Mavenlink Kantata OX API

Name: Kantata OX API
Brand: Kantata OX API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentProductivityTask Managementbearer495 EndpointsREST

For Agents

Manage Kantata OX project workspaces, time entries, expenses, invoices, and resource assignments. Suited to professional services automation agents that need to log time, bill clients, and reconcile project financials.

Use for: I need to log billable hours against a Kantata project, Create a new workspace for a client engagement, List all expenses awaiting approval this week, Generate an invoice from approved time entries for a workspace

Not supported: Does not handle CRM, marketing automation, or general accounting - use for professional services project management, time tracking, and client invoicing only.

Kantata OX (formerly Mavenlink) is a professional services automation platform that exposes a RESTful API for managing workspaces, time entries, expenses, invoices, and project resourcing. Agents can read and update project data, log billable hours, generate invoices from time entries, and synchronise resource allocations across hundreds of resource types. The API covers 495 operations spanning project collaboration, financials, and workforce planning, making it suited to deep services-org integrations rather than ad-hoc task tracking.

Jentic One on Github

Install Jentic One Beta

Connect the Kantata OX API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Kantata OX API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fmavenlink.com%2Fmavenlink" | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fmavenlink.com%2Fmavenlink" | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Kantata OX API.

Create and update project workspaces with custom fields and access groups

Log billable and non-billable time entries against assignments and tasks

Generate invoices from approved time entries and expense reports

Manage resource assignments and allocations across project schedules

Track expense categories, receipts, and reimbursement status

GET STARTED

Start building with Kantata OX API

Explore with Jentic One

View OpenAPI Document

Use Cases

Patterns agents use Kantata OX API for, with concrete tasks.

★ Automated Time Entry Logging

Capture daily billable hours from internal tooling and post them to the correct Kantata workspace and assignment. The Kantata OX API accepts time entries with workspace, user, story, and rate identifiers, validates them against project budgets, and returns the persisted record. This removes the need for consultants to manually enter time at the end of the week and keeps utilisation reports current.

Create a time entry of 4.5 hours against workspace 12345, story 67890, dated today, marked billable, with notes 'Discovery workshop with client'.

Invoice Generation from Time and Expenses

Roll up approved time entries and expenses for a workspace into a draft invoice for client billing. The API exposes invoice, time entry, and expense endpoints so agents can filter by approval status and date range, then assemble line items at the correct billing rates. This compresses month-end billing cycles from days to minutes for services teams running multiple concurrent engagements.

List all approved time entries for workspace 12345 between the first and last day of last month, group by user and rate card, and create a draft invoice with the resulting line items.

Resource Allocation Reporting

Surface who is over- or under-allocated across the next four weeks so staffing managers can rebalance assignments. The API returns assignments with start and end dates, allocation percentages, and user identifiers, which agents can aggregate against contracted hours. The result is a forward-looking utilisation view that highlights bench risk and overbooking before it becomes a problem.

Retrieve all assignments active in the next 28 days, calculate weekly hours per user, and return a list of users allocated above 110% or below 70% of their contracted capacity.

AI Agent for Project Status Briefings

Build an agent that produces weekly project briefings by querying workspace, time entry, expense, and budget endpoints. The agent searches Jentic for the relevant Kantata operations, loads their schemas, and executes calls scoped to the workspaces a stakeholder owns. The output is a digest of hours burned, budget remaining, and resource conflicts, delivered to Slack or email without manual report-building.

For workspaces owned by user_id 555, retrieve hours logged this week, total budget consumed to date, and any expenses pending approval, then format as a markdown digest.

Key Endpoints

495 endpoints — kantata ox (formerly mavenlink) is a professional services automation platform that exposes a restful api for managing workspaces, time entries, expenses, invoices, and project resourcing.

