.NET: [Feature]: Add ability to define a custom ChatHistoryProvider for Workflow as Agent #6327

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1. Marco Minerva (marcominerva)

   added the

   Feature

   issue type on Jun 4, 2026
2. github-project-automation

   added this to Agent Frameworkon Jun 4, 2026
3. Evan Mattson (moonbox3)

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   on Jun 4, 2026
4. github-actions

   changed the title [-][Feature]: Add ability to define a custom ChatHistoryProvider for Workflow as Agent[/-] [+].NET: [Feature]: Add ability to define a custom ChatHistoryProvider for Workflow as Agent[/+] on Jun 4, 2026
5. chetantoshniwal

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   Peter Ibekwe (peibekwe)

   on Jun 4, 2026
6. chetantoshniwal

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7. marcominerva commented on Jun 25, 2026

   

   Marco Minerva (marcominerva)

   on Jun 25, 2026

   ContributorAuthor

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   To provide some additional context, this request stems from the need to customize how Chat History is managed when a workflow is exposed as an Agent. Since we are effectively dealing with an Agent, it would be useful to be able to configure the same properties that are typically available when using an InMemoryChatHistoryProvider in a "classic" Agent, in order to control how history messages are handled. For example:

   var chatHistoryProvider = new InMemoryChatHistoryProvider(new()
   {
       ChatReducer = new MessageCountingChatReducer(20),
       ReducerTriggerEvent = InMemoryChatHistoryProviderOptions.ChatReducerTriggerEvent.AfterMessageAdded,
       StorageInputRequestMessageFilter = messages =>
       {
           return messages.Where(m => m.GetAgentRequestMessageSourceType() != AgentRequestMessageSourceType.ChatHistory
               && m.GetAgentRequestMessageSourceType() != AgentRequestMessageSourceType.AIContextProvider);
       }
   });
8. VolzM commented on Jul 6, 2026

   

   Michael Volz (VolzM)

   on Jul 6, 2026

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   I'm having the same issue. I'm trying to retrieve the Chat History from a WorkflowSession. But since WorkflowSession and WorkflowChatHistoryProvider are both internal I have no clean way to access it.
9. marcominerva commented on Sep 29, 2026

   

   Marco Minerva (marcominerva)

   on Sep 29, 2026

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   I finally found some time to put together a PR: #8840.

   I believe this new feature could be useful in a number of scenarios. I already have several customers with use cases that would benefit from this kind of approach, so I hope the proposal can be considered.

   👍React with 👍1Reacted by Totti