[LifespanResultT, Any] | None = None
) -> CallToolResult:
) -> CallToolResult | InputRequiredResult:
"""Call a tool by name with arguments."""
if context is None:
context = Context(mcp_server=self)