Files
mev-beta/scripts/deploy-flashloan-fork.sh
Krypto Kajun c7142ef671 fix(critical): fix empty token graph + aggressive settings for 24h execution
CRITICAL BUG FIX:
- MultiHopScanner.updateTokenGraph() was EMPTY - adding no pools!
- Result: Token graph had 0 pools, found 0 arbitrage paths
- All opportunities showed estimatedProfitETH: 0.000000

FIX APPLIED:
- Populated token graph with 8 high-liquidity Arbitrum pools:
  * WETH/USDC (0.05% and 0.3% fees)
  * USDC/USDC.e (0.01% - common arbitrage)
  * ARB/USDC, WETH/ARB, WETH/USDT
  * WBTC/WETH, LINK/WETH
- These are REAL verified pool addresses with high volume

AGGRESSIVE THRESHOLD CHANGES:
- Min profit: 0.0001 ETH → 0.00001 ETH (10x lower, ~$0.02)
- Min ROI: 0.05% → 0.01% (5x lower)
- Gas multiplier: 5x → 1.5x (3.3x lower safety margin)
- Max slippage: 3% → 5% (67% higher tolerance)
- Max paths: 100 → 200 (more thorough scanning)
- Cache expiry: 2min → 30sec (fresher opportunities)

EXPECTED RESULTS (24h):
- 20-50 opportunities with profit > $0.02 (was 0)
- 5-15 execution attempts (was 0)
- 1-2 successful executions (was 0)
- $0.02-$0.20 net profit (was $0)

WARNING: Aggressive settings may result in some losses
Monitor closely for first 6 hours and adjust if needed

Target: First profitable execution within 24 hours

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-29 04:18:27 -05:00

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#!/bin/bash
# Deploy FlashLoanReceiverSecure to Arbitrum Fork
# This script deploys and tests the flash loan contract on a local fork
set -e
echo "═══════════════════════════════════════════════════════════════════"
echo " FlashLoanReceiverSecure - Fork Deployment"
echo "═══════════════════════════════════════════════════════════════════"
echo ""
# Colors
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
RED='\033[0;31m'
NC='\033[0m' # No Color
# Balancer Vault address on Arbitrum
BALANCER_VAULT="0xBA12222222228d8Ba445958a75a0704d566BF2C8"
# Default deployer (Anvil account #0)
DEPLOYER="0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
echo -e "${YELLOW}📋 Configuration:${NC}"
echo " Balancer Vault: $BALANCER_VAULT"
echo " Deployer: $DEPLOYER"
echo ""
# Check if Arbitrum RPC endpoint is set
if [ -z "$ARBITRUM_RPC_URL" ]; then
echo -e "${RED}❌ Error: ARBITRUM_RPC_URL not set${NC}"
echo " Please set: export ARBITRUM_RPC_URL='https://arb1.arbitrum.io/rpc'"
exit 1
fi
echo -e "${YELLOW}🔄 Starting Arbitrum fork...${NC}"
echo " RPC: $ARBITRUM_RPC_URL"
echo ""
# Start anvil fork in background
ANVIL_LOG="/tmp/anvil-fork.log"
anvil --fork-url "$ARBITRUM_RPC_URL" --port 8545 --chain-id 42161 > "$ANVIL_LOG" 2>&1 &
ANVIL_PID=$!
# Wait for anvil to start
sleep 3
# Check if anvil started successfully
if ! kill -0 $ANVIL_PID 2>/dev/null; then
echo -e "${RED}❌ Failed to start Anvil fork${NC}"
cat "$ANVIL_LOG"
exit 1
fi
echo -e "${GREEN}✅ Anvil fork started (PID: $ANVIL_PID)${NC}"
echo " Listening on: http://localhost:8545"
echo " Chain ID: 42161 (Arbitrum)"
echo ""
# Cleanup function
cleanup() {
echo ""
echo -e "${YELLOW}🧹 Cleaning up...${NC}"
if kill -0 $ANVIL_PID 2>/dev/null; then
kill $ANVIL_PID
echo -e "${GREEN}✅ Anvil fork stopped${NC}"
fi
}
trap cleanup EXIT
echo -e "${YELLOW}🚀 Deploying FlashLoanReceiverSecure...${NC}"
echo ""
# Deploy contract using forge script
forge script scripts/DeployFlashLoanSecure.s.sol:DeployFlashLoanSecure \
--rpc-url http://localhost:8545 \
--private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 \
--broadcast \
-vvv
echo ""
echo -e "${GREEN}✅ Deployment complete!${NC}"
echo ""
echo -e "${YELLOW}📝 Next steps:${NC}"
echo " 1. Note the deployed contract address above"
echo " 2. Test flash loan execution"
echo " 3. Verify slippage protection works"
echo " 4. Test with real arbitrage paths"
echo ""
echo -e "${YELLOW}💡 Tip:${NC} Fork will keep running. Press Ctrl+C to stop."
echo ""
echo "═══════════════════════════════════════════════════════════════════"
# Keep script running
wait $ANVIL_PID