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smithery/jeremylongshore

simulating-flash-loans

Simulate flash loan strategies with profitability calculations and risk assessment across Aave, dYdX, and Balancer. Use when simulating flash loans, analyzing arbitrage profitability, evaluating liquidation opportunities, or comparing flash loan providers. Trigger with phrases like "simulate flash loan", "flash loan arbitrage", "liquidation profit", "compare Aave dYdX", "flash loan strategy", or "DeFi arbitrage simulation". '

Installation

$ npx skills add smithery/jeremylongshore --skill simulating-flash-loans
View on skills.sh ↗ Website ↗

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More details

Agent compatibility

Declared targets from SKILL.md / docs. Unmarked agents are not listed — the skill may still install via the CLI.

Claude Code Declared
Cursor Not declared
Codex Not declared
GitHub Copilot Not declared
Windsurf Not declared
Gemini CLI Not declared
Cline Not declared
OpenCode Not declared

Skill metadata

Parsed from SKILL.md frontmatter.

Version1.30.0
LicenseMIT
CompatibilityDesigned for Claude Code
Allowed toolsRead, Write, Edit, Grep, Glob, Bash(crypto:flashloan-*)
Declared agents claude-code

Package contents

Files included with this skill beyond the listing page.

  • skill md SKILL.md 4,576 B
  • docs SUMMARY.md 459 B

History

  1. First recorded snapshot · 0 installs

SKILL.md

Simulating Flash Loans

Contents

[Overview](#overview) | [Prerequisites](#prerequisites) | [Instructions](#instructions) | [Output](#output) | [Error Handling](#error-handling) | [Examples](#examples) | [Resources](#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:

``bash python ${CLAUDESKILLDIR}/scripts/flash_simulator.py arbitrage ETH USDC 100 \ --dex-buy uniswap --dex-sell sushiswap ``

  1. Compare flash loan providers to find the cheapest for your strategy:

``bash python ${CLAUDESKILLDIR}/scripts/flash_simulator.py arbitrage ETH USDC 100 --compare-providers ``

  1. Analyze liquidation profitability on lending protocols:

``bash python ${CLAUDESKILLDIR}/scripts/flash_simulator.py liquidation \ --protocol aave --health-factor 0.95 ``

  1. Simulate triangular arbitrage with multi-hop circular paths:

``bash python ${CLAUDESKILLDIR}/scripts/flash_simulator.py triangular \ ETH USDC WBTC ETH --amount 50 ``

  1. Add risk assessment (MEV competition, execution, protocol, liquidity) to any simulation:

``bash python ${CLAUDESKILLDIR}/scripts/flash_simulator.py arbitrage ETH USDC 100 --risk-analysis ``

  1. Run full analysis combining all features:

``bash python ${CLAUDESKILLDIR}/scripts/flash_simulator.py arbitrage ETH USDC 100 \ --full --output json > simulation.json ``

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.

Examples

Basic arbitrage simulation:

python ${CLAUDE_SKILL_DIR}/scripts/flash_simulator.py arbitrage ETH USDC 100 \
  --dex-buy uniswap --dex-sell sushiswap

Find cheapest provider:

python ${CLAUDE_SKILL_DIR}/scripts/flash_simulator.py arbitrage ETH USDC 100 --compare-providers

Liquidation opportunity scan:

python ${CLAUDE_SKILL_DIR}/scripts/flash_simulator.py liquidation --protocol aave --health-factor 0.95

See ${CLAUDESKILLDIR}/references/examples.md for multi-provider comparison and backtesting examples.

Resources

  • ${CLAUDESKILLDIR}/references/implementation.md - Provider comparison, strategy details, risk scoring, output modes
  • Aave V3 Flash Loans
  • dYdX Flash Loans
  • Balancer Flash Loans
  • Flashbots Protect