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Lex Machina Entities API

Entity data.

Lex Machina Entities 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 Entities. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and authentication docs.

This API exposes 14 operations across 14 paths, and defines 11 schemas. It is described by OpenAPI 3.1.0, at version 20260324.

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

14 operations 14 paths 11 schemas 14 GET

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 Entities API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (JwtAccessBearer).

Paths & Operations 14

Across 14 paths, the API surfaces 14 operations — 14 GET. Each is listed below with its method, path, parameters, and response codes.

Entities 14

Entity data.

GET
/attorneys/{attorney_id}
Get Attorney
get_attorney 1 param → 200404422401
GET
/attorneys
Get Attorneys
get_attorneys 1 param → 200404401422
GET
/bankruptcy-judges/{bankruptcy_judge_id}
Get Bankruptcy Judge
get_bankruptcy_judge 1 param → 200401404422
GET
/bankruptcy-judges
Get Bankruptcy Judges
get_bankruptcy_judges 1 param → 200401404422
GET
/federal-judges/{federal_judge_id}
Get Federal Judge
get_federal_judge 1 param → 200401404422
GET
/federal-judges
Get Federal Judges
get_federal_judges 1 param → 200401404422
GET
/law-firms/{law_firm_id}
Get Law Firm
get_law_firm 1 param → 200404422401
GET
/law-firms
Get Law Firms
get_law_firms 1 param → 200404401422
GET
/magistrate-judges/{magistrate_judge_id}
Get Magistrate
get_magistrate 1 param → 200404422401
GET
/magistrate-judges
Get Magistrates
get_magistrates 1 param → 200404401422
GET
/parties/{party_id}
Get Party
get_party 1 param → 200404422401
GET
/parties
Get Parties
get_parties 1 param → 200404401422
GET
/state-judges/{state_judge_id}
Get State Judge
get_state_judge 1 param → 200401404422
GET
/state-judges
Get State Judges
get_state_judges 1 param → 200401404422

Schemas 11

The contract defines 11 schemas that model the data the API accepts and returns. The most detailed are FederalJudgeData (6 properties), LawFirmReference (4 properties), MagistrateJudgeData (4 properties), AttorneyReference (4 properties). Each schema is shown below with its type and property counts.

StateJudgeData
object
3 properties 3 required
FederalJudgeData
object
6 properties 6 required
BankruptcyJudgeData
object
4 properties 4 required
CaseCountByCourt
object
2 properties 2 required
AttorneyData
object
2 properties 2 required
LawFirmData
object
2 properties 2 required
PartyReference
object
Indicates that the Lex Machina party id input was has changed, the inputId is the ID given that should map to the returned partyId.
4 properties 4 required
PartyData
object
2 properties 2 required
AttorneyReference
object
Indicates that the Lex Machina attorney id input was has changed, the inputId is the ID given that should map to the returned attorneyId.
4 properties 4 required
MagistrateJudgeData
object
4 properties 4 required
LawFirmReference
object
Indicates that the Lex Machina law firm id input was has changed, the inputId is the ID given that should map to the returned lawFirmId.
4 properties 4 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lex-machina-entities-api-openapi.yml Raw ↑

Other APIs Lex Machina publishes across the network.

Lex Machina Alerts API
Lex Machina Analytics API
Lex Machina Attorneys API
Lex Machina Authorization API
Lex Machina Bankruptcy Cases API
Lex Machina Case Query API
Lex Machina Dockets API
Lex Machina Federal Appeals Cases API
Lex Machina Federal District Cases API
Lex Machina Find API
Lex Machina ITC Investigations API
Lex Machina Judges API
Where this information came from

This is an independent, third-party profile of Lex Machina Entities API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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