List + filter the general US law corpus
Statutes, regulations and federal executive instruments at title/chapter/part level, each with its official citation, status, effective date, the official government source URL, and a many-to-many classification into 33 branches and 227 subcategories. Records LINK to the official text; they do not reproduce it.
METERED ON RECORDS SERVED, not just on requests. A request cap stops a fast client; a record cap stops a patient one, and only the second is priced against the size of the corpus. Every response carries meta.record_budget with what is left in the day and 30-day windows; exhausting it returns 429 record_budget_exceeded (distinct from 429 rate_limited).
PRODUCT SCOPE: this endpoint belongs to the US Law Platform. A key licensed only for AI Law Tracker (product: ai_law) is NOT refused here — it is served at the PUBLIC (keyless) capability level, the same few records any anonymous caller gets. The response headers say so explicitly: X-ALT-Product (what your key holds), X-ALT-Product-Surface (us_law) and X-ALT-Product-Scope (in_product | out_of_product). Your request rate and daily/monthly quota are NEVER degraded — those are metered per key wherever you call. What degrades is capability: page size, pagination depth, field envelope and the record budget.
Request
- Base URL: https://ai-law-tracker.com/api/v1
- URL: https://ai-law-tracker.com/api/v1/us-law
- Auth: one of:
- none
- API key in header X-API-Key
- HTTP bearer
Query parameters
PRIMARY branch id from /us-law/taxonomy. Matches only records whose primary classification is this branch - narrower than branch_any, and usually not what you want for a coverage question.
Branch id matched against ANY assignment, primary or secondary. Records are genuinely multi-branch (HIPAA is health law AND privacy law), so this is the complete answer: branch=health_law matches 1,942 records, branch_any=health_law matches 2,852.
Subcategory id matched against ANY assignment, primary or secondary.
Subcategory id, primary classification only.
Jurisdiction slug, e.g. california. Comma-separated for several: california,new-york.
federal and/or state, comma-separated.
Document KIND: statute, regulation, executive_order, proclamation, agency_guidance, constitution, presidential_memorandum... Comma-separated for several. SCARCE types (executive orders, proclamations, agency guidance and other presidential instruments - about 3% of the corpus) are content-gated below the top tiers: the response is a small real SAMPLE, reported as meta.sampled with meta.sampled_reason "scarce_instrument_type", never a silent truncation. Listing a scarce type alongside a common one still arms that gate.
in_force, superseded, repealed, enacted, unknown. Comma-separated for several.
Operative law only (or only non-operative).
Whether the instrument carries the force of law. false selects the guidance-type corpus.
Effective on or after this date (YYYY-MM-DD).
Records WE re-fetched on or after this time. This is our freshness stamp, NOT a claim that the law changed then - for that see /us-law/records/{record_uid}/history.
Records WE re-verified on or after this time. Same caveat as retrieved_since.
Exact citation match, case-insensitive - e.g. 45 CFR Part 164. Use citation_prefix to widen.
Citation starts-with, e.g. 45 CFR for everything under that part.
Exact identifier match, e.g. Pub. L. 117-58.
Fetch specific records by uid; comma-separated, up to 100. The batch form of /us-law/records/{record_uid}.
Substring match on title / short title / citation. For ranked full text over the summary as well, use /us-law/search.
Clamped to your tier cap; the clamp is reported in meta.gated.
Clamped to your tier pagination depth.
Response
Matching records, plus the record-budget state.
Changes
No recorded changes to this operation across all 1 revision of this API.