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DOC: MessageGraph not appears in /langgraph/reference/graphs #314

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opened 2026-02-20 17:36:19 -05:00 by yindo · 1 comment
yindo commented 2026-02-20 17:36:19 -05:00
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Originally created by @WendaoLee on GitHub (Nov 18, 2024).

Issue with current documentation:

I'm learning langgraph's core concepts through Conceptual Documents and Library Reference.

I noticed in the Glossary Chapter,it metioned MessageGraph,but it not appears in Library Reference,though the lib indeedly export this class:

from langgraph.graph.message import MessageGraph, MessagesState, add_messages
from langgraph.graph.state import GraphCommand, StateGraph

__all__ = [
    "END",
    "START",
    "Graph",
    "StateGraph",
    "GraphCommand",
    "MessageGraph",
    "add_messages",
    "MessagesState",
]

Is this omission intentional, or is it an oversight?

Idea or request for content:

Add MessageGraph Class documents in Library Reference.

Originally created by @WendaoLee on GitHub (Nov 18, 2024). ### Issue with current documentation: I'm learning langgraph's core concepts through [Conceptual Documents](https://langchain-ai.github.io/langgraph/concepts/low_level/#messagegraph) and [Library Reference](https://langchain-ai.github.io/langgraph/reference/graphs/). I noticed in the [Glossary Chapter](https://langchain-ai.github.io/langgraph/concepts/low_level/#messagegraph),it metioned `MessageGraph`,but it not appears in [Library Reference](https://langchain-ai.github.io/langgraph/reference/graphs/),though the lib indeedly export this class: ```python from langgraph.graph.message import MessageGraph, MessagesState, add_messages from langgraph.graph.state import GraphCommand, StateGraph __all__ = [ "END", "START", "Graph", "StateGraph", "GraphCommand", "MessageGraph", "add_messages", "MessagesState", ] ``` Is this omission intentional, or is it an oversight? ### Idea or request for content: Add `MessageGraph Class` documents in [Library Reference](https://langchain-ai.github.io/langgraph/reference/graphs/).
yindo closed this issue 2026-02-20 17:36:19 -05:00
yindo commented 2026-02-20 17:36:20 -05:00
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@vbarda commented on GitHub (Nov 18, 2024):

@WendaoLee this is on purpose -- we're not encouraging people to use MessageGraph. You can still use MessagesState if you need to have a shorthand for using messages key with add_messages reducer

@vbarda commented on GitHub (Nov 18, 2024): @WendaoLee this is on purpose -- we're not encouraging people to use `MessageGraph`. You can still use `MessagesState` if you need to have a shorthand for using `messages` key with `add_messages` reducer
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Reference: langchain-ai/langgraph#314
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