--- license: cc0-1.0 language: [en] task_categories: [text-retrieval, question-answering] size_categories: [100K **Code & tools:** [github.com/docketx](https://github.com/docketx) — [legal-scrambler](https://github.com/docketx/legal-scrambler) pseudonymises a case file on your own hardware before a frontier model sees it; [claude-for-legal](https://github.com/docketx/claude-for-legal) is the Claude Code plugin (`docketx-open-law`) that loads these datasets and checks citations against them. **222,767 regulations** — 219,061 CFR sections and 3,706 appendices — across **all 49 titles of the Code of Federal Regulations**, each one as the agency publishes it. Statutes say what Congress wrote. The CFR says what the agencies actually require, and for most regulated work the regulation is the operative text: an employer's duty under 29 C.F.R. § 1910.1200, a broker's under 17 C.F.R. § 240.10b-5. This is the other half of federal law, and it is here verbatim — a paraphrase is not usable in a filing. ## What is in it | CFR title | name | records | of which appendices | source file last built by GPO | |--:|---|--:|--:|---| | 1 | General Provisions | 271 | 0 | 11-Aug-2026 20:55 | | 2 | Federal Financial Assistance | 1,577 | 70 | 19-Aug-2026 20:28 | | 3 | The President | 20 | 0 | 20-May-2024 17:04 | | 4 | Accounts | 221 | 1 | 19-Jul-2024 22:33 | | 5 | Administrative Personnel | 5,340 | 35 | 04-Sep-2026 20:29 | | 6 | Domestic Security | 589 | 11 | 13-Aug-2026 21:09 | | 7 | Agriculture | 16,373 | 124 | 10-Sep-2026 21:29 | | 8 | Aliens and Nationality | 923 | 0 | 10-Sep-2026 21:27 | | 9 | Animals and Animal Products | 2,340 | 0 | 20-Aug-2026 21:15 | | 10 | Energy | 5,344 | 193 | 10-Sep-2026 21:32 | | 11 | Federal Elections | 560 | 0 | 09-Jun-2026 20:48 | | 12 | Banks and Banking | 7,171 | 255 | 09-Sep-2026 21:53 | | 13 | Business Credit and Assistance | 1,657 | 6 | 01-Sep-2026 21:44 | | 14 | Aeronautics and Space | 6,370 | 166 | 04-Sep-2026 20:32 | | 15 | Commerce and Foreign Trade | 2,348 | 175 | 31-Aug-2026 22:19 | | 16 | Commercial Practices | 2,194 | 83 | 01-Sep-2026 21:48 | | 17 | Commodity and Securities Exchanges | 3,394 | 79 | 09-Sep-2026 21:50 | | 18 | Conservation of Power and Water Resources | 2,026 | 11 | 25-Aug-2026 21:21 | | 19 | Customs Duties | 3,132 | 35 | 27-Aug-2026 21:06 | | 20 | Employees' Benefits | 5,589 | 31 | 10-Sep-2026 21:29 | | 21 | Food and Drugs | 8,333 | 4 | 09-Sep-2026 21:50 | | 22 | Foreign Relations | 3,311 | 41 | 01-Sep-2026 21:46 | | 23 | Highways | 1,015 | 41 | 02-Sep-2026 20:48 | | 24 | Housing and Urban Development | 4,848 | 23 | 21-Aug-2026 21:35 | | 25 | Indians | 4,710 | 9 | 10-Dec-2025 00:35 | | 26 | Internal Revenue | 6,013 | 0 | 09-Sep-2026 21:51 | | 27 | Alcohol, Tobacco Products and Firearms | 3,857 | 0 | 18-Aug-2026 21:40 | | 28 | Judicial Administration | 3,051 | 50 | 02-Sep-2026 20:50 | | 29 | Labor | 7,201 | 102 | 10-Sep-2026 21:31 | | 30 | Mineral Resources | 5,793 | 13 | 09-Sep-2026 21:50 | | 31 | Money and Finance: Treasury | 5,345 | 70 | 27-Aug-2026 21:08 | | 32 | National Defense | 3,702 | 114 | 18-Aug-2026 21:41 | | 33 | Navigation and Navigable Waters | 4,619 | 25 | 10-Sep-2026 21:30 | | 34 | Education | 3,170 | 32 | 10-Sep-2026 21:30 | | 36 | Parks, Forests, and Public Property | 3,081 | 27 | 25-Aug-2026 21:21 | | 37 | Patents, Trademarks, and Copyrights | 1,267 | 11 | 27-Aug-2026 21:07 | | 38 | Pensions, Bonuses, and Veterans' Relief | 2,871 | 16 | 28-Aug-2026 21:24 | | 39 | Postal Service | 1,125 | 6 | 15-Jun-2026 20:53 | | 40 | Protection of Environment | 24,639 | 1,276 | 10-Sep-2026 22:07 | | 41 | Public Contracts and Property Management | 2,945 | 11 | 01-Sep-2026 22:05 | | 42 | Public Health | 7,244 | 25 | 14-Aug-2026 21:38 | | 43 | Public Lands: Interior | 5,207 | 14 | 13-Aug-2026 21:13 | | 44 | Emergency Management and Assistance | 907 | 6 | 24-Jun-2026 14:49 | | 45 | Public Welfare | 5,652 | 33 | 01-Sep-2026 22:05 | | 46 | Shipping | 8,372 | 51 | 02-Sep-2026 20:52 | | 47 | Telecommunication | 4,734 | 15 | 04-Sep-2026 20:31 | | 48 | Federal Acquisition Regulations System | 10,128 | 10 | 02-Sep-2026 20:52 | | 49 | Transportation | 8,944 | 238 | 10-Sep-2026 21:45 | | 50 | Wildlife and Fisheries | 3,244 | 168 | 02-Sep-2026 21:20 | **All 49 CFR titles are complete.