How accurate are the predictions?

Predictions are based on your provided cycle and luteal phase data. Accuracy improves when using recent history with `estimate_irregular_window_range`. Tools available: `your_tool_name`.

Can I use this for irregular cycles?

Yes, the `estimate_irregular_window_range` tool is specifically designed to calculate a wider window based on your last 6 cycle lengths.

What inputs are required?

You need the start date of your last period and your average cycle length.

Ovulation Fertile Window Calculator MCP Connector for Claude

Predict ovulation and fertile windows based on cycle tracking.

0 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides precise biological predictions for menstrual cycles. Using predict_standard_cycle, you can estimate your next ovulation and period due dates based on average cycle and luteal phase lengths. For more complex tracking, calculate_fertile_window_bounds identifies the exact window of peak fertility, while estimate_irregular_window_range uses recent history to provide a safety range for irregular cycles.

Available Tools

your_tool_name

ovulationfertilitymenstrual-cycleperiod-trackerhealth-techreproductive-health

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_912mqHby1T6YtNi6cZEid6JlqbLXfffVaQffXP3P/mcp

② Claude Code (terminal)

claude mcp add --transport http ovulation-fertile-window-calculator https://edge.vinkius.com/vk_preview_912mqHby1T6YtNi6cZEid6JlqbLXfffVaQffXP3P/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "ovulation-fertile-window-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_912mqHby1T6YtNi6cZEid6JlqbLXfffVaQffXP3P/mcp"
    }
  }
}

Get full access on Vinkius

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