# DeltaCalc v0.3.0 - Table of Contents > Pure-Decimal calculation engine for leveraged crypto trading: position sizing, effective leverage, liquidation, DCA ladders, safety scoring, and spot hedging. ## Pages - [DeltaCalc](readme.md) - [Changelog](changelog.md) - [LICENSE](license.md) ## Modules - [DeltaCalc](DeltaCalc.md): Pure-`Decimal` calculation engine for leveraged crypto trading. - [DeltaCalc.AccountMetrics](DeltaCalc.AccountMetrics.md): Per-account liquidation, leverage, and margin-usage metrics. - [DeltaCalc.Allocation](DeltaCalc.Allocation.md): Subaccount allocation-envelope calculations. - [DeltaCalc.Carry](DeltaCalc.Carry.md): Basis and funding carry math for spot/perp hedge profitability decisions. - [DeltaCalc.Concentration](DeltaCalc.Concentration.md): Concentration-risk primitives for portfolio asset weights. - [DeltaCalc.DCAPlanner](DeltaCalc.DCAPlanner.md): DCA ladder planning and strategy management. - [DeltaCalc.Decimal](DeltaCalc.Decimal.md): Exact input coercion for DeltaCalc's Decimal calculations. - [DeltaCalc.DeltaNeutral](DeltaCalc.DeltaNeutral.md): Base-numeraire exposure, settlement coverage, and delta-neutral rebalance math. - [DeltaCalc.Fees](DeltaCalc.Fees.md): Pure fee and slippage math for effective fill prices, roundtrip costs, and funding-adjusted breakeven levels. - [DeltaCalc.Funding](DeltaCalc.Funding.md): Pure funding-rate math: APR annualisation, cross-venue comparison, arbitrage detection, and trend analysis. - [DeltaCalc.FundingProjection](DeltaCalc.FundingProjection.md): Pure funding-income projections for margin payback timelines. - [DeltaCalc.Hedging](DeltaCalc.Hedging.md): Pure spot-hedging formulas for portfolio balance and coverage calculations. - [DeltaCalc.Leverage](DeltaCalc.Leverage.md): Effective-leverage and position aggregation calculations. - [DeltaCalc.Liquidation](DeltaCalc.Liquidation.md): Simplified analytical liquidation-price calculations for long and short positions. - [DeltaCalc.Manifest](DeltaCalc.Manifest.md): Aggregates the Descripex-annotated API surface for agent discovery and MCP tooling. - [DeltaCalc.MarginBridge](DeltaCalc.MarginBridge.md): Pure margin-bridge formulas for perp-funded option financing. - [DeltaCalc.OptionLadder](DeltaCalc.OptionLadder.md): Pure rolling option ladder calculations for perp-funded option strategies. - [DeltaCalc.OptionsRisk](DeltaCalc.OptionsRisk.md): Long-option risk framing and margin-bridge funding stress for option buyers. - [DeltaCalc.Pnl](DeltaCalc.Pnl.md): Position PnL, return-on-equity, and fee/funding-adjusted breakeven math. - [DeltaCalc.PortfolioMargin](DeltaCalc.PortfolioMargin.md): Portfolio-margin calculations over a caller-supplied position list. - [DeltaCalc.PositionCalculator](DeltaCalc.PositionCalculator.md): Core position sizing calculations for risk management and leverage planning. - [DeltaCalc.Presets](DeltaCalc.Presets.md): Preset configurations for risk modes, black swan thresholds, and DCA ladder strategies. - [DeltaCalc.Quantization](DeltaCalc.Quantization.md): Legacy output-boundary quantization retained for retired-dashboard compatibility. - [DeltaCalc.Safety](DeltaCalc.Safety.md): Position safety scoring and before/after DCA safety comparisons. - [DeltaCalc.StressScenario](DeltaCalc.StressScenario.md): Price-shock scenario engine for a portfolio-margin position book.