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ClaudeChatGPTPerplexityGeminiMicrosoft CopilotRaycastMeta AIGrokZ.aiQwenKimi
DeepSeekMistralCursorVS CodeWindsurfJetBrainsClineLovableVercel AI SDKLangChain

Use Test Duration Calculator with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Calculate required A/B test duration, sample sizes, and experiment risk levels.

Included with plan

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.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 3 capabilities

The complete Test Duration Calculator capability set.

These are the exact actions your AI can choose when you ask it to work with Test Duration Calculator.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through Test Duration Calculator.

  1. 01

    Calculate sample size

    Calculate required sample size for an experiment

  2. 02

    Estimate timeline

    Estimate experiment duration

  3. 03

    Get finalization details

    Get experiment end date and risk assessment

Observed, not estimated

627ms average. Fast in production.

Test Duration Calculator is checked daily against the live service.

Daily averagePeak 778ms
Aug 20Today
Fastest day
474ms
Slowest day
778ms
14-day trend
Slowing+19%

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 Test Duration Calculator, so you can see the experience inside your AI.

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

Test Duration Calculator Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_O1AMvmlC1UbiIg5EToBCmgYLv4CFNyrsTcP8VO1g/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 — Test Duration Calculator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "test-duration-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_O1AMvmlC1UbiIg5EToBCmgYLv4CFNyrsTcP8VO1g/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

FAQ

Questions Test Duration Calculator owners ask.

  • 01

    How does the capability handle day-of-week bias?

    The capability uses estimate_timeline to round up the required duration to the nearest full 7-day cycle, ensuring that weekly seasonality does not bias your results.

  • 02

    What is considered a high-risk experiment duration?

    Any experiment projected to run longer than 4 weeks is flagged as high risk by get_finalization_details due to potential external noise like holidays or marketing changes.

  • 03

    Can I calculate sample size for multiple variants?

    Yes, by providing the total number of experimental groups to calculate_sample_size, the capability will determine the cumulative required samples.

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