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Mavenlink Invoices API

Users can create Invoices in a Kantata OX project. An Invoice must have at least one line item (a time entry,expense, fixed fee item, or additional item). By default, the recipient of an invoice is the primary clientin the project. Manual formatting options are available to define the format and information that should be displayed on aninvoice.Invoices can only be created and viewed by participants with financial permission in a project.

Mavenlink Invoices API is one of 103 APIs that Mavenlink publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

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

This API exposes 7 operations across 4 paths, and defines 11 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://api.mavenlink.com/api/v1.

7 operations 4 paths 11 schemas 1 DELETE3 GET1 POST2 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.mavenlink.com/api/v1/
Authentication
API Key, OAuth 2.0
Terms of Service
Resource Areas
1

Authentication & Security 2

Mavenlink Invoices API declares 2 security schemes for authenticating requests. An API key is passed in the header as Bearer (BearerToken). It supports OAuth 2.0 (OauthSecurity) using the authorizationCode flow.

Paths & Operations 7

Across 4 paths, the API surfaces 7 operations — 1 DELETE, 3 GET, 1 POST, 2 PUT. Each is listed below with its method, path, parameters, and response codes.

Invoices 7

Users can create Invoices in a Kantata OX project. An Invoice must have at least one line item (a time entry, expense, fixed fee item, or additional item). By default, the recipie…

GET
/invoices
Fetching a list of Invoices
Get Invoices 24 params → 200400401403404422503
POST
/invoices
Creating a new Invoice
Create Invoice 1 param body → 200400401403404422503
GET
/invoices/next_invoice_number
Retrieve the next available invoice number.
Get Next Invoice Number → 200400401403404422503
GET
/invoices/{id}
Fetching a single Invoice
Get Invoice 2 params → 200400401403404422503
PUT
/invoices/{id}
Updating an existing Invoice
Update Invoice 2 params body → 200400401403404422503
DELETE
/invoices/{id}
Deleting an existing Invoice
Delete Invoice 1 param → 204400401403404422503
PUT
/invoices/{id}/cancel
Cancel an existing invoice.
Cancel Invoice 2 params → 200400401403404422503

Schemas 11

The contract defines 11 schemas that model the data the API accepts and returns. The most detailed are Workspace (88 properties), Invoice (27 properties), Expense (26 properties), TimeEntry (25 properties). Each schema is shown below with its type and property counts.

ExternalReference
object
External References allows users see which objects (one of Assignment, BillingMilestone, CustomField, CustomFieldChoice, CustomFieldSet, CustomFieldValue, Esti…
14 properties
FixedFeeItem
object
7 properties
Error
object
2 properties
BillingMilestone
object
Billing milestones allow you to set up billable items in a project that are separate from the Task Tracker work and have invoicing rules. A set of billing mile…
12 properties
AdditionalItem
object
6 properties
TimeEntry
object
This object allows you to manage Kantata OX time entries, depending on your permissions. Creating and updating time entries allows you to include time when inv…
25 properties
Workspace
object
Workspaces (also called projects) represent the space in which Kantata OX users plan, communicate, and collaborate.
88 properties
User
object
Users represent the individuals that are participating in Kantata OX projects. User objects are often returned as nested JSON objects within other returned ite…
20 properties
Expense
object
Expenses are non-time related costs incurred in a project. Once created, expenses can be included in generated invoices.
26 properties
Invoice
object
An Invoice is defined as a list of costs incurred during a Kantata OX project, which are billable to an end user.
27 properties
Errors
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

mavenlink-invoices-api-openapi.yml Raw ↑

Other APIs Mavenlink publishes across the network.

Kantata OX MCP Server
Kantata OX Developer Documentation Agent
Mavenlink Access Group Memberships API
Mavenlink Account Colors API
Mavenlink Account Invitations API
Mavenlink Account Locations API
Mavenlink Account Memberships API
Mavenlink Activations API
Mavenlink Assignments API
Mavenlink Attachments API
Mavenlink Backup Approver Associations API
Mavenlink Billable Utilizations API
Where this information came from

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