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Constraints (in prompting)

Vincoli (nel prompting)

Constraints, in prompting, are specifications of what the AI must avoid, respect, or mandatorily include in the output. Contrary to intuition, constraints don't limit the AI, they guide it. A prompt without constraints produces generic and often unusable output; a prompt with clear constraints produces output calibrated to real needs.

Definition

Constraints can concern tone ("professional but not formal"), length ("2 pages maximum, 500 words minimum"), content to exclude ("no specific ROI promises", "no technical jargon"), mandatory content ("always include a final call to action"), a forbidden format ("no bullet lists in the main section"), or domain restrictions ("refer only to the data provided, don't invent").

In Grace's evaluation system, Constraints are one of the 7 dimensions scored, with a weight that varies from scenario to scenario (15% in the first scenario of the catalog, for example). Defining multiple, specific constraints instead of just one or none is one of the main things separating mediocre prompts from excellent ones, regardless of the exact weight the rubric assigns.

How it's used in Grace

In Grace, Constraints are one of the dimensions scored on every scenario, with a weight that changes case by case. The AI judge rewards multiple, specific constraints: tone, length, what to exclude, what must be included. It is often the dimension where users improve fastest after reading the feedback from their first scenarios.

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