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Neptune Open Cypher QA Chain

This QA chain queries Neptune graph database using openCypher and returns human readable response

from langchain.graphs.neptune_graph import NeptuneGraph


host = "<neptune-host>"
port = 80
use_https = False

graph = NeptuneGraph(host=host, port=port, use_https=use_https)

API Reference:

from langchain.chat_models import ChatOpenAI
from langchain.chains.graph_qa.neptune_cypher import NeptuneOpenCypherQAChain

llm = ChatOpenAI(temperature=0, model="gpt-4")

chain = NeptuneOpenCypherQAChain.from_llm(llm=llm, graph=graph)

chain.run("how many outgoing routes does the Austin airport have?")

API Reference: