Use Rule of 72 Engine with your AI.
Connect your account once and let the AI you already use work with it, without building another integration. Compare precise investment doubling time against the Rule of 7lag approximation.
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.
Complete set · 3 capabilities
The complete Rule of 72 Engine capability set.
These are the exact actions your AI can choose when you ask it to work with Rule of 72 Engine.
01-03
3 capabilities in this set.
Part of 3 available through Rule of 72 Engine.
- 01
Get precision reliability
Check the reliability of the Rule of 72 shortcut
- 02
Get doubling comparison
G., 5) and returns precise vs estimated periods and error percentage. Compare exact doubling periods with Rule of 72 estimate
- 03
Get growth milestones
) with time and value. Generate growth milestones based on doubling intervals
Observed, not estimated
612ms average. Fast in production.
Rule of 72 Engine is checked daily against the live service.
- Fastest day
- 463ms
- Slowest day
- 773ms
- 14-day trend
- Slowing+24%
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 Rule of 72 Engine, so you can see the experience inside your AI.
It does not authenticate your account with Rule of 72 Engine. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Rule of 72 Engine Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_NS03I8i5i3uq954YWYa9kHanKQ0kkCvCgGTQeLwh/mcpClaude 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 — Rule of 72 Engine capabilities are ready to use.
{
"mcpServers": {
"rule-of-72-doubling-engine-mcp": {
"url": "https://edge.vinkius.com/vk_preview_NS03I8i5i3uq954YWYa9kHanKQ0kkCvCgGTQeLwh/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 Rule of 72 Engine owners ask.
- 01
How accurate is the Rule of 72 estimate?
The accuracy varies depending on the interest rate. You can use get_doubling_comparison to calculate the exact percentage error between the true logarithmic doubling time and the Rule of 72 approximation.
- 02
What milestones are included in the growth projection?
The get_growth_milestones capability tracks your investment through exponential expansion stages, specifically at 2x, 4x, 8x, 16x, 32x, and 64x the original principal.
- 03
Can I use this for different starting amounts?
Yes. When using get_growth_milestones, you can provide a startingPrincipal value to see the projected monetary value at each doubling event.
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