The product is the refusal. If it isn't in the letter or the law, it isn't on the screen.
Holdline uses AI where it helps (reading, labeling, judging) and code everywhere a mistake could cost a family their services.
Honest scope: 9 fictional letters written by the team across 3 notice types, including a letter with no deadline and one with no date at all. The guarantees are re-checked by the eval independently of the app. Guards blocked 5 incorrect AI statements during the run. Full results ↗
Real mistakes the guards caught
These came from live runs. Nemotron is good. Ultra judged every required part correctly. But a fluent summary can still move a deadline's starting point or change its tense. Those are exactly the mistakes that cost families their rights, so code checks for them on every line.
The eight guards
Numbers and dates must exist
A summary line is removed if it contains a number, amount, or date that is not in the letter sentences it cites.
Deadlines keep their starting point
“90 days from today” and “90 days from the date of this notice” share a number but not a date. A time word like “today”, “tomorrow”, or “from now” that the letter does not use removes the line.
Nothing “already ended” unless it did
“We ended your coverage” tells a family it's too late. If the letter says coverage “will end”, a line that says “ended”, “stopped”, “terminated”, or “denied” is removed.
Every finding points to a sentence
Nemotron Ultra must name the sentence numbers behind each finding. A claim pointing to a sentence that doesn't exist is rejected and counted.
Date labels are double-checked
If the model calls a date a deadline but the sentence has no action word, or calls it a response date when the sentence is about keeping services, code overrules it.
Fake citations are caught
Every CFR section a letter cites is looked up on eCFR. Sections that don't exist, or exist only as “[Reserved]” with no rule in them, are struck through.
Links only from trusted domains
Search is locked to an allowlist per notice type (ecfr.gov, parent centers, legal aid, state .gov), and every returned URL is re-checked before it's shown.
Law quoted word for word
Every regulation clause in the app is matched against the live eCFR text before it's shown. A build check fails if any quote drifts from the official text.
See the guards work on a real letter.
Check it in about four seconds. Nothing is stored.