Lex Machina
Lex Machina Litigation Analytics API

The Lex Machina Litigation Analytics API exposes the company's full legal analytics dataset over REST. It supports OAuth 2.0 client credentials (JWT bearer tokens) and provides 57 endpoints across Federal District, Federal Appeals, State, Bankruptcy, ITC, and PTAB case data; Attorneys, Judges, Magistrates, Law Firms, Parties, and Patents as first-class entities; Docket entries; substring search across attorneys, judges, law firms, and parties; saved Alerts and Alert run results; Case Query (POST) with rich filtering by participants, dates, events, resolutions, findings, remedies, and damages; and District Case Analytics from either a query or a saved alert. Reference list endpoints cover case resolutions, case tags, case types, courts, damages categories, events, and judgment sources, so clients can discover the controlled vocabularies used across the platform. Base URL is https://api.lexmachina.com; the current API version is 20260324.
Lex Machina Litigation Analytics API is published by Lex Machina on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Legal Analytics, Litigation, Court Data, Dockets, and Judges. The published artifact set on APIs.io includes API documentation, an OpenAPI specification, authentication docs, and SDKs.
Documentation GitHub OpenAPI
OpenAPI Specification

openapi: 3.1.0
info:
  title: Lex Machina API
  version: '20260324'
paths:
  /analyze-district-cases/from-query:
    post:
      tags:
      - Federal District Cases
      - Analytics
      summary: Analyze District Cases From Query
      operationId: analyze_district_cases_from_query
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DistrictCaseAnalyticFromQuery'
            examples:
              District Case Law Firm Count by Role from Query:
                summary: District Case Law Firm Count by Role from Query
                description: district case counts of lawfirms by role for contracts cases in njd filed in 2019 and terminated
                  in 2021
                value: '{"analyticType": "LawFirmCountByRole", "districtCaseQuery": {"courts": {"include": ["njd"]}, "caseTypes":
                  {"include": ["Contracts"]}, "dates": {"filed": {"onOrAfter": "2019-01-01", "onOrBefore": "2019-12-31"},
                  "terminated": {"onOrAfter": "2021-01-01", "onOrBefore": "2021-12-31"}}}}'
        required: true
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CaseAnalyticResult'
              examples:
                District Case Law Firm Count by Role from Query:
                  summary: District Case Law Firm Count by Role from Query
                  value:
                    totalCases: 63
                    aggregation:
                      data:
                      - lawFirmId: 3571
                        lawFirmName: State of New Jersey
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 12
                        - role: Third Party
                          count: 0
                      - lawFirmId: 4743
                        lawFirmName: Greenbaum, Rowe, Smith & Davis
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 13
                        - role: Third Party
                          count: 0
                      - lawFirmId: 79274506
                        lawFirmName: John Zidziunas & Associates
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 12
                        - role: Third Party
                          count: 0
                      - lawFirmId: 74149061
                        lawFirmName: Riker Danzig
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 11
                        - role: Third Party
                          count: 0
                      - lawFirmId: 73892766
                        lawFirmName: Nukk-Freeman
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 11
                        - role: Third Party
                          count: 0
                      - lawFirmId: 69826
                        lawFirmName: Clark Hill
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 10
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2764992
                        lawFirmName: Price, Meese, Shulman & D'Arminio
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 3
                        - role: Defendant
                          count: 4
                        - role: Third Party
                          count: 0
                      - lawFirmId: 948987
                        lawFirmName: Connell Foley
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 6
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 160737897
                        lawFirmName: Campbell Rocco Law
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 6
                        - role: Third Party
                          count: 0
                      - lawFirmId: 73924463
                        lawFirmName: Sills Cummis & Gross
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 6
                        - role: Third Party
                          count: 0
                      - lawFirmId: 28526743
                        lawFirmName: Schenck Price Smith & King
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 5
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 1
                      - lawFirmId: 95470716
                        lawFirmName: Randy Scott Zelin
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 6
                        - role: Third Party
                          count: 0
                      - lawFirmId: 79063
                        lawFirmName: Herzfeld & Rubin
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 5
                        - role: Third Party
                          count: 0
                      - lawFirmId: 485015
                        lawFirmName: Post & Schell
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 5
                        - role: Third Party
                          count: 0
                      - lawFirmId: 433
                        lawFirmName: Reed Smith
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 5
                        - role: Third Party
                          count: 0
                      - lawFirmId: 24440
                        lawFirmName: Ballard Spahr
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 3
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 119127128
                        lawFirmName: Coughlin Midlige & Garland
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 4
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 13647919
                        lawFirmName: Saiber
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 3
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 16
                        lawFirmName: Greenberg Traurig
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 4
                        - role: Third Party
                          count: 0
                      - lawFirmId: 226013496
                        lawFirmName: Fox Rothschild
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 78110100
                        lawFirmName: Trinity & Farsiou
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2634106
                        lawFirmName: Houser & Allison
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2944840
                        lawFirmName: Chiesa Shahinian & Giantomasi
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 1
                      - lawFirmId: 1927
                        lawFirmName: Saul Ewing Arnstein & Lehr
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 76758445
                        lawFirmName: White and Williams
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 9441075
                        lawFirmName: Braff, Harris, Sukoneck & Maloof
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 3625370
                        lawFirmName: Wolff & Samson
