Tool Call Limit

1"""
2Tool Call Limit
3=============================
4
5This cookbook shows how to use tool call limit to control the number of tool calls an agent can make.
6"""
7
8from kern.agent import Agent
9from kern.models.openai import OpenAIResponses
10from kern.tools.yfinance import YFinanceTools
11
12# ---------------------------------------------------------------------------
13# Create Agent
14# ---------------------------------------------------------------------------
15agent = Agent(
16    model=OpenAIResponses(id="gpt-5-mini"),
17    tools=[YFinanceTools()],
18    tool_call_limit=1,
19)
20
21# ---------------------------------------------------------------------------
22# Run Agent
23# ---------------------------------------------------------------------------
24if __name__ == "__main__":
25    # It should only call the first tool and fail to call the second tool.
26    agent.print_response(
27        "Find me the current price of TSLA, then after that find me the latest news about Tesla.",
28        stream=True,
29    )

1# Clone and setup repo
2git clone https://github.com/kern-ai/kern.git
3cd kern/cookbook/02_agents/04_tools
4
5# Create and activate virtual environment
6./scripts/demo_setup.sh
7source .venvs/demo/bin/activate
8
9python tool_call_limit.py