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io.github.VladimirWrites/nestegg-calculators

io.github.VladimirWrites/nestegg-calculators in the official MCP registry. Endpoint https://nestegg.money/mcp. Source: github.com/VladimirWrites/nestegg.money.

The registry describes it as: 90+ pure finance calculators: loans, investing, bonds, options, tax. Stateless, stores nothing.

Connect it

The endpoint answers MCP over HTTP; that is how we read it. Add it to your client:

claude mcp add --transport http nestegg-calculators https://nestegg.money/mcp

{
  "mcpServers": {
    "nestegg-calculators": {
      "url": "https://nestegg.money/mcp"
    }
  }
}

code --add-mcp '{"name":"nestegg-calculators","type":"http","url":"https://nestegg.money/mcp"}'

Some servers ask you to sign in the first time a client connects, or want a key from the people who run them; the server's own docs say which. The free lazaretto-guard plugin reads a server's tools the moment Claude Code adds it and asks you if one of our rules matches.

Tools it advertises

amortization loan-payoff future-value contributions cagr savings-rate fx-convert depreciate straight-line-depreciation fire-number required-contribution inflation-adjust effective-rate npv irr refi-breakeven emergency-fund mortgage-affordability debt-payoff portfolio-longevity present-value required-return yield-to-maturity tax-from-brackets margin-markup compound-interest de-gross-to-net de-net-salary de-abgeltungsteuer de-kindergeld de-midijob de-rentenpunkte vat roi real-return return-stats sharpe-ratio max-drawdown holding-period-return fee-drag dollar-cost-averaging bond-price current-yield bond-duration convexity zero-coupon-price accrued-interest black-scholes option-greeks put-call-parity option-breakeven intrinsic-time-value annuity-pv annuity-fv annuity-payment perpetuity rule-of-72 payback-period discounted-payback mirr and 39 more

Run this server? Show the check in your README

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How this was checked

Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.

To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.

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