fr When the rule changed, and whether you can still comment.
1.01M documents since 1994 — rules, proposed rules and notices — with the issuing agency, the effective date and the comment deadline as fields.
search 2 credits · free sample: PFAS drinking water
What it answers
What an agency did
Agency, document type and date are filters; the action kind is extracted.
What is still open
Comment deadlines are dates, so what is still open for comment is a query.
Who it hits
Affected parties are extracted, so a rule can be matched to an industry.
Three calls
Straight from the gateway’s own self-description — these are the calls it suggests first.
Rules from one agency
POST /v1/fr/search {"query": "PFAS drinking water", "filters": {"doc_type": "Rule"}} Proposed rules still open for comment
POST /v1/fr/search {"query": "出口管制 半导体", "filters": {"doc_type": "Proposed Rule", "comments_close_on": {"gte": "2026-10-09"}}} Read one
GET /v1/fr/read/fr:2024-07332 Narrow it — action_kind · agencies · doc_type · pub_date
What it will not do
Words, not meaning: this domain has no vectors either. For a formal citation, go back to the Federal Register original.
- Division of labour with us_law: us_law holds the provisions in force (clause-level CFR / USC); fr holds the notices themselves (who changed what, when).
- doc_type uses the official capitalisation (Rule / Proposed Rule / Notice / Presidential Document / Uncategorized Document / Correction / Sunshine Act Document); lowercase 'rule' matches nothing.
- Rules open for comment: filters.comments_close_on={"gte": "<today>"}; upcoming effect: a range on effective_on.
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