Cross-Chain Bridge Arbitrage Detector

What does Cross-Chain Bridge Arbitrage Scanner do?

The cross-chain bridge arbitrage scanner detects real-time price discrepancies for the same token across Ethereum, Arbitrum, Optimism, Polygon, Base, BSC, and Avalanche. For each token it performs a bridge rate comparison across all 21 chain pairs, subtracts heuristic bridge costs, and classifies each opportunity as excellent, good, marginal, or negative. This is a true multi-chain arbitrage scanner — no API key required, powered by DexScreener and CoinGecko.

Why use Cross-Chain Bridge Arbitrage Scanner?

• Cross-chain arbitrage traders — find actionable cross-chain bridge arbitrage opportunities ranked by net profit after estimated bridge costs before the window closes.
• Market makers and liquidity providers — identify which chains have persistent price dislocations for tokens you LP on, and rebalance inventory accordingly.
• Quantitative researchers — collect systematic bridge rate comparison data across chain pairs to build models of cross-chain price convergence speed.
• Risk managers — monitor price divergence across chains as an early warning signal for bridge congestion, depegs, or liquidity crises.
• DeFi protocol teams — track real-time arbitrage pressure on your token across chains to optimize bridge integrations and liquidity deployment.

How to use Cross-Chain Bridge Arbitrage Scanner

1. Open the actor on Apify and click Try for free.
2. (Optional) Edit tokens to scan your target tokens (default: USDC, USDT, WETH, WBTC, MATIC).
3. (Optional) Edit chains to restrict to a subset of the 7 supported chains.
4. Set minPriceDiffPct to filter out noise (e.g. 0.1 to see only >0.1% dislocations).
5. Enable onlyProfitable to show only net-positive opportunities after bridge costs.
6. Set minLiquidityUsd to skip illiquid pairs (default: $10,000).
7. Click Start — the run completes in under 30 seconds.

Input

Parameter	Type	Default	Description
tokens	string[]	["USDC","USDT","WETH","WBTC","MATIC"]	Tokens to scan for cross-chain bridge arbitrage
chains	string[]	all 7	Chains to include in the scan
minPriceDiffPct	number	0.0	Minimum price difference (%) to include a pair
onlyProfitable	boolean	false	Only show opportunities with positive net profit
minLiquidityUsd	number	10,000	Skip pairs below this liquidity threshold
includeSummary	boolean	true	Include the summary record in the dataset

Output

Three record types: per-pair arbitrage opportunities, per-chain prices, and a run summary.

[
  {
    "record_type": "arb_opportunity",
    "token_symbol": "USDC",
    "base_chain": "polygon",
    "quote_chain": "ethereum",
    "base_price_usd": 0.9981,
    "quote_price_usd": 1.0003,
    "price_diff_pct": 0.22,
    "arb_direction": "base_to_quote",
    "estimated_profit_100k_usd": 220,
    "bridge_cost_estimate_pct": 0.08,
    "net_profit_after_bridge": 140,
    "opportunity_tier": "good",
    "is_profitable": true,
    "risk_level": "low"
  },
  {
    "record_type": "per_chain_price",
    "token_symbol": "WETH",
    "chain": "arbitrum",
    "price_usd": 3421.14,
    "liquidity_usd": 4800000,
    "volume_24h_usd": 22000000,
    "price_vs_median_pct": -0.11
  }
]

Data fields

Arbitrage opportunity records

Field	Description
token_symbol	Token being compared (e.g. USDC, WETH)
base_chain	Chain with the lower price (buy here)
quote_chain	Chain with the higher price (sell here)
base_price_usd	Token price on the base chain
quote_price_usd	Token price on the quote chain
price_diff_pct	Absolute price difference as a percentage
arb_direction	Always base_to_quote (buy cheap, sell expensive)
estimated_profit_100k_usd	Gross estimated profit on a $100K position
bridge_cost_estimate_pct	Estimated bridge cost as % (route-specific heuristic)
net_profit_after_bridge	Net profit on $100K after subtracting bridge cost estimate
opportunity_tier	excellent (>0.5%) / good (>0.2%) / marginal / negative
is_profitable	true if net profit after bridge is positive
risk_level	low (stablecoins) / medium (WETH, WBTC) / high

Per-chain price records

Field	Description
token_symbol	Token symbol
chain	Chain name
price_usd	Best available price (highest liquidity pair)
liquidity_usd	Liquidity of the pair used for pricing
volume_24h_usd	24h trading volume on this chain
price_vs_median_pct	% deviation from the median price across all chains

Summary record

Field	Description
total_arb_pairs_found	Total chain-pair combinations with price data
total_profitable_pairs	Count of net-positive arbitrage opportunities
avg_price_diff_pct	Average price difference across all pairs
best_arb_opportunity	Single best opportunity found in the run
coingecko_reference_prices	Reference USD prices from CoinGecko

Cost estimation

Pay-Per-Event (PPE) — $0.005 per token analyzed + $0.001 actor start fee.

Scenario	Tokens	Approx. cost
Default (5 tokens)	5	~$0.026
Extended (10 tokens)	10	~$0.051
Full token set (20 tokens)	20	~$0.101

Supported chains

ethereum · arbitrum · optimism · polygon · base · bsc · avalanche

FAQ

How accurate are the bridge cost estimates? Bridge costs are heuristic estimates based on typical fee ranges (0.05–0.20%) for the route. Actual costs vary significantly by bridge, gas price, token, and trade size. Always verify exact costs on-chain before executing a multi-chain arbitrage trade.

How fast do arbitrage windows close? For major tokens like USDC and WETH on high-liquidity chains, price discrepancies typically close within seconds to minutes as MEV bots and arbitrageurs act on them. This actor is best used for research, monitoring persistent price dislocations, or identifying structural bridge rate comparison patterns.

Why are only 7 chains supported? The 7 chains cover the vast majority of cross-chain DeFi volume. Chain coverage will expand in future versions. Use the chains input to restrict to a subset for faster runs.

Disclaimer: Arbitrage opportunity data is based on real-time DEX spot prices from DexScreener and CoinGecko at the time of the run. Prices reflect spot liquidity — large trade sizes will experience slippage. Bridge cost estimates are heuristic and may not reflect actual on-chain fees. Cross-chain bridge arbitrage involves significant execution risk. This actor is for informational and research purposes only and does not constitute financial advice. Always verify opportunities on-chain before executing trades.

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Related actors

• Bridge Volume Tracker — Cross-chain bridge flow volume to identify which bridges are carrying arb execution capital
• DEX Volume Tracker — Per-chain DEX volumes to assess liquidity depth for cross-chain arb opportunities
• CEX Spot Arb Scanner — CEX-to-DEX price discrepancies alongside this actor's cross-chain DEX-to-DEX arb view

Feedback

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Keywords: cross-chain arbitrage, bridge arbitrage scanner, USDC price difference chains, WETH cross-chain spread, Arbitrum Optimism Polygon price gap, DeFi arbitrage opportunity, bridge profit calculator, net profit after bridge cost, multi-chain price discrepancy, L2 arbitrage, cross-chain DEX arb, stablecoin peg arbitrage