METHOD

PATH

DESCRIPTION

GET

/api/v1/workspaces

List all accessible workspaces

POST

/api/v1/time_entries

Create a time entry

GET

/api/v1/time_entries

List time entries with filters

POST

/api/v1/expenses

Create an expense record

GET

/api/v1/invoices

List invoices

GET

/api/v1/assignments

List resource assignments

GET

/api/v1/users

List users in the account

GET

/api/v1/workspaces

List all accessible workspaces

POST

/api/v1/time_entries

Create a time entry

GET

/api/v1/time_entries

List time entries with filters

POST

/api/v1/expenses

Create an expense record

GET

/api/v1/invoices

List invoices

GET

/api/v1/assignments

List resource assignments

GET

/api/v1/users

List users in the account

Why Jentic?

What agents get from Jentic-routed access to this vendor.

Setup

Wiring the Kantata OX API by hand means handling OAuth bearer tokens, pointing at the api.mavenlink.com host, and finding the right call among a large operation set yourself. Through Jentic you install once, import the Kantata OX API from the API Directory, store the bearer token once, and your agent calls it.

Permission scoping

Kantata's records such as time entries and expenses are created from the request body rather than pinned by a resource id in the URL path, so you limit the agent to the operations it needs, such as listing workspaces or logging a time entry. It calls only the operations you allow, so anything you leave out stays unreachable.

Credential isolation

Your Kantata OAuth bearer token is stored once, encrypted, by your own Jentic One instance and applied at execution time. It never enters the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'log billable time in Kantata' or 'list project workspaces', and Jentic returns the matching operation with its input schema so the agent calls the right endpoint without browsing developer.mavenlink.com.

FAQs

Specific to using Kantata OX API through Jentic.

What authentication does the Kantata OX API use?

The Kantata OX API uses OAuth 2.0 bearer tokens passed in the Authorization header. Through Jentic, the OAuth token is stored encrypted in your Jentic One instance and injected at execution time, so the agent never sees the raw token in its context.

Can I generate invoices from time entries with the Kantata OX API?

Yes. The /api/v1/time_entries endpoint returns approved time entries with workspace, user, and rate metadata, and /api/v1/invoices accepts line items derived from those entries. Agents typically filter time entries by approval status and date range, group by rate card, then post the assembled invoice.

What are the rate limits for the Kantata OX API?

Kantata OX enforces account-level rate limits that vary by plan tier and are documented at developer.mavenlink.com. The API returns standard 429 responses when limits are exceeded, with a Retry-After header to guide back-off. For batch reconciliation jobs, paginate aggressively and stagger writes.

How do I log a billable hour with the Kantata OX API through Jentic?

Search Jentic for 'log a billable time entry in Kantata', load the schema for POST /api/v1/time_entries, and execute with workspace_id, user_id, story_id, time_in_minutes, and billable=true. Jentic injects the OAuth token automatically.

Does the Kantata OX API support custom fields on workspaces?

Yes. Workspace, user, and story records all support custom field values via dedicated custom_field_values endpoints. Agents can read and update custom fields by id, which is essential for orgs that store engagement metadata like contract type or industry on the workspace itself.

Can the Kantata OX API surface resource utilisation?

Yes, via the assignments and time_entries endpoints. Assignments give planned allocation per user per workspace with date ranges; time entries give actuals. Aggregating both over a forward window lets agents flag over- or under-utilised consultants without exporting to a separate BI tool.

Can I limit what my agent is allowed to do with the Kantata OX API?

Yes. Because you self-host Jentic One, your own rules decide which Kantata OX operations and credentials the agent may use, so you can allow only what a task needs, such as listing workspaces or logging a time entry, while withholding invoice or expense creation. Kantata records like time entries and expenses are built from the request body rather than pinned by a resource id in the URL, so scoping happens at the operation level. The agent calls only the operations you permit, and anything you leave out stays unreachable.

Mavenlink Kantata OX API

Connect the Kantata OX API to your agent

Capabilities

Start building with Kantata OX API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs