{"uid":"cap_8aabdPPq9gyMOPgGpfO8h","slug":"x402-donnyautomation-com-best-execution-router-op-mainnet-18b3acb6","name":"x402.donnyautomation.com – Best Execution Router (OP Mainnet)","description":"Pay-per-call (x402/USDC on Base) market-data, geocoding, randomness and hook-risk endpoints. Free demo route included.","url":"https://x402.donnyautomation.com/optimism/route?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"ts":"2026-07-31T00:00:00.000Z","chainId":10,"network":"optimism"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_u2bjko0-D5dktqMWgNlVq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"What's the best DEX to buy WETH/USDC on Optimism right now — compare SushiSwap and Uniswap v3 and tell me the arbitrage spread and optimal trade size.","exampleUseCases":[{"title":"Arbitrage bot venue selection on Optimism","prompt":"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."},{"title":"Best execution routing before a large swap","prompt":"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?"},{"title":"Live DEX price monitoring for trading agent","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T04:26:16.660Z","isFirstParty":false,"canonicalSlug":"x402-donnyautomation-com-best-execution-router-op-mainnet-18b3acb6"}