Check — which published factor is each of your numbers, and is it still right?

Open (no key), up to 25 rows per request, limited per IP. Send the factors your inventory already uses, each as a description, the value AS TYPED (a string keeps its precision: "0.207" matches anything that rounds to it) and the unit as written. Each row comes back with the published factor it matches (source, edition, line), a status (current, outdated, fix, review, unverifiable, notcomparable), findings such as an old edition, old IPCC warming values, a 1,000x unit slip, net instead of gross calorific value or an upstream (WTT) factor used for combustion, and the current value to use instead. UK government factors carry every edition 2019-2026 except 2021; other sources are current-edition only, so a non-UK value can be identified but not yet called out of date. Nothing is substituted, and the request body is neither logged nor stored.