What is the K-factor?

The K-factor (Viral Coefficient) represents the average number of new users generated by a single existing user. It is calculated by multiplying the average number of invitations sent per user by the conversion rate of those invitees.

How do I know if my product is viral?

A K-factor greater than 1 indicates exponential growth (Viral). A K-factor of exactly 1 represents steady, linear growth (Critical), and a K-factor below 1 means the viral loop will eventually stop without external input (Sub-critical).

Can I project future user growth?

Yes, by using the `forecast_growth_trajectory` tool, you can simulate and view the projected total user population for a specific number of future growth cycles.

Viral Coefficient Calculator MCP Connector for Claude

A+

Calculate K-factor, growth status, and project user base expansion through viral loops.

3 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

The Viral Coefficient Calculator is a specialized tool for analyzing product virality. By using the evaluate_virality tool, you can determine your K-factor and growth classification (Sub-critical, Critical, or Viral). Use estimate_doubling_period to find out how many cycles are needed to double your user base, and forecast_growth_trajectory to project population expansion over multiple future cycles. This MCP connects AI agents directly to precise viral growth modeling.

viralityk-factorgrowthforecastinganalytics

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_b22lDViEB1htA1wElX8gROaqII9JIxyfNJ6DzNU1/mcp

② Claude Code (terminal)

claude mcp add --transport http viral-coefficient-calculator https://edge.vinkius.com/vk_preview_b22lDViEB1htA1wElX8gROaqII9JIxyfNJ6DzNU1/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "viral-coefficient-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_b22lDViEB1htA1wElX8gROaqII9JIxyfNJ6DzNU1/mcp"
    }
  }
}

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