Drill · lap 2 · 1/10 · BED-101 · Predict the roles after two tool round trips

[akash-coded]

1 of 10 · BED-101 · Predict the roles after two tool round trips

bedrock · easy · predict · ~8 min · no AWS account

No code to write. A correctly written loop runs this conversation:

1. The user asks "Is XY7Q2M refundable?"
2. The model requests get_booking. The loop appends the model's message, runs the tool, appends the result.
3. The model requests get_fare_rules. Same again.
4. The model answers.

Your answer

What is the sequence of role values in messages when the loop finishes? One list, in order.

/drill BED-101

```python
answer = ["user", "..."]
```

What this proves

That you can see why the most common loop bug produces ['user', 'user'] — and why the API rejects it — before you have written a line.

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