Firecrawl + LangGraph

pip install -U langgraph langchain-firecrawl langchain-openai
export FIRECRAWL_API_KEY="fc-YOUR-API-KEY"
export OPENAI_API_KEY="sk-YOUR-API-KEY"

from langchain_firecrawl import FirecrawlSearch

search = FirecrawlSearch()
tools = [search]

print(search.invoke({"query": "LangGraph latest release", "limit": 3}))

from langchain_openai import ChatOpenAI
from langgraph.graph import StateGraph, MessagesState, START
from langgraph.prebuilt import ToolNode, tools_condition

llm = ChatOpenAI(model="gpt-6-luna").bind_tools(tools)

def agent(state: MessagesState):
    return {"messages": [llm.invoke(state["messages"])]}

graph = StateGraph(MessagesState)
graph.add_node("agent", agent)
graph.add_node("tools", ToolNode(tools))
graph.add_edge(START, "agent")
graph.add_conditional_edges("agent", tools_condition)
graph.add_edge("tools", "agent")
app = graph.compile()

result = app.invoke(
    {"messages": [{"role": "user", "content": "What changed in the latest LangGraph release? Cite your sources."}]}
)
print(result["messages"][-1].content)