** CFR Title 35 does not appear because it is *Reserved* — the eCFR's own title index marks it `reserved: true`, so 49 titles is the whole Code, not a subset. Every count in that table was measured by reading the file in `data/` on 2026-09-11. Nothing is estimated and nothing is taken from an index page's own total. ## As of The text is the **current** CFR as republished by the U.S. Government Publishing Office from the Electronic Code of Federal Regulations, pulled **2026-09-11**. The eCFR title index reported itself `up_to_date_as_of 2026-09-09` at pull time. GPO rebuilds a title's bulk file when that title changes, so each title carries its own build date — the right-hand column above, and `extra.bulk_last_modified` on every row. Titles that agencies rarely touch carry older build dates by design: Title 3 (*The President*) was last rebuilt 20-May-2024, and the eCFR title index gives its `latest_amended_on` as 2015-03-17. This is a snapshot, not a live feed. For a section that has been amended since its title's build date, check the eCFR URL in `source`. ## How complete is it — checked against the live eCFR Completeness is not asserted, it is measured. For every one of the 49 titles we asked the eCFR's own structure endpoint (`/api/versioner/v1/structure/2026-09-09/title-{n}.json`, an allowed path) for the list of section identifiers it currently publishes, and compared it with what is in these files: | | count | |---|--:| | section identifiers the eCFR listed as live on 2026-09-09 | 220,526 | | section identifiers held here | 219,055 (99.33%) | | listed by eCFR, not held here | 1,520 | | held here, no longer listed by eCFR | 49 | Of the 1,520 not held, **1,476 carry no text of their own in the source** — they are undesignated group headings whose substance lives in their subsections (48 C.F.R. 1.105 *Issuance*, 29 C.F.R. 2530.200a *Scope*) or pure cross-reference headings (29 C.F.R. 1917.28). The remaining 44, together with the 49 we hold that the eCFR no longer lists, are the lag between a title's GPO build date and 2026-09-09. No title is a partial pull. Every title is whole as of its build date. ## The record Twelve columns, all strings — the same shape as `docketx/us-statutes`, so the two can be read together: `id`, `level` (`federal`), `jurisdiction` (`us`), `code` (e.g. `29 C.F.R.`), `section` (e.g. `1910.1200`), `citation` (e.g. `29 C.F.R. § 1910.1200`), `title`, `text` (verbatim), `source` (the eCFR URL for that section), `license`, `retrieved_at`, `extra`. `extra` is a JSON **string** (parse it with `json.loads`) carrying the place of the section in the Code — `cfr_title`, `cfr_title_name`, `chapter`, `chapter_name`, `subchapter`, `part`, `part_name`, `subpart`, `subpart_name`, `subject_group`, the eCFR `node` id, the `source_credit` (the Federal Register history note printed with the section), and the `bulk_file` / `bulk_last_modified` it came from. ```python from datasets import load_dataset ds = load_dataset("docketx/us-regulations") # all 49 titles osha = ds["train"].filter(lambda r: r["code"] == "29 C.F.R.") # one title ``` ## Where it came from, and how - **Source:** the official bulk XML at `https://www.govinfo.gov/bulkdata/ECFR/title-{n}/ECFR-title{n}.xml` — GPO's bulk republication of the current eCFR, one file per title, 824,347,237 bytes in total. - **robots first.** `https://www.govinfo.gov/robots.txt` places no `Disallow` on `/bulkdata/`, and GPO publishes a bulkdata sitemap for the ECFR collection. Every request identified itself as `DocketRouterBot/1.0 (+https://docketrouter.ai/bot)` and was paced at 1.5s. - **What we did not do.** eCFR's own full-text endpoints — `/api/versioner/v1/full/` and `/api/renderer/v1/content/` — are `Disallow`ed in `https://www.ecfr.gov/robots.txt`, so they were not used and no user-agent was switched to get around them. Only `…/api/versioner/v1/titles.json`, which no rule covers, was read, for title names and the as-of date. - **Not text:** 7,171 sections and appendices marked `[Reserved]` in the source carry no text and are not included; a further 1,683 entries are heading-only stubs (an undesignated group heading such as 48 C.F.R. 1.105, whose text lives in its subsections) or appendices that exist only as a scanned form image. Nothing was dropped that had extractable text. Tables are rendered as pipe-separated rows; images are not transcribed, and the figure filenames are kept in `extra.graphics`. - **Appendices follow the source.** Appendices attached to a *part* or *subpart* are their own records (3,706 of them). Where the source nests an appendix inside a section — as it does with the mandatory Appendices A-F to 29 C.F.R. § 1910.1200 — that text is part of that section's record, which is why the 1910.1200 row is 307,615 characters long. ## Licence The Code of Federal Regulations is a work of the **United States Government** — published by the Office of the Federal Register (National Archives and Records Administration) and the Government Publishing Office — and is **in the public domain** in the United States. Every row carries `license: public-domain-government-work`. No claim of copyright is made over this compilation. Part of the [DocketX](https://docketx.ai) open legal corpus, alongside `docketx/us-statutes`, `docketx/court-rules`, `docketx/us-caselaw`, `docketx/oral-arguments-us` and `docketx/us-judges`.