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LimitGuard Blockchain Wallet Verification
x402
LimitGuard Blockchain Wallet Verification is a paid API for AI agents from api.limitguard.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-10).
Verifies a blockchain wallet address by checking on-chain activity and returning risk flags and an activity score
Price / call$0.1
Success—
StatusUnknown
How this service works
MCP tool: Screen a wallet: OFAC SDN address match, on-chain signals (contract check, native and USDC balance, transaction count, first seen on Base) and named risk rules with up to 3 advice items. On Base, also reports any ERC-8004 agent the wallet owns and its open on-chain reputation as descriptive signals, never scored. $0.11. Accepts EVM (0x...) and Solana (base58) addresses.
Output
Returns a JSON object with: wallet_valid (boolean indicating if the address is a valid, active wallet), activity_score (0-100 integer reflecting on-chain engagement), and risk_flags (array of risk indicators such as sanctions hits, mixer usage, or suspicious patterns)
Example use cases
Example prompt
“Before I send payment, can you verify that the wallet address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Base (eip155:8453) is safe — check its on-chain activity and flag any risk issues?”
Technical details
Endpoint
POSThttps://api.limitguard.ai/v1/mcp/verify-wallet?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, lightweight on-chain risk check for a specific wallet address before executing a transaction, onboarding a counterparty, or screening an agent wallet. Prefer this over full entity compliance checks when you have a wallet address (not a name/company) and need a binary validity signal plus risk flags without a full KYB/KYC report.
Side effects
- Invalid wallet address format returns validation error
- Unsupported chain_id returns error or defaults to eip155:8453
- Wallet with no on-chain history may return low activity_score with empty risk_flags
- Payment failure (insufficient USDC balance) blocks the request
- Newly deployed wallet may have limited data, reducing confidence in results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain_id | string | CAIP-2 chain ID (default: eip155:8453); base, eth, solana, btc also accepted |
| wallet_address | string | Blockchain wallet address |
Output
Schema · Response
{
"type": "json",
"example": {
"advice": [
{
"why": "no OFAC SDN match as of 2026-09-23; no rule fired",
"action": "proceed with standard monitoring",
"expected_result": "re-screen on material change"
}
],
"sanctions": {
"hit": false,
"as_of": "2026-09-23",
"lists": [],
"source": "ofac_sdn",
"status": "ok",
"programs": []
},
"risk_level": "low",
"risk_score": 0,
"rules_fired": [],
"unavailable": []
}
}Tags
x402
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Zero review prompt (fires after every successful call)
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