The Signal runs on the AI-Generative Platform.See the platform →

Prompt

Catch the promise your notes don’t support

Why now: United’s announcement illustrates why a narrow statement should not become a broader claim.

Prompted by today's lead: Unauthorized AI booking agents face restrictions, United says

What you'll need

  • A short, non-sensitive draft notice or message.
  • The source notes the draft is supposed to reflect.

Steps

  1. Paste your source notes and draft together, clearly labeling each.
  2. Run the prompt to mark claims that the notes do not support.
  3. Check each marked passage against the notes before revising or sending.

The prompt

Compare the draft with the source notes below. Return only the draft, enclosing every unsupported claim in parentheses prefixed with 'unsupported:'. Treat a stronger guarantee, broader scope or added detail as unsupported unless the notes establish it. Preserve all other wording. Do not rewrite the draft, add facts or provide commentary. Use plain text with no Markdown formatting, and keep the output under 150 words.

[paste source notes and draft]

What you should get

Only the draft appears, with unsupported guarantees and added policy claims marked in parentheses beginning 'unsupported:'. Supported wording stays unchanged. The result uses plain text and fewer than 150 words.

Tested example: Tested on sample input

Input

Source notes: The hobby shop plans to dispatch preorders on Friday if the packaging arrives. Collection is available after a pickup message. Delivery timing depends on the carrier. No refund policy is included in these notes.
Draft: All preorders will arrive by Friday. You can collect your order as soon as you receive a pickup message. Every order includes free returns.

Output

(unsupported: All preorders will arrive by Friday.) You can collect your order as soon as you receive a pickup message. (unsupported: Every order includes free returns.)

How we tested it: How we checked this: an AI model ran this prompt on the sample input on November 12, 2026, and a separate model call checked the result against what the Move promises.