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docs: add note for disabling conversation managers (#3823)

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opieter-aws
2026-08-14 14:52:45 -04:00
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site/src/content/docs/user-guide/concepts/agents/conversation-management.mdx
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@@ -45,12 +45,19 @@ or [build your own manager](#creating-a-conversationmanager) that matches your r
### NullConversationManager
The [`NullConversationManager`](@api/python/strands.agent.conversation_manager.null_conversation_manager#NullConversationManager) is a simple implementation that does not modify the conversation history. It's useful for:
The [`NullConversationManager`](@api/python/strands.agent.conversation_manager.null_conversation_manager#NullConversationManager) is a simple implementation that does not modify the conversation history. Pass it explicitly to turn off the default [`SlidingWindowConversationManager`](#slidingwindowconversationmanager) and keep the full conversation history. It's useful for:
- Short conversations that won't exceed context limits
- Debugging purposes
- Cases where you want to manage context manually
:::note
Omitting <Syntax py="conversation_manager" ts="conversationManager" /> — or passing
<Syntax py="conversation_manager=None" ts="conversationManager: undefined" /> — selects
the default sliding window. It does **not** disable trimming. To keep the full history,
pass a `NullConversationManager` instance explicitly.
:::
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@@ -75,7 +82,7 @@ agent = Agent(
### SlidingWindowConversationManager
The [`SlidingWindowConversationManager`](@api/python/strands.agent.conversation_manager.sliding_window_conversation_manager#SlidingWindowConversationManager) implements a sliding window strategy that maintains a fixed number of recent messages. This is the default conversation manager used by the Agent class.
The [`SlidingWindowConversationManager`](@api/python/strands.agent.conversation_manager.sliding_window_conversation_manager#SlidingWindowConversationManager) implements a sliding window strategy that maintains a fixed number of recent messages. This is the default conversation manager used by the Agent class when no <Syntax py="conversation_manager" ts="conversationManager" /> is specified. To turn it off and keep the full history, pass a [`NullConversationManager`](#nullconversationmanager).
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