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MEV Exposure Detector
x402
MEV Exposure Detector is a paid API for AI agents from mevdetector.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Detects MEV attacks (sandwich attacks, frontrunning, backrunning) on DEX swap transactions by scanning block-adjacent transactions and returning a signed exposure signal.
Price / call$0.001
Success—
StatusUnknown
How this service works
Detects sandwich attacks and frontrunning by scanning block-level trade ordering.
Output
Returns a signed MEV exposure signal with one of four classifications: no_swap, swap_exposed, frontrun_risk, or sandwich — along with an Ed25519 signature attesting to the result's authenticity.
Example use cases
Example prompt
“Can you check if this Base chain transaction was sandwich attacked or frontrun: 0x3a9f21c8b47d0e9d2fbc34a1e056c78d9e1234567890abcdef1234567890abcd?”
Technical details
Endpoint
POSThttps://mevdetector.hergertsynthora.com/serviceWhen to prefer
Use this endpoint when you need to quickly classify whether a specific DEX swap transaction was exposed to MEV attacks, particularly sandwich attacks, frontrunning, or backrunning. Prefer this over general block explorers when you need a structured, signed signal for programmatic consumption rather than raw transaction data.
Side effects
- Invalid or malformed transaction hash returns an error
- Transaction not found on the specified chain
- Unsupported chain identifier provided
- Network timeout when scanning block-adjacent transactions
- Transaction is not a DEX swap (returns no_swap signal)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | TX hash or wallet address |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| ok | boolean | |
| niche | string | |
| result | object |
Tags
x402
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