Dynamic Tools

1"""
2Dynamic Tools
3=============================
4
5Dynamic Tools.
6"""
7
8from datetime import datetime
9
10from kern.agent import Agent
11from kern.models.openai import OpenAIResponses
12from kern.run import RunContext
13
14
15def get_runtime_tools(run_context: RunContext):
16    """Return tools dynamically based on session state."""
17
18    def get_time() -> str:
19        return datetime.utcnow().isoformat()
20
21    def get_project() -> str:
22        project = (run_context.session_state or {}).get("project", "unknown")
23        return f"Current project: {project}"
24
25    return [get_time, get_project]
26
27
28# ---------------------------------------------------------------------------
29# Create Agent
30# ---------------------------------------------------------------------------
31agent = Agent(
32    name="Dynamic Tools Agent",
33    model=OpenAIResponses(id="gpt-5.2"),
34    tools=get_runtime_tools,
35)
36
37# ---------------------------------------------------------------------------
38# Run Agent
39# ---------------------------------------------------------------------------
40if __name__ == "__main__":
41    agent.print_response(
42        "Use available tools to report current context.",
43        session_state={"project": "cookbook-restructure"},
44        stream=True,
45    )

1# Clone and setup repo
2git clone https://github.com/kern-ai/kern.git
3cd kern/cookbook/02_agents/15_dependencies
4
5# Create and activate virtual environment
6./scripts/demo_setup.sh
7source .venvs/demo/bin/activate
8
9python dynamic_tools.py