us-caselaw / README.md
docketx's picture
Card: link to the DocketX GitHub (legal-scrambler, claude-for-legal plugin)
516d8da verified
|
Raw History Blame Contribute Delete
11.2 kB
metadata
license: cc0-1.0
language:
  - en
task_categories:
  - text-retrieval
  - text-generation
size_categories:
  - 1M<n<10M
pretty_name: US Caselaw
tags:
  - legal
  - law
  - caselaw
  - us-law
  - court-opinions
  - public-domain
  - rag
  - legal-nlp
  - legal-research
  - federal
  - state-law
configs:
  - config_name: opinions
    data_files:
      - split: train
        path:
          - data/al/opinions-2026-06-30.v1.jsonl.gz
          - data/ak/opinions-2026-06-30.v1.jsonl.gz
          - data/az/opinions-2026-06-30.v1.jsonl.gz
          - data/ar/opinions-2026-06-30.v1.jsonl.gz
          - data/ca/opinions-2026-06-30.v1.jsonl.gz
          - data/co/opinions-2026-06-30.v1.jsonl.gz
          - data/ct/opinions-2026-06-30.v1.jsonl.gz
          - data/de/opinions-2026-06-30.v1.jsonl.gz
          - data/dc/opinions-2026-06-30.v1.jsonl.gz
          - data/fl/opinions-2026-06-30.v1.jsonl.gz
          - data/ga/opinions-2026-06-30.v1.jsonl.gz
          - data/hi/opinions-2026-06-30.v1.jsonl.gz
          - data/id/opinions-2026-06-30.v1.jsonl.gz
          - data/il/opinions-2026-06-30.v1.jsonl.gz
          - data/in/opinions-2026-06-30.v1.jsonl.gz
          - data/ia/opinions-2026-06-30.v1.jsonl.gz
          - data/ks/opinions-2026-06-30.v1.jsonl.gz
          - data/ky/opinions-2026-06-30.v1.jsonl.gz
          - data/la/opinions-2026-06-30.v1.jsonl.gz
          - data/me/opinions-2026-06-30.v1.jsonl.gz
          - data/md/opinions-2026-06-30.v1.jsonl.gz
          - data/ma/opinions-2026-06-30.v1.jsonl.gz
          - data/mi/opinions-2026-06-30.v1.jsonl.gz
          - data/mn/opinions-2026-06-30.v1.jsonl.gz
          - data/ms/opinions-2026-06-30.v1.jsonl.gz
          - data/mo/opinions-2026-06-30.v1.jsonl.gz
          - data/mt/opinions-2026-06-30.v1.jsonl.gz
          - data/ne/opinions-2026-06-30.v1.jsonl.gz
          - data/nv/opinions-2026-06-30.v1.jsonl.gz
          - data/nh/opinions-2026-06-30.jsonl.gz
          - data/nj/opinions-2026-06-30.v1.jsonl.gz
          - data/nm/opinions-2026-06-30.v1.jsonl.gz
          - data/ny/opinions-2026-06-30.v1.jsonl.gz
          - data/nc/opinions-2026-06-30.v1.jsonl.gz
          - data/nd/opinions-2026-06-30.v1.jsonl.gz
          - data/oh/opinions-2026-06-30.v1.jsonl.gz
          - data/ok/opinions-2026-06-30.v1.jsonl.gz
          - data/or/opinions-2026-06-30.jsonl.gz
          - data/pa/opinions-2026-06-30.jsonl.gz
          - data/ri/opinions-2026-06-30.v1.jsonl.gz
          - data/sc/opinions-2026-06-30.v1.jsonl.gz
          - data/sd/opinions-2026-06-30.v1.jsonl.gz
          - data/tn/opinions-2026-06-30.v1.jsonl.gz
          - data/tx/opinions-part*.jsonl.gz
          - data/ut/opinions-2026-06-30.jsonl.gz
          - data/vt/opinions-2026-06-30.v1.jsonl.gz
          - data/va/opinions-2026-06-30.jsonl.gz
          - data/wa/opinions-2026-06-30.v1.jsonl.gz
          - data/wv/opinions-2026-06-30.v1.jsonl.gz
          - data/wi/opinions-2026-06-30.v1.jsonl.gz
          - data/wy/opinions-2026-06-30.jsonl.gz
          - data/scotus/opinions-2026-06-30.jsonl.gz
          - data/fed-appellate/opinions-2026-06-30-part*.jsonl.gz
          - data/fed-district/opinions-2026-06-30.v1.jsonl.gz
          - data/fed-bankruptcy/opinions-2026-06-30.v1.jsonl.gz
          - data/fed-special/opinions-2026-06-30.v1.jsonl.gz
          - data/territories/opinions-2026-06-30.v1.jsonl.gz
          - data/tribal/opinions-2026-06-30.v1.jsonl.gz
          - data/extras/opinions-2026-06-30.v1.jsonl.gz
dataset_info:
  - config_name: opinions
    features:
      - name: id
        dtype: string
      - name: doc_type
        dtype: string
      - name: jurisdiction
        dtype: string
      - name: title
        dtype: string
      - name: text
        dtype: string
      - name: source
        dtype: string
      - name: license
        dtype: string
      - name: retrieved_at
        dtype: string
      - name: citation
        dtype: string
      - name: court
        dtype: string
      - name: date
        dtype: string
      - name: extra
        struct:
          - name: cl_opinion_id
            dtype: string
          - name: cluster_id
            dtype: string
          - name: opinion_type
            dtype: string
          - name: text_kind
            dtype: string
          - name: source_label
            dtype: string

