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mQuickCalc Finance MCP Server

mQuickCalc Finance MCP Server

by eyetoolkit
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mQuickCalc Finance MCP Server

Smithery npm version License: MIT

Calculate Etsy, eBay, PayPal, Stripe, and Shopify fees — directly inside your AI agent.

Stop switching between browser tabs. mQuickCalc Finance MCP gives your AI agent the ability to calculate e-commerce fees, compare platform costs, and run profit margin analysis — without leaving the conversation.

14 production-ready tools: Etsy, eBay, PayPal, Stripe, Shopify fees · discount/markup/margin · break-even · compound interest · loan · mortgage · sales tax · platform comparison

Perfect for: e-commerce sellers, freelancers, AI-powered financial analysis, pricing automation.

Tools

Tool

Description

etsy_fee_calculator

Etsy fee breakdown: transaction, payment processing, regulatory, listing, off-site ads

ebay_fee_calculator

eBay fee breakdown across US/UK/DE/CA/AU markets, supports tiered rate

paypal_fee_calculator

PayPal transaction fee, direct transfer fee, currency conversion

stripe_fee_calculator

Stripe fee, net received, effective rate; supports target-net calculation

shopify_fee_calculator

Shopify Payments, Stripe, PayPal, manual payment fees

platform_fee_comparison

Compare Etsy, eBay, Stripe, PayPal, Shopify fees side-by-side

profit_margin_calculator

Gross/net profit, margin, markup from cost and selling price

discount_calculator

Original price, discount %, final price, savings

markup_calculator

Cost → markup % → selling price

margin_calculator

Selling price → margin % → gross profit

break_even_calculator

Break-even units and revenue from fixed/variable costs

compound_interest_calculator

Future value, total interest, annual equivalent

loan_calculator

Monthly payment, total interest, amortization schedule

mortgage_calculator

Monthly payment, total interest, affordability estimate

sales_tax_calculator

Add or remove sales tax from any amount

Related MCP server: Cralo

Installation

Prerequisites

  • Node.js 18+ (Node 20 recommended)

  • npm 9+

Quick install

npm install -g @eyetoolkit/mquickcalc-finance-mcp

Build from source

npm install
npm run build

Test locally

node dist/index.js

Claude Desktop Integration

Add to your Claude Desktop config:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "mquickcalc-finance": {
      "command": "node",
      "args": ["/ABSOLUTE/PATH/TO/mcp-finance/dist/index.js"]
    }
  }
}

Then restart Claude Desktop.

Usage Examples

Calculate Etsy fees for a $50 item with $5 shipping:
→ etsy_fee_calculator({ price: 50, shipping: 5 })

Compare platform fees for a $75 item:
→ platform_fee_comparison({ price: 75, shipping: 0 })

Calculate how much to charge to receive $100 net after Stripe fees:
→ stripe_fee_calculator({ targetNet: 100 })

What's the monthly payment on a $300,000 mortgage at 6.5% over 30 years?
→ mortgage_calculator({ principal: 300000, annualRate: 6.5, years: 30 })

Pricing

Free tier: All 14 tools, no API key required.

Pro tier (coming soon): Unlimited calls, history storage, batch analysis.

License

MIT

Available Tools

14 tools
break_even_calculatorC

Calculate break-even point in units. Input: fixedCosts, pricePerUnit, variableCostPerUnit, targetProfit (optional).

Inputs: fixedCosts (required), pricePerUnit (required), targetProfit, variableCostPerUnit.

compound_interest_calculatorA

Compound interest with optional monthly contributions. Input: principal, annualRate (%), years, monthlyContribution, compoundFreq (default 12).

Inputs: years (required), principal (required), annualRate (required), compoundFreq, +1 more.

discount_calculatorB

Calculate final price and savings from discount %. Input: originalPrice, discountPercent.

Inputs: originalPrice (required), discountPercent (required).

ebay_fee_calculatorB

Calculate eBay fees for US/UK/DE/CA/AU markets. Final value fee + payment processing $0.35.

Inputs: itemPrice (required), market, shipping.

etsy_fee_calculatorA

Calculate Etsy fees: transaction (6.5%) + payment processing (3.25%+$0.25) + listing ($0.20). EU adds 2% regulatory fee.

Inputs: itemPrice (required), country, shippingFee.

loan_calculatorC

Fixed-rate loan monthly payment. Input: principal, annualRate (%), years.

Inputs: years (required), principal (required), annualRate (required).

markup_margin_calculatorA

Calculate selling price and margin from cost + markup %. Input: cost, markupPercent.

Inputs: cost (required), markupPercent (required).

mortgage_calculatorA

Monthly mortgage payment. Input: homePrice, downPayment (%) default 20, years default 30, annualRate (%) default 6.5.

Inputs: homePrice (required), years, annualRate, downPayment.

paypal_fee_calculatorA

PayPal fee: domestic 2.99%+$0.30, micropayment 4.99%+$0.05.

Inputs: amount (required), isMicropayment.

platform_fee_comparisonA

Compare net revenue on Etsy, eBay, and PayPal for a given sale. Input: itemPrice, shippingFee (optional).

Inputs: itemPrice (required), shippingFee.

profit_margin_calculatorB

Calculate gross profit and profit margin % from revenue and cost.

Inputs: cost (required), revenue (required).

sales_tax_calculatorB

Add sales tax to a price. Input: price, taxRate (%) default 8.

Inputs: price (required), taxRate.

shopify_fee_calculatorC

Shopify monthly fee: Basic $29 / Shopify $79 / Advanced $299 + per-transaction fees (3.25%/2.95%/2.65%).

Inputs: plan (required), monthlySales.

stripe_fee_calculatorC

Stripe domestic 2.9%+$0.30, international 3.9%+$0.30.

Inputs: amount (required), type.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    Deploy Server
    One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

    TDQS

    B3.4/5.0

    Scored across 14 tools

    Disambiguation4/5

    Most tools have clearly distinct purposes (e.g., PayPal vs. eBay fees), but fee calculators for specific platforms are similar in structure and could be confused when selecting a generic fee tool. The platform_fee_comparison tool overlaps with individual calculators, but its aggregate purpose helps disambiguation.

    Naming Consistency4/5

    Most tools follow a clear pattern of 'provider_fee_calculator' or 'calculator' suffix, with consistent snake_case naming. A few like markup_margin_calculator and profit_margin_calculator are slightly redundant in wording, but the overall naming is predictable.

    Tool Count5/5

    With 14 tools, the server covers a reasonable range of financial calculations for a niche purpose. Each tool targets a distinct calculation need, and the count is well within the ideal 3-15 range.

    Completeness4/5

    The server covers common fee, pricing, and financial calculations, but lacks some expected calculators like currency conversion or simple percentage change. A tool for comparing rates or analyzing scenarios would round out the set, but the core use cases are covered.

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