Agent skill · data analytics · jeremylongshore
simulating-flash-loans
Simulate flash loan strategies with profitability calculations and risk
Why this skill is useful
Adds executable scripts for simulating flash loan strategies with profitability calculations and risk assessments that aren't available in public documentation.
What it needs
Requires httpx, python, rich, web3 installed locally. About 2k tokens when loaded. Last updated 2026-08-07. 2,604 stars on the source repository.
What this skill does
Simulating Flash Loans Contents Overview Prerequisites Instructions Output Error Handling Examples Resources Overview Simulate flash loan strategies across Aave V3, dYdX, and Balancer with profitability calculations, gas cost estimation, and risk assessment. Evaluate flash loan opportunities without executing real transactions. Prerequisites 1. Install Python 3.9+ with web3, httpx, and rich packages 2. Configure RPC endpoint access (free public RPCs via https://chainlist.org work fine) 3. Optionally add Etherscan API key for better gas estimates 4. Set RPC in ${CLAUDESKILLDIR}/config/settings.yaml or use ETHRPCURL env var Instructions 1. Simulate a two-DEX arbitrage with automatic fee and gas calculation: 2. Compare flash loan providers to find the cheapest for your strategy: 3. Analyze liquidation profitability on lending protocols: 4. Simulate triangular arbitrage with multi-hop circular paths: 5. Add risk assessment (MEV competition, execution, protocol, liquidity) to any simulation: 6. Run full analysis combining all features: Output Quick Mode: Net profit/loss, provider recommendation, Go/No-Go verdict Breakdown Mode: Step-by-step transaction flow with individual cost components Comparison Mode: All providers ranked by net profit with fee differences Risk Analysis: Competition, execution, protocol, and liquidity scores (0-100) with viability grade (A-F) See ${CLAUDESKILLDIR}/references/implementation.md for detailed output examples and risk scoring methodology. Error Handling Error Cause Solution ------- ------- ---------- RPC Rate Limit Too many requests Switch to backup endpoint or wait Stale Prices Data older than 30s Auto-refreshes with warning No Profitable Route All routes lose after costs Try different pairs or amounts Insufficient Liquidity Trade exceeds pool depth Reduce amount or split across pools See ${CLAUDESKILLDIR}/references/errors.md for comprehensive error handling. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills jeremylongshore/simulating-flash-loans