Searches for documents where withinCommentPeriod=true, sorted by
soonest reported closing date (ascending commentEndDate). Page 1 holds
the earliest metadata dates; verify the notice before planning a submission. Returns document IDs, titles,
agencies, document types and subtypes, Federal Register document
numbers, comment deadlines, docket IDs, and the API-true total_open.
comment_deadline is the Regulations.gov metadata date in Eastern time
(e.g. 'Oct 22, 2026 11:59 PM ET'); comment_end_date_utc preserves its UTC
instant. comment_deadline_verification links to the notice/docket. Read
DATES, eligibility, and later extensions before treating it as controlling;
if those sources are unavailable, the controlling date is not established.
When more documents exist, truncated=true and next_page_number gives
the page that continues the list (later pages have later reported dates).

page_size: 5-100 documents per page (default 25). page_number: 1-40.

Default searches FAR, DARS, GSA, SBA, OFPP, DOD, NASA, VA in a single
comma-joined query. Pass agency_ids to narrow or expand the scope. An
empty list is rejected; pass None to use the defaults. Most open DOD and
VA documents are Paperwork Reduction Act and Privacy Act notices; for
rules only, pass document_type='Proposed Rule' (exact casing).