Lawmatics Payment Expenses API
The Payment Expenses API from Lawmatics — 2 operation(s) for payment expenses.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/lawmatics-payment-expenses-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: Lawmatics OAuth Payment Expenses API
version: 1.22.0
description: 'The official Lawmatics REST API for legal CRM, client intake and law firm automation. Manage matters (prospects), contacts, companies, custom forms and form entries, custom fields, events and appointments, tasks, notes, files, tags, users, time entries, expenses, invoices and transactions.
Authentication is OAuth 2.0 authorization code grant; access tokens do not expire, there are no refresh tokens, and Lawmatics does not currently support scopes - an authorized app receives full CRUD access to the granted account.
All list endpoints support the shared query-parameter grammar documented in the Param Guide: `fields` (field selection, one level deep, `fields=all` to expand), `page` (pagination), `sort_by`/`sort_order`, and `filter_by`/`filter_on`/`filter_with` (one filter at a time; operators `=`, `!=`, `<=`, `<`, `>=`, `>`, `like`, `ilike`, `null`, `not_null`).
Responses follow a JSON:API-style `data` / `attributes` / `relationships` envelope.'
contact:
name: Lawmatics API Support
email: api@lawmatics.com
url: https://docs.lawmatics.com/
termsOfService: https://www.lawmatics.com/terms-of-use
servers:
- url: https://api.lawmatics.com
description: Lawmatics production API
security:
- oauth2: []
- bearerAuth: []
tags:
- name: Payment Expenses
paths:
/v1/expenses:
get:
operationId: getExpenses
summary: Expenses
description: A paginated list of all Time Entries in Lawmatics
tags:
- Payment Expenses
parameters:
- name: fields
in: query
required: false
schema:
type: string
example: all
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
examples:
getExpenses:
summary: GET Expenses
value:
data:
- id: '39'
type: expense
attributes:
description: Phone Call
duration: 0.1
duration_rounded: 0.1
started_at: '2022-12-26T16:19:51.917-08:00'
completed_at: '2022-12-26T16:25:51.917-08:00'
created_at: '2022-12-26T16:20:24.936-08:00'
updated_at: '2022-12-26T16:23:49.489-08:00'
billable: true
rate_flat_fee: true
rate:
cents: 123000
currency_iso: USD
relationships:
user:
data:
id: '5'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data:
id: '1'
type: activity_type
contactable:
data:
id: '101'
type: prospect
invoice:
data:
id: '1'
type: invoice
- id: '37'
type: expense
attributes:
description: null
duration: 0
duration_rounded: 0
started_at: '2022-07-05T13:01:52.086-07:00'
completed_at: null
created_at: '2022-07-05T13:01:52.089-07:00'
updated_at: '2022-07-05T13:01:52.089-07:00'
billable: true
rate_flat_fee: false
rate:
cents: 0
currency_iso: USD
relationships:
user:
data:
id: '11'
type: user
created_by:
data:
id: '11'
type: user
activity_type:
data: null
contactable:
data: null
invoice:
data: null
- id: '36'
type: expense
attributes:
description: null
duration: 0.004429444444444444
duration_rounded: 0.1
started_at: '2022-03-14T12:02:44.172-07:00'
completed_at: null
created_at: '2022-03-14T12:02:44.355-07:00'
updated_at: '2023-01-10T15:15:46.748-08:00'
billable: true
rate_flat_fee: false
rate:
cents: 123000
currency_iso: USD
relationships:
user:
data:
id: '5'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data:
id: '1'
type: activity_type
contactable:
data: null
invoice:
data: null
- id: '16'
type: expense
attributes:
description: null
duration: 0
duration_rounded: 0
started_at: '2022-01-27T16:13:29.750-08:00'
completed_at: null
created_at: '2022-01-27T16:13:29.752-08:00'
updated_at: '2022-01-27T16:13:29.752-08:00'
billable: true
rate_flat_fee: false
rate:
cents: 0
currency_iso: USD
relationships:
user:
data:
id: '5'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data: null
contactable:
data: null
invoice:
data: null
- id: '11'
type: expense
attributes:
description: null
duration: 0.006879166666666667
duration_rounded: 0.1
started_at: '2021-11-04T18:15:11.498-07:00'
completed_at: null
