rule_of_72 — BoringToolsKit MCP Tool
rule_of_72
(rule of 72) is one of 36 tools on the
BoringToolsKit
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call rule_of_72 from your client
- Claude Code BoringToolsKit rule_of_72 run in your project directory
- Claude Desktop BoringToolsKit rule_of_72 ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor BoringToolsKit rule_of_72 ~/.cursor/mcp.json
- VS Code BoringToolsKit rule_of_72 .vscode/mcp.json
- Zed BoringToolsKit rule_of_72 ~/.config/zed/settings.json
- Windsurf BoringToolsKit rule_of_72 ~/.codeium/windsurf/mcp_config.json
- Cline BoringToolsKit rule_of_72 ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI BoringToolsKit rule_of_72 ~/.gemini/settings.json
- Grok BoringToolsKit rule_of_72 .mcp.json (in your project root)
- ChatGPT BoringToolsKit rule_of_72 Settings → Connectors → Advanced → Developer mode
- Claude.ai BoringToolsKit rule_of_72 Settings → Connectors → Add custom connector
- LangChain BoringToolsKit rule_of_72 pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http boringtoolskit https://boringtoolskit.com/mcpOther tools on this server
- tip_bill_split
- discount_percent_off
- bmi
- bmr_tdee
- mortgage_payment
- auto_loan
- compound_interest
- savings_growth
- simple_interest
- calorie
- percentage
- square_footage
- apy
- win_loss_percentage
- slope
- cagr
- remainder
- combinations
- margin_of_error
- va_mortgage
- gross_rent_multiplier
- emergency_fund
- dividend_reinvestment
- budget_50_30_20
- growing_degree_day
- insulation
- roofing
- maintenance_calories
- protein_molecular_weight
- key_transposition
- audio_time_stretch
- youtube_revenue
- ceiling_tile
- boat_loan
- pressure
This list was read from the server itself, by connecting to it and calling tools/list on 14 October 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.