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x402.donnyautomation.com – Best Execution Router (OP Mainnet)
x402
x402.donnyautomation.com – Best Execution Router (OP Mainnet) is a paid API for AI agents from x402.donnyautomation.com, paid per call via x402, $0.01/call, status down (last checked 2026-10-21).
Returns the best DEX buy and sell venues, cross-exchange spread in bps, fee-adjusted arbitrage spread, and optimal trade size for a token pair on Optimism (OP Mainnet) across SushiSwap and Uniswap v3 fee tiers.
Price / call$0.01
Success—
StatusDown
How this service works
Pay-per-call (x402/USDC on Base) market-data, geocoding, randomness and hook-risk endpoints. Free demo route included.
Output
Returns the cheapest venue to buy on and the highest-paying venue to sell into for the requested token pair on OP Mainnet, along with the raw cross-exchange spread in basis points, the fee-adjusted gross arbitrage spread, and a recommended optimal trade size for capturing that spread.
Example use cases
Arbitrage bot venue selection on Optimism
“Check the cross-DEX arbitrage spread for WETH/USDC on Optimism right now — I need to know which DEX to buy on, which to sell into, the spread in basis points, and the optimal trade size.”
Best execution routing before a large swap
“I'm about to swap a large amount of OP/USDC on Optimism — which DEX gives me the best buy price, SushiSwap or Uniswap v3, and what's the fee-adjusted spread between them?”
Live DEX price monitoring for trading agent
“Keep an eye on the WBTC/USDC pair on OP Mainnet and alert me whenever the cross-exchange spread between SushiSwap and Uniswap v3 goes above 20 bps.”
Technical details
Endpoint
POSThttps://x402.donnyautomation.com/optimism/route?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time smart order routing or cross-DEX arbitrage intelligence specifically on Optimism (OP Mainnet), comparing SushiSwap and Uniswap v3 fee tiers. Prefer it over generic price feeds when you need a venue recommendation (buy here, sell there) plus a fee-adjusted spread and optimal sizing in a single call. Use sibling endpoints for Arbitrum One, BSC, Polygon, or Avalanche.
Side effects
- Unsupported token pair returns an error or empty result
- Token symbol not found on OP Mainnet causes lookup failure
- Low liquidity on one or both venues may result in unreliable spread estimates
- Rate limiting or payment failure returns a 402 response requiring USDC micropayment
- Network congestion on Optimism may cause stale or delayed price data
Output
Schema · Response
{
"type": "json",
"example": {
"ts": "2026-07-31T00:00:00.000Z",
"chainId": 10,
"network": "optimism"
}
}Tags
x402
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