How many countries are supported?

The MCP supports business day calculations for over 50 countries.

Does it handle different weekend structures?

Yes, it supports various weekend patterns, including the Friday-Saturday weekend used in parts of the Middle East.

Can I add my own holidays?

Yes, you can provide custom holiday overrides using JSON input.

Which AI clients can use this MCP?

You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.

How do I use it with my existing workflow?

Once you connect it through Vinkius, your agent can call the capabilities directly during your normal chat or coding sessions.

How does the capability handle different weekend structures?

The capability automatically applies regional rules based on the countryCode. For example, it uses a Saturday-Sunday pattern for the US and a Friday-Saturday pattern for many Middle Eastern countries.

Can I add my own holidays to the calculation?

Yes, you can provide a JSON array of ISO date strings in the customHolidaysJson parameter to treat specific dates as non-working days.

What happens if I provide an invalid country code?

If the countryCode is unrecognized, the capability will return an error message describing the failure.

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Connect Business Day Calculator to ChatGPT and Claude

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Handle global workday math without manual calendar checks.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 5 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through Business Day Calculator.

01
Count business days
This capability counts the number of business days between two specific dates.
02
Subtract business days
Use this to subtract a set number of business days from a given date.
03
Add business days
This capability adds a specific number of business days to a date to find a future deadline.

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through Business Day Calculator.

04
Find next business day
This capability identifies the very next available business day after a chosen date.
05
Get workday range
This capability generates a full list of all business days within a specified date range.

Real work

What teams actually run

Global Project Scheduling

Calculate a delivery date for a client in the UK when your team is based in the US.

Workforce Capacity Planning

Determine how many actual working days are available in a month for a specific country.

Contractual Deadline Tracking

Find the exact date a 30-business-day notice period expires in a specific region.

Audit and Reporting

Count the specific business days spent on a project to verify labor costs.

One connector, every AI

Business Day Calculator works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Business Day Calculator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

729ms average. Fast in production.

Business Day Calculator is checked daily against the live service.

Daily averagePeak 1078ms

Oct 3Today

Fastest day: 550ms
Slowest day: 1078ms
14-day trend: Slowing+36%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 5 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Business Day Calculator, so you can see the experience inside your AI.

It does not authenticate your account with Business Day Calculator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Business Day Calculator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_FK0N2YSyXRAHUmFmMKKcPOwzacRT18rbYpSFwJdm/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Business Day Calculator capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "business-day-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_FK0N2YSyXRAHUmFmMKKcPOwzacRT18rbYpSFwJdm/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Business Day Calculator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Business Day Calculator owners hand off.

This MCP is built for professionals managing timelines across different time zones and regions.

01
Project Managers
They hand off deadline calculations and timeline projections to the agent.
02
Supply Chain Coordinators
They use the agent to calculate shipping and processing windows across global territories.
03
Financial Analysts
They rely on the agent to determine exact business day counts for settlement or reporting periods.

FAQ

Questions Business Day Calculator owners ask.

01
How many countries are supported?
The MCP supports business day calculations for over 50 countries.
02
Does it handle different weekend structures?
Yes, it supports various weekend patterns, including the Friday-Saturday weekend used in parts of the Middle East.
03
Can I add my own holidays?
Yes, you can provide custom holiday overrides using JSON input.
04
Which AI clients can use this MCP?
You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
05
How do I use it with my existing workflow?
Once you connect it through Vinkius, your agent can call the capabilities directly during your normal chat or coding sessions.
06
How does the capability handle different weekend structures?
The capability automatically applies regional rules based on the countryCode. For example, it uses a Saturday-Sunday pattern for the US and a Friday-Saturday pattern for many Middle Eastern countries.
07
Can I add my own holidays to the calculation?
Yes, you can provide a JSON array of ISO date strings in the customHolidaysJson parameter to treat specific dates as non-working days.
08
What happens if I provide an invalid country code?
If the countryCode is unrecognized, the capability will return an error message describing the failure.

Explore

More in Productivity

Connect Business Day Calculator to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Count business days

Subtract business days

Add business days

04-05

Find next business day

Get workday range

What teams actually run

Global Project Scheduling

Workforce Capacity Planning

Contractual Deadline Tracking

Audit and Reporting

Building your own app? The connector is yours to use.

Business Day Calculator Connector

Claude Desktop

Project Managers

Supply Chain Coordinators

Financial Analysts

How many countries are supported?

Does it handle different weekend structures?

Can I add my own holidays?

Which AI clients can use this MCP?

How do I use it with my existing workflow?

How does the capability handle different weekend structures?

Can I add my own holidays to the calculation?

What happens if I provide an invalid country code?

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