created_at: '2021-11-04T18:15:11.500-07:00'
updated_at: '2022-01-05T16:40:11.136-08:00'
billable: true
rate_flat_fee: false
rate:
cents: 0
currency_iso: USD
relationships:
user:
data:
id: '5'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data:
id: '1'
type: activity_type
contactable:
data: null
invoice:
data: null
- id: '10'
type: expense
attributes:
description: ''
duration: 0
duration_rounded: 0.1
started_at: '2021-11-04T18:15:03.000-07:00'
completed_at: '2021-11-04T18:15:11.299-07:00'
created_at: '2021-11-04T18:15:03.154-07:00'
updated_at: '2022-03-22T11:23:51.773-07:00'
billable: true
rate_flat_fee: false
rate:
cents: 123123
currency_iso: USD
relationships:
user:
data:
id: '3'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data:
id: '1'
type: activity_type
contactable:
data:
id: '19'
type: prospect
invoice:
data: null
- id: '9'
type: expense
attributes:
description: ''
duration: 0.003985277777777779
duration_rounded: 0.1
started_at: '2021-11-02T10:27:10.000-07:00'
completed_at: '2021-11-04T18:15:03.033-07:00'
created_at: '2021-11-02T10:27:10.168-07:00'
updated_at: '2021-11-04T18:15:03.080-07:00'
billable: true
rate_flat_fee: false
rate:
cents: 0
currency_iso: USD
relationships:
user:
data:
id: '5'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data:
id: '1'
type: activity_type
contactable:
data:
id: '14'
type: prospect
invoice:
data: null
- id: '8'
type: expense
attributes:
description: Test
duration: 0.003545555555555556
duration_rounded: 0.1
started_at: '2021-10-26T16:32:57.000-07:00'
completed_at: '2021-10-26T16:33:09.764-07:00'
created_at: '2021-10-26T16:32:57.553-07:00'
updated_at: '2022-12-26T16:22:52.245-08:00'
billable: true
rate_flat_fee: false
rate:
cents: 0
currency_iso: USD
relationships:
user:
data:
id: '5'
type: user
created_by:
data:
id: '5'
type: user
activity_type:
data:
id: '1'
type: activity_type
contactable:
data:
id: '101'
type: prospect
invoice:
data:
id: '1'
type: invoice
meta:
total_pages: 1
limit_per_page: 25
total_entries: 8
links:
self: /v1/expenses?page=1
'401':
description: Unauthorized - missing or invalid OAuth 2.0 bearer token
'429':
description: Too Many Requests - the per-firm rate limit was exceeded; a Retry-After header is returned
headers:
Retry-After:
description: Seconds to wait before retrying
schema:
type: integer
post:
operationId: createExpense
summary: Create Expense
description: A specific Time Entry in Lawmatics
tags:
- Payment Expenses
requestBody:
required: true
content:
multipart/form-data:
schema:
type: object
properties:
billable:
type: string
contactable_type:
type: string
contactable_id:
type: string
cost_cents:
type: string
description:
type: string
created_by_id:
type: string
user_id:
type: string
expensed_at:
type: string
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
examples:
createExpense:
summary: Create Expense
value:
data:
id: '34'
type: expense
attributes:
description: Postage
duration: 61
is_billable: true
is_flat_fee: false
relationships:
staff:
data:
id: '2'
type: user
contactable:
data:
id: '12'
type: prospect
activity_type:
data:
id: '1'
type: activity_type
invoice:
data: null
'401':
description: Unauthorized - missing or invalid OAuth 2.0 bearer token
'429':
description: Too Many Requests - the per-firm rate limit was exceeded; a Retry-After header is returned
headers:
Retry-After:
description: Seconds to wait before retrying
schema:
type: integer
/v1/expenses/{expense_id}:
get:
operationId: getExpense
summary: Expense
description: A specific Time Entry in Lawmatics
tags:
- Payment Expenses
parameters:
- name: expense_id
in: path
required: true
description: The expense id
schema:
type: string
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
examples:
getExpense:
summary: GET Expense
value:
data:
id: '9'
type: time_entry
attributes:
description: null
duration: 0
is_billable: true
is_flat_fee: false
relationships:
staff:
data:
id: '1'
type: user
contactable:
data: null
activity_type:
data: null
invoice:
data: null
'401':
description: Unauthorized - missing or invalid OAuth 2.0 bearer token
