Calendar

Non-Working Days integrations

Connect Non-Working Days to any other app, or use it from your AI client over MCP. Non-Working Days (isdayoff.ru) is a production-calendar service that says whether a given date is a working day. Callers can check a single date, request a whole month or year as a compact string of day flags, and choose the country — Russia, other CIS states, the USA and more — with options to treat pre-holiday short days and covid non-working days distinctly. It suits SLA calculations, payroll and business-day date arithmetic. No credentials required.

No account neededisdayoff.ru
5 actions

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 to automate with Non-Working Days?

Ask the assistant

You'll sign in before anything runs. What you typed comes with you.

Connect your AI client

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)
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)

Popular

Non-Working Days with the apps people pair it with most

Pair it

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What your agent can do with Non-Working Days

Triggers and actions 5 actions

  • Action
    Check leap year

    Check whether a given year is a leap year.

  • Action
    Find date range statuses

    Get the working/non-working day status for every day in an arbitrary date range (up to 366 days).

  • Action
    Get day status

    Check whether a given date is a working day, non-working day, shortened day, or holiday, with optional country, six-day-week, COVID and holiday-marking parameters.

  • Action
    List month statuses

    Get the working/non-working day status for every day in a given month.

  • Action
    List year statuses

    Get the working/non-working day status for every day in a given year.

Related apps

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What our customers say

Questions

Non-Working Days, answered

Is there a Non-Working Days MCP server?

APIANT's MCP server at https://mcp.apiant.ai works with Non-Working Days. 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 Non-Working Days actions on demand, or have APIANT build, test and run automations that use Non-Working Days. Nothing to install.

What can your agent do in Non-Working Days?

Any of Non-Working Days's 5 actions, including Check leap year, Find date range statuses, Get day status and List month statuses. Your agent maps the data both ways and tests every scenario before it ships.

Can I use Non-Working Days directly from Claude, ChatGPT or Cursor?

Yes. Connect your AI client to APIANT once and it works with Non-Working Days two ways. Ask it to do something in Non-Working Days 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 Non-Working Days API?

No. APIANT connects to the Non-Working Days API for you. Describe what you want in plain language and your agent builds it on the Non-Working Days triggers and actions in the catalog. If you need an endpoint that is not there yet, your agent reads the Non-Working Days API documentation and adds it.

Which apps can Non-Working Days connect to?

Any app in the catalog; the list on this page pairs Non-Working Days 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.