LangChain Integration

```python
from reacter_openapitools import LangChainAdapter
from langchain_anthropic import ChatAnthropic
from langgraph.prebuilt import create_react_agent
from langchain_core.messages import HumanMessage
 
# Initialize the language model
model = ChatAnthropic(
    model_name="claude-3-sonnet-20240229",
    api_key="your-anthropic-api-key"
)
 
# Initialize the adapter
adapter = LangChainAdapter(api_key="your OpenAPI Tools Apikey - https://openapitools.com/dashboard/settings")
 
# Get tools in LangChain format
tools = adapter.get_langchain_tools()
 
# Create a LangChain agent with tools
agent_executor = create_react_agent(model, tools)
 
# Use the agent
response = agent_executor.invoke({
    "messages": [HumanMessage(content="Can you generate an OTP for me?")]
})
print(response["messages"])