Connect Harvest to The Calendar

Both apps 33Harvest 28The Calendar 5

• Trigger
  Invoice Paid

  Triggers when an invoice is fully paid.

• Trigger
  Invoice Sent

  Triggers when an invoice is sent or marked as sent.

• Trigger
  New Client

  Triggers when a new client is added.

• Trigger
  New Contact

  Triggers when new contact is added.

• Trigger
  New Expense

  Triggers when a new expense is added.

• Trigger
  New Invoice

  Triggers when an invoice is created.

• Trigger
  New Project

  Triggers when a project is created.

• Trigger
  New Task

  Triggers when a new task is added.

• Trigger
  New Time Entry

  Triggers when a time entry is created.

• Trigger
  New User

  Triggers when a new User is added.

• Trigger
  New User Assignment

  Triggers when a user is assigned to a project.

• Trigger
  Timer Started

  Triggers when a timer is started.

• Trigger
  Timer Stopped

  Triggers when a timer is stopped.

• Trigger
  Updated Client

  Triggers when a client is updated.

• Trigger
  Updated Invoice

  Triggers when an invoice is updated.

• Trigger
  Updated Time Entry

  Triggers when a time entry is updated.

• Action
  Create Client

  Creates a Client

• Action
  Create Contact

  Creates a Contact

• Action
  Create Project

  Creates a Project

• Action
  Create Task

  Creates a Task and optionally assigns it to a project

• Action
  Create Time Entry

  Creates a Time Entry with duration

• Action
  Create Time Entry (Start & End Times)

  Creates a Time Entry with start and end times

• Action
  Find Client

  Finds a client by name or ID

• Action
  Find Invoice

  Finds an invoice by ID

• Action
  Find Project

  Finds a project by name

• Action
  Find Task

  Finds a task by name

• Action
  Start Timer

  Creates and starts a timer for a given date

• Action
  Stop Timer

  Stops any running timers

• Action
  Get country holidays

  Return the list of public holidays for a given country and year. GET https://the-calendar.net/api/holidays/by-country/{country-slug}/{year}.json (~30 countries, 2026 published, e.g. united-kingdom, canada, australia, germany, japan). Response: {country, kind, year, source, holidays:[{name,date,observed,weekday,note}]}. No auth.

• Action
  Get finance calendar

  Return a US finance-related date calendar for a given year and calendar type: fomc (Fed meeting dates), tax-deadlines, or market-holidays (stock market closures). GET https://the-calendar.net/api/finance/{fomc|tax-deadlines|market-holidays}/{year}.json. No auth.

• Action
  Get sports schedule

  Return key schedule/calendar dates for a sports league or team. GET https://the-calendar.net/api/sports/{slug}.json where slug is one of: nfl-schedule, nba-schedule, mlb-schedule, nhl-schedule, mls-schedule, premier-league-schedule, la-liga-schedule, champions-league-schedule, f1-2026-calendar, real-madrid-calendar, fc-barcelona-calendar, manchester-united-calendar. No auth.

• Action
  Get US federal holidays

  Return the list of US federal holidays for a given year. GET https://the-calendar.net/api/holidays/us-federal/{year}.json (years 2025-2028 published). Response: {country, kind, year, source, holidays:[{name,date,observed,weekday,note}]}. No auth.

• Action
  Get US state holidays

  Return the list of state-observed holidays for a given US state and year. GET https://the-calendar.net/api/holidays/by-state/{state-slug}/{year}.json (all 50 states, 2026 published). Response: {country, kind, year, source, holidays:[{name,date,observed,weekday,note}]}. No auth.

No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.