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RelAI MEV Detection
x402
RelAI MEV Detection is a paid API for AI agents from api.relai.fi, paid per call via x402, $1.15/call, status unknown (last checked 2026-09-14).
Detects and analyzes MEV activity including sandwich attacks, front-running, and toxic flow across major blockchains using AI-powered analysis.
Price / call$1.15
Success—
StatusUnknown
How this service works
Detect MEV (Maximal Extractable Value) attacks and sandwich trades. Supported chains: ethereum, base, bsc, arbitrum, polygon. Default chain: ethereum. Required params: none (chain/limit/timeperiod are optional and defaulted).
Output
Returns a structured analysis report identifying detected MEV activity types (sandwich attack, front-running, toxic flow), confidence scores, involved addresses, and an AI-generated explanation of the malicious behavior observed.
Example use cases
Example prompt
“Can you check this Ethereum transaction 0xabc123... for MEV activity — specifically whether it was sandwiched or front-run, and give me an AI-powered breakdown of any toxic flow involved?”
Technical details
Endpoint
POSThttps://api.relai.fi/relay/1769629274857/x402/bitquery/mevdetectionWhen to prefer
Use this endpoint when you need AI-powered MEV detection with multi-chain support and detailed classification of attack types (sandwich, front-running, toxic flow). Prefer this over generic block explorers or raw Bitquery queries when you need an actionable, interpreted result rather than raw transaction data.
Side effects
- Invalid transaction hash returns 400 error
- Unsupported chain returns error or empty result
- Transaction not yet indexed returns no data
- Rate limiting or payment failure returns 402 or 429
- Ambiguous input parameters return partial or empty analysis
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Blockchain to query (e.g., base, ethereum, bsc, solana) |
| limit | string | Maximum number of results to return (default: 10, max: 500) |
| timeperiod | string | Time period for analysis (e.g., 1h, 24h, 7d, 30d) |
Tags
x402
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