MCP server

Retirecrunch Calculators Official

com.retirecrunch/calculators

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

FIRE & retirement calculators + a multi-currency portfolio rebalancer (exact buy/sell trades).

Source

At a glance

Type

MCP server

Publisher

retirecrunch.com (verified by the MCP Registry)

Status

Working at last check

Tools

8

Token cost

About 3,966 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.calculators]
url = "https://mcp.retirecrunch.com/mcp"

Gemini CLI

{"mcpServers":{"calculators":{"httpUrl":"https://mcp.retirecrunch.com/mcp"}}}

Cursor

{"mcpServers":{"calculators":{"url":"https://mcp.retirecrunch.com/mcp"}}}

VS Code

{"servers":{"calculators":{"type":"http","url":"https://mcp.retirecrunch.com/mcp"}}}

Antigravity

agy mcp add calculators https://mcp.retirecrunch.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"calculators","server_url":"https://mcp.retirecrunch.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"calculators","server_url":"https://mcp.retirecrunch.com/mcp"}

Tools

• calculate_coast_fire ~324 tokens
  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_target ~345 tokens
  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_tax ~324 tokens
  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 ar
• get_portfolio_returns ~183 tokens
  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.
• get_rebalance_plan ~208 tokens
  Fetch the rebalancing trades the user decided on in the RetireCrunch Rebalancer, from the plan code they copied ("Send plan to my AI"). Codes work once, for 15 minutes. Returns the trades with IBKR contract ids where known. To act on them, create one IBKR order instruction per trade (create_order_in
• load_portfolio ~807 tokens
  Open the user's Interactive Brokers portfolio in the RetireCrunch Portfolio Rebalancer. First call the IBKR connector's get_account_positions, get_account_balances and get_account_summary, then pass their results here UNCHANGED (do not re-type or round numbers). Returns a private link that works onc
• project_wealth_plan ~1065 tokens
  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
• rebalance_portfolio ~710 tokens
  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 cost

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