Summary
Connects Claude to Base mainnet DEXes to scan for flash loan arbitrage opportunities. Exposes seven read-only tools that compare token prices across Uniswap V2, V3, and Aerodrome pools, estimate flash loan profitability after Aave fees and gas costs, and analyze mempool transactions for sandwich attack patterns. Queries on-chain reserves and uses DEX quoters for accurate pricing without requiring private keys. Reach for this when you need an AI agent to monitor cross-DEX price discrepancies on Base or analyze trading risks before executing swaps. Uses DexScreener to scan top traded tokens and checks pending transactions for front-running detection.
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base-flash-arb-mcp
MCP server for detecting flash loan arbitrage opportunities across DEXes on Base mainnet.
Tools
| Tool | Description |
|---|---|
detect_arb_opportunity | Compare token prices across Uniswap V2, V3, and Aerodrome. Find profitable arb routes. |
get_pool_reserves | Get reserves/liquidity for a token across all known DEX pools on Base. |
estimate_flash_profit | Estimate flash loan profit between two pools after gas costs. |
scan_top_tokens | Scan top traded tokens on Base for arb opportunities via DexScreener. |
get_price_across_dexes | Get current price of a token on all available DEXes. |
check_sandwich_risk | Analyze recent trades for sandwich attack patterns (bot activity). |
get_mempool_pending | Check pending transactions for front-run detection. |
Install
npx -y base-flash-arb-mcp
Configuration
Set RPC_URL environment variable to override the default Base RPC (https://mainnet.base.org).
Claude Desktop
{
"mcpServers": {
"base-flash-arb": {
"command": "npx",
"args": ["-y", "base-flash-arb-mcp"],
"env": {
"RPC_URL": "https://mainnet.base.org"
}
}
}
}
DEXes Covered
- Uniswap V2 (Factory:
0x8909Dc15e40173Ff4699343b6eB8132c65e18eC6) - Uniswap V3 (Fee tiers: 0.05%, 0.3%, 1%)
- Aerodrome (Volatile + Stable pools)
How It Works
All tools are read-only -- no private key needed. The server queries on-chain pool reserves, uses DEX quoters for accurate pricing, and compares across exchanges to find price discrepancies that could be exploited via flash loans.
Flash profit estimation accounts for:
- Aave flash loan fee (0.09%)
- Base gas costs (dynamically estimated)
- Slippage warning
Sandwich detection uses heuristic analysis of Swap events to identify same-block multi-transaction patterns from single addresses.
Related MCP Servers
| Package | Tools | What it does |
|---|---|---|
obsd-launchpad-mcp | 14 | Deploy tokens, trade, earn OBSD |
base-security-scanner-mcp | 8 | Scan contracts for vulnerabilities |
base-price-oracle-mcp | 7 | On-chain price feeds from DEX pools |
base-multi-wallet-mcp | 8 | Coordinated multi-wallet trading |
base-gasless-deploy-mcp | 5 | Gasless ERC-20 token deployment |
base-flash-arb-mcp | 7 | Detect arbitrage opportunities |
base-token-sniper-mcp | 5 | Discover & trade new launches |
base-wallet-toolkit-mcp | 7 | Wallet balances, gas, tokens |
base-contract-reader-mcp | 6 | Read any smart contract (free) |
create-mcp-server-cli | - | Scaffold a new MCP server |
License
MIT
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →