langchain-ai/langgraph · error · LangGraphDeprecatedSinceV05

`input` is deprecated and will be removed. Please use `input

Error message

`input` is deprecated and will be removed. Please use `input_schema` instead.

What it means

Error "`input` is deprecated and will be removed. Please use `input_schema` instead." thrown in langchain-ai/langgraph.

Source

Thrown at libs/langgraph/langgraph/graph/state.py:235

        self,
        state_schema: type[StateT],
        context_schema: type[ContextT] | None = None,
        *,
        input_schema: type[InputT] | None = None,
        output_schema: type[OutputT] | None = None,
        **kwargs: Unpack[DeprecatedKwargs],
    ) -> None:
        if (config_schema := kwargs.get("config_schema", MISSING)) is not MISSING:
            warnings.warn(
                "`config_schema` is deprecated and will be removed. Please use `context_schema` instead.",
                category=LangGraphDeprecatedSinceV10,
                stacklevel=2,
            )
            if context_schema is None:
                context_schema = cast(type[ContextT], config_schema)

        if (input_ := kwargs.get("input", MISSING)) is not MISSING:
            warnings.warn(
                "`input` is deprecated and will be removed. Please use `input_schema` instead.",
                category=LangGraphDeprecatedSinceV05,
                stacklevel=2,
            )
            if input_schema is None:
                input_schema = cast(type[InputT], input_)

        if (output := kwargs.get("output", MISSING)) is not MISSING:
            warnings.warn(
                "`output` is deprecated and will be removed. Please use `output_schema` instead.",
                category=LangGraphDeprecatedSinceV05,
                stacklevel=2,
            )
            if output_schema is None:
                output_schema = cast(type[OutputT], output)

        self.nodes = {}
        self.edges = set()

View on GitHub (pinned to 38031739e5)

When it happens

Trigger: Thrown at libs/langgraph/langgraph/graph/state.py:235 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of langchain-ai/langgraph@38031739e5 (2026-08-26). Data as JSON: /api/errors/1ddf914d39bbdb41. Report an issue: GitHub.