US Caselaw

Code & tools: github.com/docketx — legal-scrambler pseudonymises a case file on your own hardware before a frontier model sees it; claude-for-legal is the Claude Code plugin (docketx-open-law) that loads these datasets and checks citations against them.

The American case-law record in one dataset — published opinions from the Free Law Project / CourtListener bulk export of 2026-06-30: full text, all opinion types (majority, concurring, dissenting, per curiam, orders), one uniform row format across every jurisdiction.

10,797,772 opinions are live in this repo across 50 states + DC, the Supreme Court, the federal appellate, district, bankruptcy and special courts, the U.S. territories, the tribal courts, and a catch-all of state trial courts, attorney-general opinions and specialty tribunals that no other series carries. Every number on this page was measured by counting the lines of the actual uploaded file; none is an estimate.

Load it

from datasets import load_dataset
ds = load_dataset("docketx/us-caselaw", split="train")            # everything
ds = load_dataset("docketx/us-caselaw", split="train", streaming=True)  # 60 GB — stream it

One jurisdiction only? Each also stands alone as docketx/us-caselaw-<code> (e.g. docketx/us-caselaw-tx), which is much cheaper than pulling the union.

Row format

Every row is docketx record v1. Every column is a string in every file:

field meaning
id stable docketx document id
doc_type opinion
jurisdiction jurisdiction code — the <code> in data/<code>/
title case caption
text full opinion text
source origin of the record (CourtListener)
license public-domain
retrieved_at bulk-export date
citation reporter citation where the source has one
court court identifier
date date filed
extra cl_opinion_id, cluster_id, opinion_type, text_kind, source_label

The schema is declared in dataset_info above rather than inferred, and the opinions config lists its files explicitly. That is deliberate: a blind data/*/*.jsonl.gz glob previously pulled statute and court-rule files (which carry rule_set/rule_number and a differently-shaped extra) into the same config, so the parquet conversion inferred its schema from the first file, hit a column-name mismatch, and failed the whole dataset to 0 rows. Statutes and rules now live only in docketx/us-statutes and docketx/court-rules, where they belong.

