Under the hood
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Assistant metadata can hold the API's original tool inputs so replayed history echoes calls exactly as emitted.
Assistant message wrapper metadata can now carry a wire_tool_inputs field holding the original, API-produced tool_use inputs keyed by tool_use id, separate from the client-normalized input in message.content. This lets replayed conversation history echo tool calls back exactly as the API emitted them.
Names in the bundlewire_tool_inputs