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regulatory-research
Source-linked US federal regulations: CFR provision history, obligations, rules, comments.
Tools
10
GitHub stars
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Installs / wk
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Licence
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Transport
streamable-http
Last checked
20h ago
Tools & capabilities
10 toolsRead from the running server on 20h ago.
get_provision_history
read-only
canonical_id*
Documented change history for a CFR provision by canonical id (e.g. "21-cfr-1304.04(a)"): before/after text, computed redline, observed dates, and candidate final rules. 404 when t… Documented change history for a CFR provision by canonical id (e.g. "21-cfr-1304.04(a)"): before/after text, computed redline, observed dates, and candidate final rules. 404 when the provision is not in the documented-change set — absence of a documented change is not a claim that nothing changed. No API key required.
get_requirement
read-only
id*
Detail for one extracted obligation by id, including its source rule and citation URL. Requires an API key. Detail for one extracted obligation by id, including its source rule and citation URL. Requires an API key.
get_rule_comments
read-only
doc*offset
Public comments for a Federal Register document (organization, title, date, body where available). Coverage is partial and stated in the response. Requires an API key. Public comments for a Federal Register document (organization, title, date, body where available). Coverage is partial and stated in the response. Requires an API key.
get_stats
read-only
Aggregate corpus statistics: documents, obligations, pairs, agencies, coverage dates. No API key required. Aggregate corpus statistics: documents, obligations, pairs, agencies, coverage dates. No API key required.
list_obligations
read-only
qpagelimitagencydeontic
List extracted regulatory obligations ("who must do what") with filters: agency, deontic class, free text. Obligations are machine-extracted with quality tiers; they are not legal… List extracted regulatory obligations ("who must do what") with filters: agency, deontic class, free text. Obligations are machine-extracted with quality tiers; they are not legal advice. Requires an API key.
list_rules
read-only
pagetypelimitagencydocketpathway
List Federal Register documents with filters: agency slug, document type, rulemaking pathway (interim_final/temporary/direct_final = notice-and-comment bypass classes), or docket i… List Federal Register documents with filters: agency slug, document type, rulemaking pathway (interim_final/temporary/direct_final = notice-and-comment bypass classes), or docket id. Requires an API key.
lookup_provision
read-only
q*as_of
Look up a CFR provision by citation (e.g. "21 CFR 1304.04") or by an exact quotation, optionally as of a past date. Returns the provision text with a ProvisionEvidence object (sour… Look up a CFR provision by citation (e.g. "21 CFR 1304.04") or by an exact quotation, optionally as of a past date. Returns the provision text with a ProvisionEvidence object (source, snapshot date, hashes). Explicitly reports ambiguity or no-match instead of guessing. Requires a free API key.
recent_cfr_changes
read-only
limit
Most recent detected changes to CFR text (title, part, name, dates), newest first. No API key required. Most recent detected changes to CFR text (title, part, name, dates), newest first. No API key required.
rules_amending
read-only
part*limittitle*section
Which final rules amend a CFR part or section, read from each rule's own amendatory instructions ("Amend § 52.2120 by..."). Returns the rules, the sections each addresses, and date… Which final rules amend a CFR part or section, read from each rule's own amendatory instructions ("Amend § 52.2120 by..."). Returns the rules, the sections each addresses, and dates. This reports what a rule SAYS it amends — it is not an attribution of any observed text change to that rule. Covers 2020-present; absence means not indexed, not that no rule amended it. No API key required.
search_regulations
read-only
q*tabpagelimit