What is here — measured counts

States and DC

jurisdiction code opinions
Alabama al 166,537
Alaska ak 14,914
Arizona az 44,194
Arkansas ar 80,470
California ca 242,831
Colorado co 62,317
Connecticut ct 61,409
Delaware de 23,480
District of Columbia dc 26,001
Florida fl 447,040
Georgia ga 230,300
Hawaii hi 35,879
Idaho id 35,820
Illinois il 249,250
Indiana in 136,110
Iowa ia 83,272
Kansas ks 69,413
Kentucky ky 92,146
Louisiana la 367,729
Maine me 31,116
Maryland md 53,833
Massachusetts ma 90,879
Michigan mi 159,686
Minnesota mn 71,487
Mississippi ms 76,841
Missouri mo 161,325
Montana mt 64,117
Nebraska ne 51,154
Nevada nv 36,992
New Hampshire nh 22,351
New Jersey nj 142,776
New Mexico nm 35,069
New York ny 963,045
North Carolina nc 148,915
North Dakota nd 27,900
Ohio oh 270,910
Oklahoma ok 81,558
Oregon or 86,341
Pennsylvania pa 347,902
Rhode Island ri 26,773
South Carolina sc 62,793
South Dakota sd 25,593
Tennessee tn 92,508
Texas tx 662,717
Utah ut 34,886
Vermont vt 27,714
Virginia va 54,048
Washington wa 150,239
West Virginia wv 39,546
Wisconsin wi 72,350
Wyoming wy 16,358
51 jurisdictions 6,658,834

Federal, territorial, tribal and catch-all

tier code opinions state
Supreme Court of the United States scotus 521,825 complete
Federal bankruptcy courts fed-bankruptcy 79,523 complete
Federal special courts fed-special 280,860 complete
U.S. territories territories 67,210 complete
Tribal courts tribal 2,205 complete
Federal appellate (all circuits) fed-appellate 1,510,937 complete
Federal district courts fed-district 1,199,105 complete
State trial courts, AG opinions, specialty tribunals (1,612 court ids) extras 477,273 complete

Every count on this page was measured on 2026-09-17 by decompressing each file the opinions config loads and counting its lines. Every state's loaded data is byte-identical to its standalone docketx/us-caselaw-<code> dataset (same SHA-256; Texas as three parts holding the same 662,717 rows), and each of those counts matched its publish manifest exactly. Total: 10,797,772 opinions.

The bulk export holds 10,798,347 opinions. The extras slice (added 2026-09-17, 477,273 rows, 0 duplicate ids, slice sha256 9123f2d3cdff3c48…) carries the 1,612 state courts that no per-jurisdiction plan included (477,294 opinions; 21 of them have empty text). It includes 67,524 attorney-general opinion reports from 16 states, which are official opinions but not court decisions. To exclude them, drop rows whose court is extras- followed by one of: texag, oklaag, arkag, laag, flaag, nyag, nebag, moag, wisag, calag, kanag, coloag, mdag, washag, minnag, paag. (Do not filter on a trailing ag: Ohio's Portage County courts and an Onondaga County court also end that way.) 575 opinions are in no file, each for a known reason: 533 in planned courts and 21 in extras have empty text, and 21 have a cluster or docket missing from the bulk export itself.

Superseded files still on disk

Until 2026-09-17 this page's config loaded an older, smaller slice for 44 jurisdictions (the page then served 9,095,360 of 10,320,499; Florida loaded 259,051 of 447,040, California 227,809 of 242,831). The config now loads the complete opinions-2026-06-30.v1.jsonl.gz for those 44. The older files are no longer part of any config and are kept only until they are removed in a cleanup commit.

Coverage honesty

The open record is appellate-heavy. Most US trial-court rulings are published nowhere at all — no database has them, including this one. What is here is the published record.

Provenance and license

Judicial opinions are edicts of government and carry no copyright (Banks v. Manchester, 128 U.S. 244 (1888); Georgia v. Public.Resource.Org, 590 U.S. 255 (2020)). Packaging is CC0 1.0. Source: CourtListener bulk export of 2026-06-30, Free Law Project — https://free.law.

Built by DocketX — the same corpus powers the verified legal API at docketrouter.ai.