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 1
                      - lawFirmId: 2544529
                        lawFirmName: Feder Kaszovitz
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 21177272
                        lawFirmName: Blank Rome
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 198107902
                        lawFirmName: Landman Corsi Ballaine & Ford
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 91790
                        lawFirmName: Lake & Cobb
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 110748325
                        lawFirmName: Finestein & Malloy
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 1359265
                        lawFirmName: John E. Osborn
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 3
                        - role: Third Party
                          count: 0
                      - lawFirmId: 32792
                        lawFirmName: Wilson Elser
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 191985184
                        lawFirmName: Law Offices of Joel C. Seltzer
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 53613883
                        lawFirmName: Fishkin Lucks
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 16080674
                        lawFirmName: Zukerman Gore Brandeis & Crossman
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 87952
                        lawFirmName: FordHarrison
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 54662
                        lawFirmName: Lewis Brisbois Bisgaard & Smith
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 2
                      - lawFirmId: 86880158
                        lawFirmName: Anderson & Shah
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 45565730
                        lawFirmName: Littleton Park Joyce Ughetta & Kelly
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 192889343
                        lawFirmName: Gennet, Kallmann, Antin, Sweetman & Nichols
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 10016960
                        lawFirmName: MARK S. KANCHER
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 284166
                        lawFirmName: Marks & Klein
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 3641580
                        lawFirmName: Gordon Rees Scully Mansukhani
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 482562
                        lawFirmName: McCarter & English
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 8286817
                        lawFirmName: McElroy, Deutsch, Mulvaney & Carpenter
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 74592432
                        lawFirmName: McNelly Law Group
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 871412
                        lawFirmName: Bressler, Amery & Ross
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 211807676
                        lawFirmName: Brown & Connery
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 159371016
                        lawFirmName: Hurvitz & Waldman
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 604
                        lawFirmName: Department of Justice
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 5000
                        lawFirmName: Dinsmore & Shohl
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 14953455
                        lawFirmName: KML Law Group
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2840450
                        lawFirmName: Robins Kaplan
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 48787777
                        lawFirmName: Rosenblatt Law (rosenblattlegal.com)
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 84836034
                        lawFirmName: Scarinci Hollenbeck
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 1200526
                        lawFirmName: Sherman Silverstein Kohl Rose & Podolsky
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 14984471
                        lawFirmName: Donnelly Minter & Kelly
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2559918
                        lawFirmName: Lauletta Birnbaum
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 204149042
                        lawFirmName: Thomas Paschos & Associates
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 72715108
                        lawFirmName: ARBUS MAYBRUCH & GOODE
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 108090
                        lawFirmName: Cavanagh Law Firm
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 73726804
                        lawFirmName: Triarsi, Betancourt, Wukovits & Dugan
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 25034
                        lawFirmName: Troutman Pepper Locke
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 32096952
                        lawFirmName: Verner Simon
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 720671
                        lawFirmName: FisherBroyles
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 57787079
                        lawFirmName: Law Offices of Frank Lagano
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 2
                        - role: Third Party
                          count: 0
                      - lawFirmId: 16233164
                        lawFirmName: Whiteman Law Group (whitemanlawgroup.com)
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 2
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 175082254
                        lawFirmName: The Choi Law Group
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 9007590
                        lawFirmName: TheChoiLawGroup
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 43709706
                        lawFirmName: Abilheira & Associates
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2259387
                        lawFirmName: The Sultzer Law Group
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 295568
                        lawFirmName: Thomas, Thomas & Hafer
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 72927124
                        lawFirmName: TorricellaLaw
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 1103546
                        lawFirmName: Trachtman & Trachtman (trachtmanlaw.com)
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2763131
                        lawFirmName: Walsh & Walsh, Esqs.
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 50008484
                        lawFirmName: Warshaw Burstein
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 10357
                        lawFirmName: Weir & Partners
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 2537860
                        lawFirmName: Wu & Kao
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 62232367
                        lawFirmName: The Law Offices of Bruce E. Baldinger
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 1
                        - role: Defendant
                          count: 0
                        - role: Third Party
                          count: 0
                      - lawFirmId: 87592700
                        lawFirmName: Ameri Law Firm
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 73646052
                        lawFirmName: Antar Law Firm
                        rolesAndCounts:
                        - role: Plaintiff
                          count: 0
                        - role: Defendant
                          count: 1
                        - role: Third Party
                          count: 0
                      - lawFirmId: 241440
                        lawFirmNa

# --- truncated at 32 KB (685 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/lex-machina/refs/heads/main/openapi/lex-machina-openapi.yml
Lex Machina Litigation Analytics API

Documentation

Specifications

SDKs

Other Resources

OpenAPI Specification
