How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Mavenlink Billing Milestones API

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 milestones in a project is known as the [Billing Schedule](https://knowledge.kantata.com/hc/en-us/articles/35123275585947).

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

Tagged areas include Billing Milestones. 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 5 operations across 2 paths, and defines 7 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.

5 operations 2 paths 7 schemas 1 DELETE2 GET1 POST1 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 Billing Milestones 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 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.

Billing Milestones 5

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 milestones in a project…

GET
/billing_milestones
Fetching a list of Billing Milestones
Get Billing Milestones 17 params → 200400401403404422503
POST
/billing_milestones
Creating one or many Billing Milestones
Create Billing Milestone 1 param body → 200400401403404422503
GET
/billing_milestones/{id}
Fetching a single Billing Milestone
Get Billing Milestone 2 params → 200400401403404422503
PUT
/billing_milestones/{id}
Updating an existing Billing Milestone
Update Billing Milestone 2 params body → 200400401403404422503
DELETE
/billing_milestones/{id}
Deleting an existing Billing Milestones
Delete Billing Milestone 1 param → 204400401403404422503

Schemas 7

The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are Workspace (88 properties), Story (70 properties), Invoice (27 properties), ExternalReference (14 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
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
Story
object
Stories (known as [tasks](https://knowledge.kantata.com/hc/en-us/articles/202806550-Tasks-Overview) in the UI) are the tasks, deliverables, issues, and milesto…
70 properties
Workspace
object
Workspaces (also called projects) represent the space in which Kantata OX users plan, communicate, and collaborate.
88 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-billing-milestones-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

This is an independent, third-party profile of Mavenlink Billing Milestones 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.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.