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Connect Deadline Calculator to ChatGPT, Claude and Gemini

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. Get exact completion dates by accounting for holidays and weekends.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

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.

A futuristic MCP client docking bay
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 · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through Deadline Calculator.

  1. 01

    Business deadline tool

    This capability calculates a deadline by adding business days to a start date. It automatically skips weekends and regional holidays.

  2. 02

    Calendar deadline tool

    This capability finds an end date by adding a set number of uninterrupted calendar days to a start date.

  3. 03

    Holiday registry tool

    This capability fetches a list of recognized holidays for a specific region and year.

Real work

What teams actually run

01

Project Scheduling

Calculate when a 15-day development sprint will end by skipping weekends.

02

International Logistics

Determine shipping arrival dates by accounting for holidays in Germany or France.

03

Compliance Deadlines

Find the exact business day deadline for a regulatory filing in the UK.

04

Holiday Planning

Check the holiday registry to see which days will impact your team's availability next year.

Automate a task

Put Deadline Calculator to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Deadline 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.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

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

You don't need a client to put Deadline 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

743ms average. Fast in production.

Deadline Calculator is checked daily against the live service.

Daily averagePeak 1084ms
Oct 3Today
Fastest day
534ms
Slowest day
1084ms
14-day trend
Improving-17%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 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 Deadline Calculator, so you can see the experience inside your AI.

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

Deadline Calculator Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_wXHcMc6mvs6PJNtadmhUMeWcfHpR3eLXsUt2UrOD/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Deadline Calculator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "deadline-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_wXHcMc6mvs6PJNtadmhUMeWcfHpR3eLXsUt2UrOD/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 Deadline Calculator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Deadline Calculator owners hand off.

This MCP is built for anyone managing timelines where weekends and public holidays change the math.

  • 01

    Project Managers

    They hand off task duration and start dates to the AI to get realistic delivery dates.

  • 02

    Operations Leads

    They use it to schedule logistics and supply chain movements across different regions.

  • 03

    Legal Professionals

    They use it to calculate filing deadlines that depend on business days.

FAQ

Questions Deadline Calculator owners ask.

  • 01

    Which countries' holidays are supported?

    The MCP currently supports regional holidays for the US, UK, Germany, and France.

  • 02

    Can I use this for simple day counting?

    Yes, you can use the calendar_deadline_tool to add days without skipping weekends or holidays.

  • 03

    How does it handle weekends?

    When you use the business_deadline_tool, the math automatically skips Saturdays and Sundays.

  • 04

    Does it work with Claude or Cursor?

    Yes, it works with any MCP-compatible client like Claude, Cursor, or Windsurf.

  • 05

    Can I check holidays for a specific year?

    Yes, the holiday_registry_tool lets you fetch the holiday list for a specific region and year.

  • 06

    How does the business day calculation work?

    The business_deadline_tool iterates through each day starting from your start date. It only increments the count when it encounters a day that is not a weekend (Saturday or Sunday) and not a holiday listed in the registry for your chosen region.

  • 07

    Which regions are supported for holidays?

    Currently, the server supports holiday registries for the United States (US), United Kingdom (GB), Germany (DE), and France (FR).

  • 08

    Can I verify specific holiday dates?

    Yes, you can use the holiday_registry_tool to fetch a complete list of recognized holidays for any supported region and year.

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