Thicket.

MCP · 107+ weekly installs on npm

Calculator APIs for AI agents

Give your AI agent production-quality calculator tools via the Model Context Protocol. BMI, mortgage, compound interest, TDEE, age — all in one package.

$npm install@thicket-team/mcp-calculators
View on npm →Subscribe for updates

6 calculator tools included

Each tool is backed by a live Thicket calculator site with full documentation.

BMI CalculatorBody Mass Index from weight/heightvia CalcFitTDEE CalculatorTotal Daily Energy Expenditurevia CalcFitMortgage CalculatorMonthly payments, total cost, amortizationvia MoneyLensCompound InterestInvestment growth over timevia MoneyLensAge CalculatorExact age in years, months, daysvia AgeCalcPaycheck CalculatorNet pay after taxes and deductionsvia PayScale Pro

Works with any MCP client

Model Context Protocol is an open standard. One package, every compatible AI.

Claude Desktop

// claude_desktop_config.json
{
  "mcpServers": {
    "thicket-calculators": {
      "command": "npx",
      "args": ["-y", "@thicket-team/mcp-calculators"]
    }
  }
}

Add to Claude Desktop in 30 seconds. All calculators appear as native tools.

Claude API

import Anthropic from "@anthropic-ai/sdk"
// Use thicket calculator tools via MCP
const client = new Anthropic()
// Tools auto-discovered from the MCP server

Connect to any Claude API integration via MCP tool use.

Any MCP Client

npx @thicket-team/mcp-calculators
# Starts MCP server on stdio
# Compatible with: Claude, Continue, Zed, etc.

Works with any app that supports the Model Context Protocol.

Backed by live calculator sites

Every MCP tool connects to a production Thicket site. Try the calculators yourself.

CalcFitFitness calculatorsfit.thicket.shMoneyLensFinance calculatorsmoney.thicket.shPayScale ProPaycheck & salarypay.thicket.shAgeCalcAge & date toolsage.thicket.sh

Why developers choose Thicket calculators

  • Production-tested formulas. Every formula is verified against clinical and financial standards. No placeholder math.
  • 30-second setup. One npm install. Paste config into Claude Desktop. Done. No API keys, no auth, no billing.
  • Open standard. Built on the Model Context Protocol — works with Claude, Continue, Zed, and anything MCP-compatible.
  • Growing library. New tools added weekly as Thicket expands its calculator network. Subscribe for updates.