Joeven — Learn Autonomous AI Agents

Python loads on first run

import json

def search(q):
    hits = {"rain": "bring a coat", "python": "use a venv"}
    return hits.get(q, "no hits")

def finish(text):
    return {"final": text}

TOOLS = {
    "search": search,
    "finish": finish,
}

def parse_action(text):
    try:
        data = json.loads(text)
    except json.JSONDecodeError:
        return {"ok": False, "error": "bad_json"}
    tool = data.get("tool")
    args = data.get("args") if isinstance(data.get("args"), dict) else {}
    if tool not in TOOLS:
        return {"ok": False, "error": "unknown_tool"}
    return {"ok": True, "tool": tool, "args": args}

def make_model(lines):
    i = {"n": 0}

def fake_model(_transcript):
        if i["n"] >= len(lines):
            return '{"tool": "finish", "args": {"text": "stop"}}'
        text = lines[i["n"]]
        i["n"] += 1
        return text

return fake_model

def run_agent(goal, lines, max_steps=6):
    transcript = [{"role": "user", "content": goal}]
    model = make_model(lines)
    for step in range(1, max_steps + 1):
        raw = model(transcript)
        print("step", step, "model", raw)
        parsed = parse_action(raw)
        transcript.append({"role": "model", "content": raw})
        if not parsed["ok"]:
            obs = {"error": parsed["error"]}
            transcript.append({"role": "tool", "content": obs})
            print("  observe", obs)
            continue
        tool = parsed["tool"]
        args = parsed["args"]
        try:
            result = TOOLS[tool](**args)
        except Exception as exc:
            result = {"error": type(exc).__name__, "detail": str(exc)}
        transcript.append({"role": "tool", "name": tool, "content": result})
        print("  tool", tool, "->", result)
        if tool == "finish":
            print("done")
            break
    else:
        print("stop: budget")
    print("--- transcript ---")
    for row in transcript:
        print(row)
    return transcript

script = [
    '{"tool": "search", "args": {"q": "rain"}}',
    '{"tool": "finish", "args": {"text": "Bring a coat."}}',
]
print("=== run 1 ===")
run_agent("Should I take a coat?", script, max_steps=6)
print("=== run 2 budget ===")
run_agent("Should I take a coat?", script, max_steps=1)

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