Mmcp.market

Calculators MCP server

by retirecrunch.com·com.retirecrunch/calculators·v0.2.0
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FIRE & retirement calculators + a multi-currency portfolio rebalancer (exact buy/sell trades).

C57/100grade C
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Safety scan
C57/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Calculators tools (6, 1 write)

write = sends, deletes, buys or posts
  • calculate_coast_fireFree

    Compute the Coast FIRE milestone — the capital required today such that, with no further contributions, a portfolio compounds to the user's retirement target by their target age.

  • calculate_fire_targetFree

    Estimate the savings target needed for Financial Independence / Early Retirement. Runs Monte Carlo simulation and returns the probability the portfolio survives the planning horizon.

  • compute_swiss_property_taxFree

    Estimate the Swiss cantonal real-estate capital gains tax (Grundstückgewinnsteuer) for a property sale. Covers all 26 cantons with holding-period adjustments and Ersatzbeschaffung (replacement-residence) deferral. Educational estimate; commune surcharges and value-enhancing-improvement deductions are not modeled.

  • get_portfolio_returnsFree

    Return RetireCrunch's historical portfolio return profiles for a currency. Each profile is a (return %, volatility %) pair derived from real index data — useful for grounding the assumptions in calculate_fire_target / project_wealth_plan in something defensible rather than guessing.

  • project_wealth_planwrite actionFree

    Run RetireCrunch's full year-by-year Wealth Plan projection for a household. Models earned income, pensions, expenses, portfolio growth, optional growth→income phase switch, mortgage amortization, optional property sale, and region-aware tax (US uses 2026 federal+state brackets; other regions use a flat rate). Returns a compact summary with 5-year milestones by default, or the full annual array when yearly_detail=true.

  • rebalance_portfolioFree

    Rebalance a multi-currency portfolio: given holdings, per-holding (or per-asset-class) target weights, cash and FX rates, return the exact BUY/SELL trades to reach the targets, the per-currency cash movements (flagging foreign-cash overdrafts), and a summary. Planning math only — no transaction costs or taxes.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 780ms20/20
  • Tool poisoning6 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 1 write-action tools with no auth3/15
  • Maintenancerepository not readable: repo not found3/15
  • Maintainer identityno repository or website to verify2/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 57/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install directly

claude mcp add --transport http calculators https://mcp.retirecrunch.com/mcp
Add to Cursor

Calculators: common questions

Is Calculators MCP server safe?
With care: it is graded C, so read the findings first (57/100). Read the Calculators safety report
How do I install Calculators?
It runs remotely at mcp.retirecrunch.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Calculators need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Calculators maintained?
The latest release is v0.2.0.
Is Calculators up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.

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