MEV Exposure Detector: detects sandwich attacks, frontrunning, and backrunning on DEX swaps by scanning block-adjacent transactions. Signal: no_swap/swap_exposed/frontrun_risk/sandwich. Ed25519-signed. POST 0x<txhash> or {"tx_hash":"0x..","chain":"base"}.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.03 USDC | 0x1080...7dE0 |