Integration
Connect Harvest to OpenHolidays API
When something happens in Harvest, your agent does the next thing in OpenHolidays API. Describe it and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Harvest and OpenHolidays API to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiAny client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What Harvest can start in OpenHolidays API
When New Client in Harvest
then Find Public Holidays by Date in OpenHolidays API
When New Contact in Harvest
then Find School Holidays by Date in OpenHolidays API
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with Harvest and OpenHolidays API
Triggers and actions 16 triggers · 19 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
Action
Find Public Holidays by Datereturns public holidays from ALL countries on a given date.
Action
Find School Holidays by Datereturns school holidays from ALL countries on a given date.
Action
List Countriesreturns the list of all supported countries (isoCode + localized names).
Action
List Languagesreturns the list of all languages used in the API's localized name fields.
Action
List Public HolidaysReturns the list of public holidays for a given country and date range (countryIsoCode, validFrom, validTo, languageIsoCode).
Action
List School Holidaysreturns the list of official school holidays for a given country and date range (countryIsoCode, validFrom, validTo, languageIsoCode, subdivisionCode).
Action
List Subdivisionsreturns the list of relevant subdivisions (states/regions) for a supported country, used as the subdivisionCode param on School Holidays calls.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
More from Harvest
Harvest to TimeeroTimeero is a mileage and GPS time tracking app for mobile teams.
Harvest to HubSpotHubSpot is your all-in-one stop for all of your marketing software needs.
Harvest to SalesforceSalesforce is a leading enterprise customer relationship management (CRM) platform.
Harvest to SlackSlack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...
Harvest to GmailGmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...
Harvest to MailchimpMailchimp marketing automation and email platform.
More into OpenHolidays API
HubSpot to OpenHolidays APIHubSpot is your all-in-one stop for all of your marketing software needs.
Salesforce to OpenHolidays APISalesforce is a leading enterprise customer relationship management (CRM) platform.
Slack to OpenHolidays APISlack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...
Google Sheets to OpenHolidays APIGoogle Sheets
Gmail to OpenHolidays APIGmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...
Google Calendar to OpenHolidays APIGoogle Calendar is a time management tool providing scheduling features, event reminders, and integration...
Questions
Harvest and OpenHolidays API, answered
What can start an automation from Harvest?
Any of Harvest's 16 triggers in the catalog, including New Client, New Contact, New Expense and New Invoice. Describe the moment in plain language and your agent picks the right one.
What can your agent do in OpenHolidays API when something happens in Harvest?
Any of OpenHolidays API's 7 actions, including Find Public Holidays by Date, Find School Holidays by Date, List Countries and List Languages. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from OpenHolidays API to Harvest?
OpenHolidays API has no triggers in the catalog today, so automations start in Harvest. If you need the other direction, ask: your agent reads OpenHolidays API's API documentation and adds it.
Do I have to build a connector for Harvest or OpenHolidays API?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.