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LeanLaw Matter API

The Matter API from LeanLaw — 2 operation(s) for matter.

LeanLaw Matter API is one of 11 APIs that LeanLaw publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Matter. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, authentication docs, and rate-limit docs.

This API exposes 5 operations across 2 paths, and defines 18 schemas. It is described by OpenAPI 3.2.0, at version v1.

Requests are made against a single base URL, https://api.leanlaw.io.

5 operations 2 paths 18 schemas 1 DELETE2 GET1 POST1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
v1
Base URL
https://api.leanlaw.io
Authentication
HTTP Bearer
Resource Areas
1

Authentication & Security 1

LeanLaw Matter API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (BearerAuth). By default, every request must be authenticated.

Paths & Operations 5

Across 2 paths, the API surfaces 5 operations — 1 DELETE, 2 GET, 1 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.

Matter 5
GET
/v2/matters
Get a list of matters
ListMatters 14 params → 200
POST
/v2/matters
Create a new matter
CreateMatter body → 200
GET
/v2/matters/{id}
Get a matter by id
GetMatter 1 param → 200
PUT
/v2/matters/{id}
Update a matter
UpdateMatter 1 param body → 200
DELETE
/v2/matters/{id}
Delete a matter
DeleteMatter 1 param → 200

Schemas 18

The contract defines 18 schemas that model the data the API accepts and returns. The most detailed are MatterDetail (21 properties), MatterList (17 properties), CreateMatter (15 properties), UpdateMatter (12 properties). Each schema is shown below with its type and property counts.

PracticeAreaReference
object
Represents a practice area
1 property 1 required
Pagination
object
Pagination information
4 properties 3 required
CustomFieldValueUpdate
object
Sets the value of a single custom field on a record. Only the fields listed are touched - any custom field not in the array keeps its current value.
3 properties 1 required
MatterListClient
object
Represents a summary of a client for a matter
2 properties 1 required
MatterLedesConfiguration
object
Configuration for LEDES in a matter
5 properties 5 required
MatterType
string
Matter type determines defaults for time entries and certain billing behaviors. The default value is "hourly".
MatterDetailClient
object
Represents a summary of a client for a matter
2 properties 1 required
MatterList
object
Represents a matter in the firm
17 properties 7 required
CustomFieldValueType
string
The type of the custom field. "Enum" fields are enumerated fields with a set of possible values, the values are outlined in the 'options' property.
CreateMatter
object
Creating a new matter
15 properties 3 required
MatterDetailResponse
object
Standardized API response wrapper for single item responses
1 property
CustomFieldValue
object
A custom field and its value on a client, matter or user
5 properties 4 required
ConflictInformation
object
Conflict information for a matter
4 properties
Metadata
object
2 properties 2 required
UpdateMatter
object
Update an existing matter
12 properties
MatterListListResponse
object
Standardized API response wrapper for list responses with pagination Paginationdata
2 properties
MatterDetail
object
Represents a matter in the firm
21 properties 8 required
UserReference
object
A user in the firm
4 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

leanlaw-matter-api-openapi.yml Raw ↑

Other APIs LeanLaw publishes across the network.

LeanLaw MCP Server
LeanLaw Client API
LeanLaw Codes API
LeanLaw Custom Field API
LeanLaw Expense API
LeanLaw Fixed Fee API
LeanLaw Invoice API
LeanLaw Practice Area API
LeanLaw Time Entry API
LeanLaw User API
Where this information came from

This is an independent, third-party profile of LeanLaw Matter 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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