Build it
What do you want Harvest and Previsto to do together?
Describe it and your agent reads both APIs, builds the automation, tests every branch and ships it. The list below is what exists today, not the limit.
Ask the assistant
You'll sign in before anything runs. What you typed comes with you.
Or work from Claude Code
Install the APIANT plugin for Claude Code and build, edit, test and read run history from your terminal. Every plan gets this, including free, and it spends no assistant credits.
Connect Claude CodeEverything your agent can do with Harvest and Previsto
Triggers and actions 21 triggers · 25 actions
Trigger
Invoice PaidTriggers when an invoice is fully paid.
Trigger
Invoice SentTriggers when an invoice is sent or marked as sent.
Trigger
New ClientTriggers when a new client is added.
Trigger
New ContactTriggers when new contact is added.
Trigger
New ExpenseTriggers when a new expense is added.
Trigger
New InvoiceTriggers when an invoice is created.
Trigger
New ProjectTriggers when a project is created.
Trigger
New TaskTriggers when a new task is added.
Trigger
New Time EntryTriggers when a time entry is created.
Trigger
New UserTriggers when a new User is added.
Trigger
New User AssignmentTriggers when a user is assigned to a project.
Trigger
Timer StartedTriggers when a timer is started.
Trigger
Timer StoppedTriggers when a timer is stopped.
Trigger
Updated ClientTriggers when a client is updated.
Trigger
Updated InvoiceTriggers when an invoice is updated.
Trigger
Updated Time EntryTriggers when a time entry is updated.
Action
Create ClientCreates a Client
Action
Create ContactCreates a Contact
Action
Create ProjectCreates a Project
Action
Create TaskCreates a Task and optionally assigns it to a project
Action
Create Time EntryCreates a Time Entry with duration
Action
Create Time Entry (Start & End Times)Creates a Time Entry with start and end times
Action
Find ClientFinds a client by name or ID
Action
Find InvoiceFinds an invoice by ID
Action
Find ProjectFinds a project by name
Action
Find TaskFinds a task by name
Action
Start TimerCreates and starts a timer for a given date
Action
Stop TimerStops any running timers
Trigger
Completed AssignmentTriggers when an assignment is marked as completed in Previsto.
Trigger
Created AgreementTriggers when a new service agreement is created in Previsto.
Trigger
Created AssignmentTriggers when a new assignment is created in Previsto.
Trigger
Created ContactTriggers when a new contact is created in your Previsto account, and hands on that contact's details.
Trigger
Updated ContactTriggers when a contact is created or changed in your Previsto account, and hands on that contact's details.
Action
Create AgreementCreates a service agreement in Previsto for one of your contacts, setting the work description, expected duration, price and how often it repeats.
Action
Create AssignmentCreates an assignment in Previsto for a customer and returns the created assignment.
Action
Create ContactCreates a contact in Previsto with the name, address and billing details you supply, and returns the new contact including its id.
Action
Delete agreementDeletes a service agreement from Previsto.
Action
Delete assignmentDeletes an assignment from Previsto.
Action
Delete contactDeletes a contact from Previsto.
Action
Get accountReturns a single Previsto account, including its contact details, roles and location.
Action
Get agreementRetrieves a single service agreement from Previsto, with its description, amount, schedule and linked contact.
Action
Get assignmentReturns one assignment from Previsto, including its contact, status, planned time, address and the tasks it covers.
Action
Get contactReturns a single Previsto contact, including its address, billing settings and notification preferences.
Action
List contactsReturns the contacts in your Previsto account, optionally narrowed to a name, email address, reference number or archived state.
Action
Update agreementUpdates a service agreement in Previsto and returns the updated agreement.
Action
Update contactUpdates an existing Previsto contact — its name, address, contact details, billing settings and your own extra information.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.