Reference · Snippet · python

Minimal agent loop (Python)

Last updated Jul 17, 2026

agentsopenaitools

MAX_STEPS = 5
messages = [{"role": "user", "content": goal}]

for _ in range(MAX_STEPS):
    resp = client.chat.completions.create(
        model="gpt-4o-mini",
        messages=messages,
        tools=tools,
    )
    msg = resp.choices[0].message
    if not msg.tool_calls:
        return msg.content  # final answer
    messages.append(msg)
    for call in msg.tool_calls:
        result = run_tool(call.function.name, call.function.arguments)
        messages.append({"role": "tool", "tool_call_id": call.id, "content": result})