In Deep Agents 0.6.0 the agent’s messages state is checkpointed with delta channels by default. For langchain will the create_agent functions AgentState messages property move to that same delta-style checkpointing by default, or is the expectation that we wire it up ourselves if we want that beha…

DeltaChannel is opt-in for create_agent, by deliberate design Current state of AgentState.messages: class AgentState(TypedDict, Generic[ResponseT]): """State schema for the agent.""" messages: Required[Annotated[list[AnyMessage], add_messages]] jump_to: NotRequired[Annotated[JumpTo | N…

I see that the DeltaChannel is currently in beta, so the expectation is that it won’t be used by default in langchain until it’s out of beta? Is there a way to opt into using it, similar to how we have different versions for streaming like v2 and v3?

@Christian-Browne , if you are satisfied, I would really appreciate it if you could mark the above answer as the solution :grin:

[image] keenborder786: DeltaChannel is NOT the default and is not planned to become the default (at least until it leaves beta in LangGraph). The AgentState base class will keep add_messages. This is correct! We’ve opted in for deepagents state schema given that it’s pre v1, and those agents…

Got it, thanks for confirming. Appreciate the work you all are doing!

Will DeltaChannel be the default for AgentState.messages, or expected to stay opt-in?

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Will DeltaChannel be the default for AgentState.messages, or expected to stay opt-in?

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