--- title: "caldays integrations and MCP server - APIANT.ai" description: "Connect caldays to any other app, or use it from your AI client over MCP. caldays serves public holiday data for more than 195 countries." canonical: "https://apiant.ai/connections/caldays" --- # caldays integrations Connect caldays to any other app, or use it from your AI client over MCP. caldays serves public holiday data for more than 195 countries. Callers can list the supported countries and their subdivisions, retrieve all holidays for a country and year, check whether a specific date is a public holiday or working day, and read the next upcoming holidays. Each holiday carries its date, local and English name, and whether it is nationwide or regional. No credentials required. No account needed [caldays.com](https://caldays.com/) **4** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want to automate with caldays? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any 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.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### 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)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) Popular ## caldays with the apps people pair it with most - [ **HubSpot to caldays** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-caldays) - [ **Salesforce to caldays** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-caldays) - [ **Slack to caldays** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-caldays) - [ **Google Sheets to caldays** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-caldays) - [ **Gmail to caldays** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-caldays) - [ **Google Calendar to caldays** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-caldays) - [ **Google Drive to caldays** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-caldays) - [ **Mailchimp to caldays** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-caldays) Pair it ## Connect caldays with another app - [ **HubSpot to caldays**](https://apiant.ai/connect/hubspot-to-caldays) - [ **Salesforce to caldays**](https://apiant.ai/connect/salesforce-to-caldays) - [ **Slack to caldays**](https://apiant.ai/connect/slack-to-caldays) - [ **Google Sheets to caldays**](https://apiant.ai/connect/google-sheets-to-caldays) - [ **Gmail to caldays**](https://apiant.ai/connect/gmail-to-caldays) - [ **Google Calendar to caldays**](https://apiant.ai/connect/google-calendar-to-caldays) - [ **Google Drive to caldays**](https://apiant.ai/connect/google-drive-to-caldays) - [ **Mailchimp to caldays**](https://apiant.ai/connect/mailchimp-to-caldays) - [ **Stripe to caldays**](https://apiant.ai/connect/stripe-to-caldays) - [ **Shopify to caldays**](https://apiant.ai/connect/shopify-to-caldays) - [ **QuickBooks Online to caldays**](https://apiant.ai/connect/quickbooks-online-to-caldays) - [ **Pipedrive to caldays**](https://apiant.ai/connect/pipedrive-to-caldays) - [ **ActiveCampaign to caldays**](https://apiant.ai/connect/activecampaign-to-caldays) - [ **Notion to caldays**](https://apiant.ai/connect/notion-to-caldays) - [ **Airtable to caldays**](https://apiant.ai/connect/airtable-to-caldays) - [ **Trello to caldays**](https://apiant.ai/connect/trello-to-caldays) - [ **Asana to caldays**](https://apiant.ai/connect/asana-to-caldays) - [ **JIRA to caldays**](https://apiant.ai/connect/jira-to-caldays) - [ **ClickUp to caldays**](https://apiant.ai/connect/clickup-to-caldays) - [ **Zoom to caldays**](https://apiant.ai/connect/zoom-to-caldays) - [ **Discord to caldays**](https://apiant.ai/connect/discord-to-caldays) - [ **Twilio to caldays**](https://apiant.ai/connect/twilio-to-caldays) - [ **SendGrid to caldays**](https://apiant.ai/connect/sendgrid-to-caldays) - [ **Outlook to caldays**](https://apiant.ai/connect/outlook-to-caldays) - [ **Intercom to caldays**](https://apiant.ai/connect/intercom-to-caldays) - [ **Freshdesk to caldays**](https://apiant.ai/connect/freshdesk-to-caldays) - [ **Klaviyo to caldays**](https://apiant.ai/connect/klaviyo-to-caldays) - [ **Brevo to caldays**](https://apiant.ai/connect/brevo-to-caldays) - [ **Typeform to caldays**](https://apiant.ai/connect/typeform-to-caldays) - [ **JotForm to caldays**](https://apiant.ai/connect/jotform-to-caldays) - [ **Calendly to caldays**](https://apiant.ai/connect/calendly-to-caldays) - [ **PandaDoc to caldays**](https://apiant.ai/connect/pandadoc-to-caldays) - [ **Webflow to caldays**](https://apiant.ai/connect/webflow-to-caldays) - [ **Wix to caldays**](https://apiant.ai/connect/wix-to-caldays) - [ **Instagram to caldays**](https://apiant.ai/connect/instagram-to-caldays) - [ **OpenAI to caldays**](https://apiant.ai/connect/openai-to-caldays) - [ **OneDrive to caldays**](https://apiant.ai/connect/onedrive-to-caldays) - [ **Google Docs to caldays**](https://apiant.ai/connect/google-docs-to-caldays) - [ **Ontraport to caldays**](https://apiant.ai/connect/ontraport-to-caldays) - [ **Freshworks CRM to caldays**](https://apiant.ai/connect/freshworks-crm-to-caldays) - [ **GoHighLevel to caldays**](https://apiant.ai/connect/gohighlevel-to-caldays) - [ **Capsule CRM to caldays**](https://apiant.ai/connect/capsule-crm-to-caldays) - [ **Copper to caldays**](https://apiant.ai/connect/copper-to-caldays) - [ **Streak to caldays**](https://apiant.ai/connect/streak-to-caldays) - [ **NetHunt CRM to caldays**](https://apiant.ai/connect/nethunt-crm-to-caldays) - [ **MINDBODY to caldays**](https://apiant.ai/connect/mindbody-to-caldays) - [ **PostgreSQL to caldays**](https://apiant.ai/connect/postgresql-to-caldays) - [ **MySQL to caldays**](https://apiant.ai/connect/mysql-to-caldays) - [ **Vercel to caldays**](https://apiant.ai/connect/vercel-to-caldays) - [ **PagerDuty to caldays**](https://apiant.ai/connect/pagerduty-to-caldays) - [ **Gravity Forms to caldays**](https://apiant.ai/connect/gravity-forms-to-caldays) - [ **HubSpot Enterprise to caldays**](https://apiant.ai/connect/hubspot-enterprise-to-caldays) - [ **Google Forms to caldays**](https://apiant.ai/connect/google-forms-to-caldays) - [ **Facebook Lead Ads to caldays**](https://apiant.ai/connect/facebook-lead-ads-to-caldays) - [ **monday.com to caldays**](https://apiant.ai/connect/monday-com-to-caldays) - [ **Google Ads to caldays**](https://apiant.ai/connect/google-ads-to-caldays) - [ **Google Tasks to caldays**](https://apiant.ai/connect/google-tasks-to-caldays) - [ **Telegram to caldays**](https://apiant.ai/connect/telegram-to-caldays) - [ **MailerLite to caldays**](https://apiant.ai/connect/mailerlite-to-caldays) - [ **Google Contacts to caldays**](https://apiant.ai/connect/google-contacts-to-caldays) What your agent can do with caldays ## Triggers and actions 4 actions - Action **Get world clock** Get current local time, DST-correct, for one or more cities and/or IANA time zones. - Action **List countries** List every country caldays covers, with its 2-letter code. - Action **List holidays for country** Get all public holidays for a country and year. - Action **List long weekends for country** List every 3+ day break (weekend + public holiday, plus bridge days worth booking off) for a country in a given year. ## Related apps - [ **Calendarific** REST API providing public, religious, and bank holiday data for over 230 countries and 3,300 states and...](https://apiant.ai/connections/calendarific) - [ **CalendarLink to caldays** CalendarLink creates add-to-calendar links to any calendar service and make sure your users don't forget...](https://apiant.ai/connect/calendarlink-to-caldays) - [ **Canada Holidays** Canadian statutory holidays by province and territory for any year, including the next upcoming holiday...](https://apiant.ai/connections/canada-holidays) - [ **Feriados API** Brazilian holidays API covering national, state, and municipal holidays for 5,570+ municipalities](https://apiant.ai/connections/feriados-api) - [ **Hebrew Calendar** Hebcal is a Jewish calendar service that converts dates and publishes holiday and observance times.](https://apiant.ai/connections/hebrew-calendar) - [ **LectServe** LectServe serves the Protestant liturgical calendar and its associated lectionary readings.](https://apiant.ai/connections/lectserve) - [ **Morgen to caldays** Morgen is an all-in-one app for your time management](https://apiant.ai/connect/morgen-to-caldays) - [ **Nager.Date** Nager.Date publishes public holiday data for more than 100 countries.](https://apiant.ai/connections/nager-date) [More in Calendar](https://apiant.ai/apps/calendar) Reviews ## What our customers say Questions ## caldays, answered ### ### Is there a caldays MCP server? APIANT's MCP server at https://mcp.apiant.ai works with caldays. Add that address to any AI client that takes a remote MCP server and sign in once in your browser. Your client can then run caldays actions on demand, or have APIANT build, test and run automations that use caldays. Nothing to install. ### ### What can your agent do in caldays? Any of caldays's 4 actions, including Get world clock, List countries, List holidays for country and List long weekends for country. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can I use caldays directly from Claude, ChatGPT or Cursor? Yes. Connect your AI client to APIANT once and it works with caldays two ways. Ask it to do something in caldays once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running on its own. A one-off action uses your plan's tasks the same way an automation step does. ### ### Do I need to write code against the caldays API? No. APIANT connects to the caldays API for you. Describe what you want in plain language and your agent builds it on the caldays triggers and actions in the catalog. If you need an endpoint that is not there yet, your agent reads the caldays API documentation and adds it. ### ### Which apps can caldays connect to? Any app in the catalog; the list on this page pairs caldays with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector. ### ### 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.