Test a prompt before relying on it

I am about to rely on this prompt for {{stakes}}:

{{prompt}}

Give me the test inputs most likely to embarrass it: empty, enormous, ambiguous,
adversarial, and the case that looks routine but sits on a boundary. For each, what
a bad output would look like.

Then say which single failure would be worst given the stakes, and whether the
prompt should guard against it or a human should.

What to fill in

{{prompt}}

The prompt — e.g. Paste it

{{stakes}}

What it's used for — e.g. customer-facing support replies