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Lex Machina

Lex Machina Case Query API

Provides a filter based way to find cases.

Documentation Provider Profile APIs.io OpenAPI GitHub

Lex Machina Case Query API is one of 21 APIs that Lex Machina publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Case Query. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and authentication docs.

This API exposes 3 operations across 3 paths, and defines 49 schemas. It is described by OpenAPI 3.1.0, at version 20260324.

Requests are made against a single base URL, https://api.lexmachina.com.

3 operations 3 paths 49 schemas 3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
20260324
Base URL
https://api.lexmachina.com
Authentication
HTTP Bearer
Resource Areas
1

Authentication & Security 1

Lex Machina Case Query API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (JwtAccessBearer).

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 3 POST. Each is listed below with its method, path, parameters, and response codes.

Case Query 3

Provides a filter based way to find cases.

POST
/query-appeals-cases
Query Appeals Cases
query_appeals_cases body → 200401404422
POST
/query-district-cases
Query District Cases
query_district_cases body → 200401404422
POST
/query-state-cases
Query State Cases
query_state_cases body → 200422401404

Schemas 49

The contract defines 49 schemas that model the data the API accepts and returns. The most detailed are DistrictCaseQuery (21 properties), StateCaseQuery (16 properties), AppealsCaseQuery (15 properties), AppealsPartyFilter (12 properties). Each schema is shown below with its type and property counts.

JudgmentSourceFilter
object
2 properties
AppealsCaseQuery
object
15 properties
DistrictCaseReference
object
2 properties 2 required
StateCaseQuery
object
16 properties 1 required
StateCaseReference
object
2 properties 2 required
TimingFilter
object
2 properties
CaseDatesFilter
object
4 properties
IndividualNameTypeFilter
object
2 properties
NameTypeFilter
object
2 properties
IndividualStateDamagesFilter
object
5 properties
AppellateDecisionFilter
object
2 properties
MultidistrictLitigationFilter
object
2 properties
CaseStatus
string
AppealsLawFirmFilter
object
12 properties
Ordering
string
OriginatingCasesFilter
object
4 properties
JudgmentEventFilter
object
2 properties
AppealsAttorneyFilter
object
12 properties
LawFirmFilter
object
8 properties
ResolutionsFilter
object
2 properties
CourtFilter
object
2 properties
OriginatingDistrictCaseFilter
object
2 properties
StateCourtFilter
object
3 properties 1 required
PatentInvalidityReasonsFilter
object
1 property
AppealsCaseQueryResult
object
1 property 1 required
AppealsCaseDatesFilter
object
3 properties
NameFilter
object
2 properties
IndividualRemediesFilter
object
5 properties
PartyFilter
object
8 properties
IndividualResolutionsFilter
object
2 properties
MagistrateFilter
object
2 properties
PatentFilter
object
2 properties
DistrictCaseQuery
object
21 properties
StateCaseQueryResult
object
1 property 1 required
CaseTypesFilter
object
2 properties
EventFilter
object
2 properties
OriginatingVenuesFilter
object
2 properties
IndividualFindingsFilter
object
6 properties
OriginatingCaseTypesFilter
object
2 properties
JudgeFilter
object
2 properties
AppealsCaseReference
object
2 properties 2 required
OriginatingJudgeFilter
object
1 property
AppealsPartyFilter
object
12 properties
CaseTagsFilter
object
2 properties
SupremeCourtDecisionsFilter
object
2 properties
IndividualDamagesFilter
object
6 properties
DistrictCaseQueryResult
object
1 property 1 required
IndividualRulingsFilter
object
4 properties
AttorneyFilter
object
8 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lex-machina-case-query-api-openapi.yml Raw ↑

Other APIs Lex Machina publishes across the network.

Lex Machina Alerts API
AE Profile APIs.io
Lex Machina Analytics API
AE Profile APIs.io
Lex Machina Attorneys API
AE Profile APIs.io
Lex Machina Authorization API
AE Profile APIs.io
Lex Machina Bankruptcy Cases API
AE Profile APIs.io
Lex Machina Dockets API
AE Profile APIs.io
Lex Machina Entities API
AE Profile APIs.io
Lex Machina Federal Appeals Cases API
AE Profile APIs.io
Lex Machina Federal District Cases API
AE Profile APIs.io
Lex Machina Find API
AE Profile APIs.io
Lex Machina ITC Investigations API
AE Profile APIs.io
Lex Machina Judges API
AE Profile APIs.io
#Case Query
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API Details
ID
lex-machina:lex-machina-case-query-api
Base URL
https://api.lexmachina.com
Docs
https://developer.lexmachina.com/
Provider
Lex Machina
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