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LeanLaw Expense API

The Expense API from LeanLaw — 2 operation(s) for expense.

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

Tagged areas include Expense. 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 13 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 13 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 Expense 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.

Expense 5
GET
/v2/expenses
Get a list of expenses
ListExpenses 12 params → 200
POST
/v2/expenses
Create a new expense
CreateExpense body → 200
GET
/v2/expenses/{id}
Get an expense by id
GetExpense 1 param → 200
PUT
/v2/expenses/{id}
Update an expense
UpdateExpense 1 param body → 200
DELETE
/v2/expenses/{id}
Delete an expense
DeleteExpense 1 param → 200

Schemas 13

The contract defines 13 schemas that model the data the API accepts and returns. The most detailed are ExpenseDetail (16 properties), ExpenseList (15 properties), UpdateExpense (6 properties), CreateExpense (6 properties). Each schema is shown below with its type and property counts.

ClientReference
object
2 properties 1 required
Pagination
object
Pagination information
4 properties 3 required
ExpenseDetailResponse
object
Standardized API response wrapper for single item responses
1 property
ExpenseListListResponse
object
Standardized API response wrapper for list responses with pagination Paginationdata
2 properties
UpdateExpense
object
Data for updating an expense
6 properties
ExpenseDetail
object
16 properties 8 required
InvoiceReference
object
6 properties 6 required
Metadata
object
2 properties 2 required
InvoiceState
string
The state of an invoice
ExpenseList
object
15 properties 7 required
CreateExpense
object
6 properties 4 required
UserReference
object
A user in the firm
4 properties 2 required
MatterReference
object
2 properties 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

leanlaw-expense-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 Fixed Fee API
LeanLaw Invoice API
LeanLaw Matter 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 Expense 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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