{"uid":"cap__AOPgzdx8zNZJyM3PE5P_","slug":"onchaininja-mev-detection-fd1060f6","name":"OnChaiNinja MEV Protection & Detection","description":"Alpha signals, whale tracking, rug scanning, and MEV protection across Base, Solana, Arbitrum, and more.","url":"https://x402ninnin.vercel.app/api/mev/%7Bchain%7D/%7Btx%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"mevDetected":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"3","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":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$3/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"3","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"3","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_foDjAn3ZJ2ct70ZHgbyjI","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"3","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scans a specific on-chain transaction on a given blockchain for MEV (Maximal Extractable Value) activity and protection status","exampleAgentPrompt":"Can you check if my transaction 0x4a7b9c2d1e8f3a56b0c9d2e7f4a1b8c3d9e6f2a5 on Base was hit by a sandwich attack or any MEV extraction?","exampleUseCases":null,"resultDescription":"Returns a JSON object indicating whether MEV was detected for the specified transaction on the given chain, with a boolean mevDetected field and potentially additional details about the type or severity of MEV activity observed.","failureModes":["Invalid chain identifier returns error or empty result","Invalid or malformed transaction hash returns error","Transaction not found on specified chain returns not-found error","Unsupported chain returns 400 or similar","Network timeout for slow RPC response","Payment failure (insufficient USDC) blocks access with 402"],"whenToPreferThis":"Use this endpoint when you need to determine whether a specific transaction hash on Base, Solana, Arbitrum, or another supported chain was subjected to MEV extraction, sandwich attacks, or front-running. Best suited for post-trade analysis or DeFi protection workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-11T06:30:16.705Z","isFirstParty":false}