Fetch the authoritative text of any section of the US Code...
Fetch the authoritative text of any section of the US Code of Federal Regulations by title and section number — for example title 12, section 1026.43 returns Regulation Z’s ability-to-repay standards. Returns the canonical citation, section heading, full plain text, Federal Register source credit, the as-of date, and a link to the official eCFR page. An optional date parameter (YYYY-MM-DD) retrieves the historical text in force on that date, back to 2017. Data from the Electronic Code of Federal Regulations (US GPO / Office of the Federal Register), public domain, updated daily — verify regulatory citations against the authoritative source instead of relying on model memory.
Request
- Base URL: https://2s.io
- URL: https://2s.io/api/law/cfr-section
- Auth: API key in header PAYMENT-SIGNATURE
Query parameters
CFR title number, 1-50 (e.g. 12 for Banks and Banking, 40 for Protection of Environment).
Section identifier as "part.section", e.g. "1026.43" or "240.10b-5". The part is the digits before the dot.
Optional point-in-time date (YYYY-MM-DD). Returns the text in force on that date; coverage starts 2017-01-03. Defaults to the latest available text.
Try before you buy. Set to 1 for one free real call per endpoint per hour — no wallet or payment needed — to verify the endpoint before paying. Equivalent to sending the "X-2s-Trial: 1" request header. Listed only on operations that offer a trial; the others always answer 402.
Response
Changes
No recorded changes to this operation across all 1 revision of this API.