'429':
description: Too Many Requests - the per-firm rate limit was exceeded; a Retry-After header is returned
headers:
Retry-After:
description: Seconds to wait before retrying
schema:
type: integer
put:
operationId: updateExpense
summary: Update Expense
description: A specific Time Entry in Lawmatics
tags:
- Payment Expenses
parameters:
- name: expense_id
in: path
required: true
description: The expense id
schema:
type: string
requestBody:
required: true
content:
multipart/form-data:
schema:
type: object
properties:
billable:
type: string
description:
type: string
contactable_type:
type: string
contactable_id:
type: string
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
examples:
updateExpense:
summary: Update Expense
value:
data:
id: '35'
type: expense
attributes:
description: Postage
duration: 200
is_billable: false
is_flat_fee: true
relationships:
staff:
data:
id: '2'
type: user
contactable:
data: null
activity_type:
data:
id: '1'
type: activity_type
invoice:
data: null
'401':
description: Unauthorized - missing or invalid OAuth 2.0 bearer token
'429':
description: Too Many Requests - the per-firm rate limit was exceeded; a Retry-After header is returned
headers:
Retry-After:
description: Seconds to wait before retrying
schema:
type: integer
delete:
operationId: deleteExpense
summary: Expense
description: A specific Time Entry in Lawmatics
tags:
- Payment Expenses
parameters:
- name: expense_id
in: path
required: true
description: The expense id
schema:
type: string
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
examples:
deleteExpense:
summary: DELETE Expense
value:
data:
id: '9'
type: expense
attributes:
description: null
duration: 0
is_billable: true
is_flat_fee: false
relationships:
staff:
data:
id: '1'
type: user
contactable:
data: null
activity_type:
data: null
invoice:
data: null
'401':
description: Unauthorized - missing or invalid OAuth 2.0 bearer token
'429':
description: Too Many Requests - the per-firm rate limit was exceeded; a Retry-After header is returned
headers:
Retry-After:
description: Seconds to wait before retrying
schema:
type: integer
components:
securitySchemes:
oauth2:
type: oauth2
description: OAuth 2.0 authorization code grant. Register a developer app at https://app.lawmatics.com/settings/developers (developer settings must be enabled by Lawmatics support). Access tokens are non-expiring; no refresh tokens are issued and scopes are not supported.
flows:
authorizationCode:
authorizationUrl: https://app.lawmatics.com/oauth/authorize
tokenUrl: https://api.lawmatics.com/oauth/token
scopes: {}
bearerAuth:
type: http
scheme: bearer
description: 'The OAuth 2.0 access token is sent as `Authorization: Bearer <access_token>`.'
externalDocs:
description: Official Lawmatics RESTful API documentation (Postman)
url: https://docs.lawmatics.com/
x-provenance:
generated: '2026-08-13'
method: derived
publisher: API Evangelist
source: https://docs.lawmatics.com/api/collections/26379991/2sA3JM7gbw?segregateAuth=true&versionTag=latest
source_type: Postman collection published by Lawmatics as its official API documentation
source_file: postman/lawmatics-oauth-api.postman_collection.json
note: 'NOT published by Lawmatics. Lawmatics publishes no OpenAPI. Every path, method, parameter, request example and response example in this document was converted mechanically from the provider-published Postman collection "Lawmatics OAuth API v1.22.0"; nothing was invented. Schemas are typed as generic objects because the collection carries examples, not JSON Schema. The server URL is the base documented in the collection Param Guide (https://api.lawmatics.com), not the collection''s disabled {{host}} placeholder. The 401 and 429 responses added to every authenticated operation are the provider-documented, globally applicable responses: the collection''s auth guide states a per-firm rate limit applies to all endpoints and returns 429 with a Retry-After header, and https://api.lawmatics.com/v1/contacts was observed returning 401 unauthenticated on 2026-08-13.'