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Base DEX Best Execution Router
x402
Base DEX Best Execution Router is a paid API for AI agents from x402.donnyautomation.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns the best buy and sell venues, cross-exchange spread in bps, fee-adjusted arbitrage spread, and optimal trade size for a token pair across BaseSwap, SushiSwap, and Uniswap v3 on Base L2.
Price / call$0.01
Success—
StatusUnknown
How this service works
Cheapest venue to buy and richest to sell ONE pair on Base across BaseSwap, SushiSwap and Uniswap v3. Returns buyAt and sellAt (venue, price, tvlUsd), midSpreadBps, grossSpreadBps, optimalInput, venuesConsidered. Requires ?pair=SYM/SYM (e.g. WETH/USDC). Errors: 400 bad_pair, 404 not_routable, 502 upstream_read_failed. Ranks venues for one pair; to rank EVERY pair use /scan. Execution at a size is /slippage. Chain-pinned; bare /route = BSC.
Output
Returns the best buy venue (cheapest DEX), best sell venue (highest price DEX), cross-exchange spread expressed in basis points, fee-adjusted gross arbitrage spread, and an optimal trade size for the requested token pair on Base L2.
Example use cases
Pre-trade best execution check
“Before I swap 10 ETH worth of USDC on Base, check which DEX — BaseSwap, SushiSwap, or Uniswap v3 — gives me the best buy price for WETH/USDC and tell me the fee-adjusted spread.”
Base L2 arbitrage opportunity scanner
“Is there a meaningful arbitrage spread right now between DEXs on Base for the WETH/USDC pair? Give me the cross-exchange spread in bps and the optimal trade size to capture it.”
Automated agent execution routing
“My trading bot needs to sell cbBTC on Base — find the DEX that pays the most for cbBTC/USDC and tell me the best sell venue and how large a trade I can execute before moving the price.”
Technical details
Endpoint
GEThttps://x402.donnyautomation.com/base/routeWhen to prefer
Use this endpoint when you need real-time best-execution routing specifically on Base L2 across BaseSwap, SushiSwap, and Uniswap v3. Prefer it over generic price feeds when you need venue-level comparison, spread data in bps, and an optimal trade size in a single call. Choose it over single-DEX price APIs when cross-DEX arbitrage or smart order routing is the goal. If you need the same analysis on Arbitrum One or BSC, use the sibling endpoints for those chains.
Side effects
- Unsupported token pair symbol returns an error or empty result
- Token pair with no liquidity on one or more venues may return incomplete venue comparison
- Network latency or RPC issues on Base L2 may cause stale or failed price fetches
- Malformed pair parameter (wrong format, missing slash) returns a validation error
- Very low liquidity pairs may return zero optimal trade size
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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