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Claude 60849f4319 Add mcp-client module: ChatClient calling tools from real external MCP servers over stdio

defaultToolCallbacks(ToolCallbackProvider) wires two real stdio MCP servers (the official
filesystem server and git server) into ChatClient, contrasted with defaultTools(Object) for a
local @Tool method. Every call -- MCP-sourced or local -- is logged through one Micrometer
ObservationHandler<ToolCallingObservationContext>; a first version wired that handler two ways
at once and every call logged twice, which is now a regression test. No real LLM is used
anywhere: every test builds an AssistantMessage.ToolCall by hand and drives it through the real
ToolCallingManager bean against real npx/uvx-launched MCP server processes.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01FtpJvZfg4nvLvtzgJTDWpB

2026-09-23 14:44:10 +00:00

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Demo repo

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Demo repo

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