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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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docs/migration.md
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@ -10,7 +10,8 @@ Version 2 of the MCP Python SDK introduces several breaking changes to improve t
### `MCPServer.call_tool()` returns `CallToolResult`
`MCPServer.call_tool()` now always returns a `CallToolResult`. It previously
`MCPServer.call_tool()` now returns a `CallToolResult` (or an
`InputRequiredResult` when a multi-round tool requests further input). It previously
advertised `Sequence[ContentBlock] | dict[str, Any]` and leaked the internal
conversion shapes (a bare content sequence or a `(content, structured_content)`
tuple), forcing callers to re-assemble a `CallToolResult` themselves.