ChatAgent dose not support multi-input tool

[wjs2063]

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Example Code

from apps.entities.tools.tavily.tavily_search import tavily_search_tool
from langchain.agents import initialize_agent, AgentType, AgentExecutor
from langgraph.prebuilt import create_react_agent
from apps.entities.tools.utils.etc import current_time_tool, get_current_date
from langchain.agents import load_tools
from langchain_core.tools import Tool, tool, StructuredTool
from langchain_community.tools.tavily_search import TavilySearchResults
from dotenv import load_dotenv

load_dotenv()

chat_model_with_tool = ChatOpenAI(model="gpt-4o", temperature=0.5)
tavily_search_tool = TavilySearchResults(max_results=2, verbose=True)

@tool
def get_current_date() -> str:
    """
    Returns current time in 현재 날짜 : XXXX년 XX월 XX일 XX시 XX분
    """
    _now = datetime.now()
    return f"현재 날짜 : {_now.year}년 {_now.month}월 {_now.day}일 {_now.hour}시 {_now.minute}분"


tools = [tavily_search_tool, get_current_date]

tavily_agent = initialize_agent(
    llm=chat_model_with_tool,
    tools=tools,
    agent=AgentType.CHAT_ZERO_SHOT_REACT_DESCRIPTION,
    verbose=True,
    handler_parsing_error=True,
)

response = tavily_agent.invoke(input="tell me current time")
print(response)

Description

used two tools in my code (tavily & custom tools(get_current_time)

after execute my code, error occured!

raise ValueError(

ValueError: ChatAgent does not support multi-input tool get_current_date.

System Info

[tool.poetry.dependencies]
python = ">=3.12,<3.13"
fastapi = "^0.115.8"
pytest = "^8.3.4"
langchain = "^0.3.18"
langchain-core = "^0.3.34"
pydantic = {extras = ["email"], version = "^2.10.6"}
redis = "^5.2.1"
tortoise-orm = "^0.24.0"
langchain-community = "^0.3.17"
langchain-experimental = "^0.3.4"
langchain-openai = "^0.3.4"
langchain-redis = "^0.1.2"
pymupdf = "^1.25.3"
spacy = "^3.8.4"
tiktoken = "^0.8.0"
chromadb = "^0.6.3"
langchain-chroma = "^0.2.1"
wikipedia = "^1.4.0"
black = "^25.1.0"
chainlit = "^2.2.0"
langchain-milvus = "^0.1.8"
python-jose = {extras = ["cryptography"], version = "^3.3.0"}
asyncpg = "^0.30.0"
bcrypt = "4.0.1"
passlib = "^1.7.4"
types-passlib = "^1.7.7.20241221"
types-python-jose = "^3.3.4.20240106"
langgraph = "^0.2.71"
celery = {extras = ["redis"], version = "^5.4.0"}
psycopg = "^3.2.4"
psycopg2-binary = "^2.9.10"