langgraph compiledstategraph - Brave Search

langchain-ai.github.io › langgraphjs › reference › classes › langgraph.CompiledStateGraph.html

CompiledStateGraph | LangGraph.js API Reference

CompiledStateGraph · Defined in libs/langgraph-core/dist/graph/state.d.ts:200 · constructor · ~ Node · Return · Type ~ Node · Type ~ Run · Input ~ Run · Output auto · Validate builder cache? channels checkpointer? config? debug description? input · Channels interrupt ·

langchain-ai.github.io › langgraphjs › reference › classes › langgraph.StateGraph.html

StateGraph | LangGraph.js API Reference

Defined in libs/langgraph-core/dist/graph/state.d.ts:176 · compile( __namedParameters?: { cache?: BaseCache<unknown>; checkpointer?: boolean | BaseCheckpointSaver<number>; description?: string; interruptAfter?: "*" | N[]; interruptBefore?: "*" | N[]; name?: string; store?: BaseStore; }, ): CompiledStateGraph< { [K in string | number | symbol]: S[K] }, { [K in string | number | symbol]: U[K] }, N, I, O, C, NodeReturnType, InterruptType, WriterType, > Optional__namedParameters: { cache?: BaseCache<unknown>; checkpointer?: boolean | BaseCheckpointSaver<number>; description?: string; interruptAfter?: "*" | N[]; interruptBefore?: "*" | N[]; name?: string; store?: BaseStore; } Overrides Graph.compile ·

Discussions

Make `StateGraph` and `CompiledStateGraph` more type safe

Graphs should be generic on: StateT InputT OutputT ContextT We should thus be able to: Check that node signatures are correct (accept state: StateT and runtime: ContextT) Check the input to invoke/... More on github.com

github.com

3

June 9, 2025

Subgraph state update contains the entire CompiledStateGraph in it which is not serializable for the astream events

Checked other resources This is a bug, not a usage question. For questions, please use GitHub Discussions. I added a clear and detailed title that summarizes the issue. I read what a minimal reprod... More on github.com

github.com

4

February 13, 2025

Copy of CompiledStateGraph request mandatory to explicit "update={}"

Checked other resources I added a very descriptive title to this issue. I searched the LangGraph/LangChain documentation with the integrated search. I used the GitHub search to find a similar quest... More on github.com

github.com

0

October 11, 2024

How to add an Agent in a LangGraph as a node? Specifically agent created out of create_sql_agent

Hey u/copp , you can write whatever code you'd like within a node, including delegating to the existing `create_sql_agent` method. You can start from some of the code in the introductory guide: https://langchain-ai.github.io/langgraph/tutorials/introduction/#part-1-build-a-basic-chatbot Then initialize and call out to your prebuilt SQL agent instead of simply invoking an LLM. More on reddit.com

r/LangChain

4

2

June 17, 2024

Videos

Building a Tool Calling Agent with Langgraph Stategraph - Part ...

January 25, 2026

LangGraph Explained for Beginners - YouTube

August 22, 2025

LangGraph Crash Course #15 - What is StateGraph? - YouTube

Deep Dive into LangGraph – State & State Schema - YouTube

October 12, 2025

LangGraph Complete Course for Beginners – Complex AI Agents with ...

LangGraph state - YouTube

reference.langchain.com › python › langgraph › graphs

graphs | langgraph | LangChain Reference

Python API reference for graphs in langgraph. Part of the LangChain ecosystem.

reference.langchain.com › javascript › classes › _langchain_langgraph.index.CompiledStateGraph.html

CompiledStateGraph | langchain.js

CompiledStateGraph · Defined in remotes/langchain-ai/langgraphjs/main/libs/langgraph-core/src/graph/state.ts:1248 · constructor · ~ Node · Return · Type ~ Node · Type ~ Run · Input ~ Run · Output auto · Validate builder cache? channels checkpointer? config? debug description?

github.com › langchain-ai › langgraph › issues › 5000

Make `StateGraph` and `CompiledStateGraph` more type safe · Issue #5000 · langchain-ai/langgraph

June 9, 2025 - Graphs should be generic on: StateT InputT OutputT ContextT We should thus be able to: Check that node signatures are correct (accept state: StateT and runtime: ContextT) Check the input to invoke/stream takes the right type (either Stat...

