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BoringToolsKit MCP

v1.0.0

io.github.roadtogideon222-byte/boringtoolskit

36 free private calculator tools for Claude. No accounts, no data leaves your session.

transport:streamable-http tools:36

Target client

run in your project directory

claude mcp add --transport http boringtoolskit https://boringtoolskit.com/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

tip_bill_split

tip bill split

discount_percent_off

discount percent off

bmi

bmi

bmr_tdee

bmr tdee

mortgage_payment

mortgage payment

auto_loan

auto loan

compound_interest

compound interest

savings_growth

savings growth

simple_interest

simple interest

calorie

calorie

percentage

percentage

square_footage

square footage

apy

apy

win_loss_percentage

win loss percentage

slope

slope

rule_of_72

rule of 72

cagr

cagr

remainder

remainder

combinations

combinations

margin_of_error

margin of error

va_mortgage

va mortgage

gross_rent_multiplier

gross rent multiplier

emergency_fund

emergency fund

dividend_reinvestment

dividend reinvestment

budget_50_30_20

budget 50 30 20

growing_degree_day

growing degree day

insulation

insulation

roofing

roofing

maintenance_calories

maintenance calories

protein_molecular_weight

protein molecular weight

key_transposition

key transposition

audio_time_stretch

audio time stretch

youtube_revenue

youtube revenue

ceiling_tile

ceiling tile

boat_loan

boat loan

pressure

pressure

All 36 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.