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When using `create_xml_agent` or `create_json_chat_agent` to create a agent, and the function corresponding to the tool is a parameterless function, the `XMLAgentOutputParser` or `JSONAgentOutputParser` will parse the tool input into an empty string, `BaseTool` will parse it into a positional argument. So, the program will crash finally because we invoke a parameterless function but with a positional argument.Specially, below code will raise StopIteration in [_parse_input](https://github.com/langchain-ai/langchain/blob/master/libs/core/langchain_core/tools/base.py#L419) ```python from langchain import hub from langchain.agents import AgentExecutor, create_json_chat_agent, create_xml_agent from langchain_openai import ChatOpenAI prompt = hub.pull("hwchase17/react-chat-json") llm = ChatOpenAI() # agent = create_xml_agent(llm, tools, prompt) agent = create_json_chat_agent(llm, tools, prompt) agent_executor = AgentExecutor(agent=agent, tools=tools, verbose=True) agent_executor.invoke(......) ``` --------- Co-authored-by: Erick Friis <erick@langchain.dev> Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com> Co-authored-by: Chester Curme <chester.curme@gmail.com> |
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| .. | ||
| __init__.py | ||
| base.py | ||
| convert.py | ||
| render.py | ||
| retriever.py | ||
| simple.py | ||
| structured.py | ||