Author Sydney Runkle(sydney-runkle)

baihezi.com › mirrors › langgraph › reference › graphs › index.html

Graphs - LangGraph

msgs1 = [HumanMessage(content="Hello", id="1")] msgs2 = [AIMessage(content="Hi there!", id="2")] add_messages(msgs1, msgs2) # [HumanMessage(content="Hello", id="1"), AIMessage(content="Hi there!", id="2")] msgs1 = [HumanMessage(content="Hello", id="1")] msgs2 = [HumanMessage(content="Hello again", id="1")] add_messages(msgs1, msgs2) # [HumanMessage(content="Hello again", id="1")] from typing import Annotated from typing_extensions import TypedDict from langgraph.graph import StateGraph class State(TypedDict): messages: Annotated[list, add_messages] builder = StateGraph(State) builder.add_node("chatbot", lambda state: {"messages": [("assistant", "Hello")]}) builder.set_entry_point("chatbot") builder.set_finish_point("chatbot") graph = builder.compile() graph.invoke({}) # {'messages': [AIMessage(content='Hello', id='f657fb65-b6af-4790-a5b5-1d266a2ed26e')]}

medium.com › ai-agents › langgraph-for-beginners-part-4-stategraph-794004555369

LangGraph for Beginners, Part 4: StateGraph. | by Santosh Rout | AI Agents | Medium

October 26, 2024 - # Import equired packages from langgraph.graph import StateGraph, START, END from typing_extensions import TypedDict

github.com › langchain-ai › langgraph › issues › 3418

Subgraph state update contains the entire CompiledStateGraph in it which is not serializable for the astream events · Issue #3418 · langchain-ai/langgraph

February 13, 2025 - class LookupGraph(BaseGraphWrapper): """Graph wrapper for the lookup tool, used to also add a function to get the prompt description""" name: str = "Lookup Tool" description: str = "Tool used to retrieve information needed to answer any input question" graph: StateGraph = None input_schema = LookupInput def get_graph(self): """Compile the graph and return it""" graph = StateGraph(state_schema=LookupState) graph.add_node("retriever", retriever_node) graph.add_node("filter_documents", FilterGraph.graph) graph.add_node("replace_urls", replace_urls_node) graph.add_node("generate_answer", CollapseG

Author DebienRuben

Find elsewhere

Google Bing Mojeek

github.com › langchain-ai › langgraph › issues › 2080

Copy of CompiledStateGraph request mandatory to explicit "update={}" · Issue #2080 · langchain-ai/langgraph

October 11, 2024 - Yesterday 10/10, while updating langgraph to latest version I had this exception on my code.

Author SimoneDArco

docs.langchain.com › langgraph-platform › graph-rebuild

Rebuild graph at runtime - Docs by LangChain

from langchain_openai import ChatOpenAI from langgraph.graph import END, START, MessageGraph model = ChatOpenAI(temperature=0) graph_workflow = MessageGraph() graph_workflow.add_node("agent", model) graph_workflow.add_edge("agent", END) graph_workflow.add_edge(START, "agent") agent = graph_workflow.compile() To make the server aware of your graph, you need to specify a path to the variable that contains the CompiledStateGraph instance in your LangGraph API configuration (langgraph.json), e.g.: Copy ·

reference.langchain.com › python › langgraph › graph › state › StateGraph

StateGraph | langgraph | LangChain Reference

Compiles the StateGraph into a CompiledStateGraph object.

reference.langchain.com › python › langgraph › graph › state › StateGraph › compile

compile | langgraph | LangChain Reference

Compiles the StateGraph into a CompiledStateGraph object.

reference.langchain.com › python › langgraph › graph › state › CompiledStateGraph

CompiledStateGraph | langgraph | LangChain Reference

CompiledStateGraph( self, *, builder: StateGraph[StateT, ContextT, InputT, OutputT], schema_to_mapper:

mlflow.org › blog › langgraph-model-from-code

LangGraph with Model From Code | MLflow

August 6, 2024 - %%writefile graph.py # omit this line if directly creating this file; this command is purely for running within Jupyter from langchain_openai import ChatOpenAI from langgraph.graph import StateGraph, START, END from langgraph.graph.message import add_messages from langgraph.graph.state import CompiledStateGraph import mlflow import os from typing import TypedDict, Annotated def load_graph() -> CompiledStateGraph: """Create example chatbot from LangGraph Quickstart.""" assert "OPENAI_API_KEY" in os.environ, "Please set the OPENAI_API_KEY environment variable." class State(TypedDict): messages:

reference.langchain.com › javascript › interfaces › _langchain_langgraph.index.CompiledGraph.html

