Reject Member Tool Call

1"""Team HITL: Rejecting a member agent tool call.
2
3This example demonstrates how the team handles rejection of a tool
4call. After rejection, the team continues and the model responds
5acknowledging the rejection.
6"""
7
8from kern.agent import Agent
9from kern.models.openai import OpenAIResponses
10from kern.team.team import Team
11from kern.tools import tool
12
13
14# ---------------------------------------------------------------------------
15# Tools
16# ---------------------------------------------------------------------------
17@tool(requires_confirmation=True)
18def delete_user_account(username: str) -> str:
19    """Permanently delete a user account and all associated data.
20
21    Args:
22        username (str): Username of the account to delete
23    """
24    return f"Account {username} has been permanently deleted"
25
26
27# ---------------------------------------------------------------------------
28# Create Members
29# ---------------------------------------------------------------------------
30admin_agent = Agent(
31    name="Admin Agent",
32    role="Handles account administration tasks",
33    model=OpenAIResponses(id="gpt-5.2-mini"),
34    tools=[delete_user_account],
35)
36
37# ---------------------------------------------------------------------------
38# Create Team
39# ---------------------------------------------------------------------------
40team = Team(
41    name="Admin Team",
42    members=[admin_agent],
43    model=OpenAIResponses(id="gpt-5.2-mini"),
44)
45
46# ---------------------------------------------------------------------------
47# Run Team
48# ---------------------------------------------------------------------------
49if __name__ == "__main__":
50    response = team.run("Delete the account for user 'jsmith'")
51
52    if response.is_paused:
53        print("Team paused - requires confirmation")
54        for req in response.requirements:
55            if req.needs_confirmation:
56                print(f"  Tool: {req.tool_execution.tool_name}")
57                print(f"  Args: {req.tool_execution.tool_args}")
58
59                # Reject the dangerous operation
60                req.reject(note="Account deletion requires manager approval first")
61
62        response = team.continue_run(response)
63        print(f"Result: {response.content}")
64    else:
65        print(f"Result: {response.content}")

1# Clone and setup repo
2git clone https://github.com/kern-ai/kern.git
3cd kern/cookbook/03_teams/human_in_the_loop
4
5# Create and activate virtual environment
6./scripts/demo_setup.sh
7source .venvs/demo/bin/activate
8
9python confirmation_rejected.py