Gate
A deterministic check that runs on output, code rather than a model's opinion. Four of them: match-set (every citation in the answer must be one that was actually retrieved), quote-verbatim (a quoted passage must appear word for word in the retrieved source), confidence-floor (a claim below the threshold is held rather than passed through), and closed-world-URL (a link from a domain outside the allow-list does not render).
Research and verification
See also
- Closed worldThe finite, published list of sources research is allowed to fetch from, ranked by authority: courts and legislation first, then regulators and official publishers. It covers the United Kingdom, Ireland, the European Union and the ECHR today, plus international bodies, and it grows as sources are certified. It is not the limit of where the product can be used: a matter in a jurisdiction with no approved list still runs, at open-web quality with the same gates, and the output says so. Paywalled subscription databases are not read.
- VerdictThe state of an authority after checking. Three values only: verified (the citation resolves to a real source and the text matches), needs a check (nobody has confirmed it yet, or it could not be confirmed), and not found (it was looked for and it does not exist).