Ethereum sandwich attack checker

Was your swap targeted by a sandwich attack?

Enter an Ethereum transaction hash or wallet address to check for sandwich attack activity and review the on-chain evidence.

Read-only analysis · no wallet connection or private key required

1 · Locate the transactionResolve its receipt and exact position in the mined block.

2 · Classify activityDecode supported calls, swap logs, and nearby transaction patterns.

3 · Grade the evidenceSeparate high-confidence patterns from candidates that need deeper tracing.

Supports mined Uniswap v2 and v3 swap transactions on Ethereum Mainnet and Sepolia through configured RPC providers. The detector inspects up to 12 transactions on either side. Candidate signals are not proof of intent or profit.

Types of MEV What is a sandwich attack?How detection works Methodology Supported networks FAQ

Was your swap targeted by a sandwich attack?

MEV signals

Evidence