CompiledGraph | langchain.js

CompiledStateGraph · Defined in remotes/langchain-ai/langgraphjs/main/libs/langgraph-core/src/graph/graph.ts:572 · ~ Node · Return · Type ~ Node · Type ~ Run · Input ~ Run · Output auto · Validate builder cache? channels checkpointer? config? debug input ·

reddit.com › r/langchain › how to add an agent in a langgraph as a node? specifically agent created out of create_sql_agent

r/LangChain on Reddit: How to add an Agent in a LangGraph as a node? Specifically agent created out of create_sql_agent

June 17, 2024 -

I am trying to use the helper method create_sql_agent to create an agent and add it in a simple graph to create a database team. I tried to see if SQL tutorial can be repurposed.

The graph structure that I wanted to design is very simple. A supervisor that delegates to a SQL Team.

I tried following https://python.langchain.com/v0.2/docs/tutorials/sql_qa/#agents as suggested by u/hwchase17 for one of the previous question. However, it uses the AgentExecutor instead of using langgraph as Agent Executor.

There are examples of connecting to SQL database in the customer support chat bot tutorial. How we are not able to leverage the advantages that we get by using an SQL Agent namely:

Recovering from errors and regenerating query correctly.
Querying database multiple times.
Save Tokens by looking into schema etc.

If there are any notebooks or code that you could point to that would be great.

I started learning LangGraph for the promise of composing and using agents. If this is not doable with critical agents like SQL Database, then that defeats the purpose. Also that AgentExecutor is deprecated, it would be great if some of these tutorials are updated to use LangGraph as AgentExecutor / ChatExecutor.

Hey u/copp , you can write whatever code you'd like within a node, including delegating to the existing `create_sql_agent` method. You can start from some of the code in the introductory guide: https://langchain-ai.github.io/langgraph/tutorials/introduction/#part-1-build-a-basic-chatbot Then initialize and call out to your prebuilt SQL agent instead of simply invoking an LLM.

I am also facing the same problem, I am using: from langgraph.prebuilt import create_react_agent to create a react agent but this react agent is already complied langgraph.graph.state.CompiledStateGraph And now, I wanna have two more react agents and add those agents in the graph but there is no way to the best of my knowledge. react_agent_1 = create_react_agent(model, tools=tools, messages_modifier=prompt) react_agent_2 = create_react_agent(model, tools=tools, messages_modifier=prompt) react_agent_3 = create_react_agent(model, tools=tools, messages_modifier=prompt) Now I wanna have the react_agent_1 as the parent/supervisor agent andreact_agent_2 and andreact_agent_3as child agents. Now, how can I add these two agents in the already compiled graph as the other two are agents are also the complied graphs.

medium.com › @gitmaxd › understanding-state-in-langgraph-a-comprehensive-guide-191462220997

Understanding State in LangGraph: A Beginners Guide 🚀 | by Rick Garcia | Medium

August 17, 2024 - In this article, we’ll cover the concept of state in LangGraph at an introductory level, exploring its implementation, manipulation, and practical applications.

reference.langchain.com › javascript › langchain-langgraph › index › CompiledStateGraph

CompiledStateGraph | @langchain/langgraph | LangChain Reference

Validates the graph structure to ensure it is well-formed.MwithConfig→ CompiledStateGraph<S, U, N, I, O, C, NodeReturnType, InterruptType, WriterType>

Microsoft Learn

learn.microsoft.com › en-us › python › api › azure-ai-agentserver-langgraph › azure.ai.agentserver.langgraph.langgraph.langgraphadapter

azure.ai.agentserver.langgraph.langgraph.LangGraphAdapter class | Microsoft Learn

Adapter for LangGraph Agent. Initialize the LangGraphAdapter with a CompiledStateGraph or a function that returns one.