Every addendum change, before the deadline.

Takes the text of a bid addendum and pulls out every change, scope, cost, schedule, document revisions, deadline shifts. The output is a checklist of what's actually different and a flagged list of items you need to re-quote before the bid deadline.

No. The Digest reads the addendum text on its own. It tells you what the addendum changed; whether that change conflicts with a detail on Sheet A-301 you bid against is your job to verify. Use this to triage what's worth a re-read, not to skip the re-read.

Paste it. The tool is capped at 50K characters of input, which is roughly 80 pages of normal text. For addenda longer than that, paste the “what changed” section and the spec/drawing change list, those are the parts the Digest extracts from anyway.

It catches stated changes, anything the addendum explicitly calls out. It will not catch implicit changes (a revised drawing that contradicts an unrevised spec section, for example). The Digest is calibrated to surface what the GC wrote; what the GC accidentally left out is on you to spot.

Before. Run the Digest first to get a structured map of what's in the addendum, then do your own read against the map. Subs who read addenda cold often miss the same kinds of changes (scope reassignments, allowance/covered swaps, schedule shifts hidden in the cover letter). The Digest closes that gap.