TradingCalc is a free set of deterministic calculators exposed as MCP tools, so Claude reports exact numbers instead of estimating them. The same inputs always return the same outputs. The current list of tools is on https://tradingcalc.io and in the MCP tools/list reply.
Options: Black-Scholes price and Greeks (manual, or checked live against a real Deribit BTC or ETH option), payoff and breakeven, straddle and strangle, covered call and protective put, implied volatility. Forex: position size from a risk amount and a stop, pip value, margin level and margin required, swap cost, currency conversion and pair correlation, with live account-currency conversion. Risk and statistics: VaR and CVaR, Sharpe ratio with the Probabilistic and Deflated variants, Kelly growth-security frontier, GARCH, risk parity, Hurst exponent, cointegration and a portfolio tearsheet. Crypto futures: PnL, liquidation price, breakeven, position sizing, funding cost and a full pre-trade check across the supported exchanges, including coin-margined contracts. Also on-chain token and wallet checks and prediction-market odds.
The core calculators are checked against public test vectors on a live page (tradingcalc.io/verify), and every tool response carries an ECDSA P-256 signature so a result can be verified offline. TradingCalc gives calculations only, not trade advice, and does not move funds.
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