PNL Toolkit
Eight free investment and trading calculators with PNG charts and editable result links.
Connect it
Settings → Connectors → Add custom connector
URL: https://pnltoolkit.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://pnltoolkit.com/mcp{
"mcpServers": {
"calculators": {
"url": "https://pnltoolkit.com/mcp"
}
}
}claude mcp add --transport http calculators https://pnltoolkit.com/mcp{
"servers": {
"calculators": {
"type": "http",
"url": "https://pnltoolkit.com/mcp"
}
}
}8 tools, verified live
historical_returnread-onlyHistorical investment return using installed monthly closes, not live quotes. Asset ticker, start/end months YYYY-MM, amount in USD (unit=cash) or historical shares/coins (unit=coins), buying fee in percent, optional benchmark and total/price return basis. Omitted dates use calculator defaults clamped to asset/benchmark coverage. Returns data coverage/source metadata and the free calc-return PNG.
dca_backtestread-onlyDollar-cost-averaging backtest using installed monthly closes, not live quotes. Asset ticker, start/end months YYYY-MM, initial deposit in USD, monthly in USD per purchase, frequency in months (1, 3 or 12), buying fee in percent, optional benchmark and total/price return basis. Initial deposit and first recurring purchase occur at the selected start month-end. Omitted dates use calculator defaults
compound_interestread-onlyCompound interest in USD: initial dollars, monthly dollars, annual return/fees/inflation in percent, and whole years. Creates a free calc-compound PNG. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.
position_sizeread-onlyPosition sizing for linear USD shares/coins: prices in USD, account risk in percent, fees/slippage in basis points, quantity increment in units. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.
trade_expectancyread-onlyTrade expectancy and fractional Kelly: balance in USD, win rate/buffer/cap in percent, wins/losses/cost in R, fraction 0â1. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.
drawdown_recoveryread-onlyDrawdown recovery: balances/deposits in USD, drawdown and monthly return in percent, target horizon in whole months. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.
spread_and_feesread-onlyRound-trip spread economics: one-side notional in USD; full spread, fee per fill and adverse cost in basis points (1 bp = 0.01%). Negative fees are rebates. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.
inventory_quotesread-onlyInventory quotes: mid and tick in USD, inventory weights in percent, spread/skew/cap in basis points. Skew is bps per 10 percentage points of inventory deviation. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.
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