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Base DEX Cross-Arbitrage Scanner
x402
Base DEX Cross-Arbitrage Scanner is a paid API for AI agents from x402.donnyautomation.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Scans all liquid pairs across BaseSwap, SushiSwap, and Uniswap v3 on Base L2, returning ranked cross-venue arbitrage spreads with buy/sell venues, spread in bps, optimal trade size, and gross USD profit.
Price / call$0.01
Success—
StatusUnknown
How this service works
Ranked cross-DEX arbitrage spreads across every liquid pair on Base (BaseSwap, SushiSwap and Uniswap v3). Returns opportunities[] with pair, grossSpreadBps, buyAt, sellAt, optimalTradeSizeUsd, capturable. GROSS, before gas and MEV. Optional ?minSpreadBps=20 (default 10), minVenueTvlUsd, limit. Send one param: a bare call skips the free tier. Errors: 400 bad_min_spread. Scans EVERY pair; for one known pair use /route. Chain-pinned; bare /scan = BSC.
Output
A ranked list of cross-venue arbitrage opportunities on Base L2, each entry including the token pair, the DEX to buy on, the DEX to sell on, the gross spread in basis points, the optimal trade size in USD, and the gross USD profit at that size. Venues below the liquidity floor (default $1000 TVL) are excluded. Results are gross figures before gas and MEV costs.
Example use cases
Arbitrage bot opportunity feed
“Pull the current cross-DEX arbitrage scan on Base with a minimum spread of 20 bps and only pools with at least $5000 TVL — I need the top 10 opportunities ranked by gross USD profit for my arb bot to evaluate.”
Real-time spread monitoring
“Check right now whether there are any arbitrage spreads above 30 bps across BaseSwap, SushiSwap, and Uniswap v3 on Base — I want to know the pair, where to buy, where to sell, and how big the trade should be.”
Pre-trade venue comparison for large swap
“Before I execute a large WETH buy on Base, scan for cross-DEX spread opportunities above 10 bps so I can see if there's a meaningful price difference between venues worth capturing.”
Technical details
Endpoint
GEThttps://x402.donnyautomation.com/base/scanWhen to prefer
Choose this endpoint when you need a full cross-DEX sweep of arbitrage opportunities on Base L2 specifically, across BaseSwap, SushiSwap, and Uniswap v3 simultaneously, rather than checking a single pair or a single venue. It is purpose-built for arbitrage bots that need ranked, liquid opportunities filtered by a TVL floor — not for general price lookups or liquidity depth queries on a specific pair.
Side effects
- No opportunities above minSpreadBps threshold — returns empty list
- minVenueTvlUsd set too high — valid pools filtered out, fewer or no results
- RPC or on-chain data latency causes stale prices — spread may not be executable
- Invalid minSpreadBps value (e.g. non-numeric string) — likely 400 error
- Network congestion on Base L2 causes timeout or delayed response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ts": "2026-07-31T00:00:00.000Z",
"chainId": 8453,
"network": "base"
}
}Tags
x402
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