Dan's Sandbox
A place where I play and mess and share new ideas.
Projects
DeFi Knowledge Graph
Explore the Morpho protocol as an interactive 3D knowledge graph — vaults, markets, tokens, curators and their relationships.
Pool Inspector
Monitor indexer health and inspect pool metrics — TVL, liquidity, share price — across all indexed protocols.
Index Fund Backtester
Backtest "Top X by TVL" DeFi yield index strategies with 4 years of stablecoin pool data.
Snake
Classic Snake game with canvas rendering, arrow/WASD controls, and increasing difficulty.
Safe Module Upgrade
Upgrade Brava Safe modules to the latest configuration across Mainnet, Base, and Arbitrum.
ZK Custodian PoC
Zero-knowledge ownership of distributed smart contracts with stealth addresses and custodian/manager dual authorization.
Bundle Broadcaster
Sign a pre-built bundle on Ethereum and broadcast on the target chain — optionally with a different wallet.
Strategy Allocations
Optimize and backtest yield strategies with dynamic allocation tools.
Cover Cost Analysis
Analyze how cover costs impact APY across different term lengths and tiers.
Cover Cost 3D Visualization
View cover costs in a 3D visualization with adjustable parameters.
Investment Interface
Manage investment allocations and strategies with a drag-and-drop interface.
Tenderly Testnet Helper
Fund accounts and manage tokens on Tenderly testnets with a simple interface.
APY Volatility
DEPRECATED: Functionality moved to Strategy Allocations. This page is kept for reference only.
Changelog
Index Fund Backtester - v1.0.0
- Initial release of Index Fund Backtester
- Backtest "Top X by TVL" stablecoin yield strategies
- 3,337 stablecoin pools across all major EVM chains
- 1.2M+ daily data points spanning 4 years (2022-2026)
- Interactive cumulative performance and APY charts
- Day inspector to view pools in the index on any given day
- Direct links to DeFiLlama for each pool
- Chain filtering and weighting options (equal vs TVL-weighted)
Snake - v1.0.0
- Replaced Noughts & Crosses with classic Snake game implementation
- Canvas-based rendering with 20x20 grid for smooth gameplay
- Arrow keys and WASD movement controls for accessibility
- Score tracking with speed increase as difficulty progression
- Start/Pause/Reset controls for game management
- Collision detection for walls and self-collision game over
- Dynamic page title updates and responsive design
Strategy Allocations - v1.0.0
- Released full version of Strategy Allocations with comprehensive backtesting
- Added APY volatility transformations (formerly in APY Volatility page)
- Implemented backtesting algorithm with gas cost optimization
- Added portfolio visualization with detailed performance charts
- Added rebalancing analysis based on APY improvements vs gas costs
- Fixed performance issues with form input handling