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CrawlWitness Wallet Sanctions Check
x402
CrawlWitness Wallet Sanctions Check is a paid API for AI agents from api.crawlwitness.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-02).
Checks a crypto wallet address against the OFAC SDN sanctions list and returns sanctioned status, entity info, programs listed, and a signed receipt with the exact list version used
Price / call$0.005
Success—
StatusUnknown
How this service works
What a website allows for AI (robots.txt per AI bot, RSL, IETF AIPREF, TDMRep, noai, llms.txt, C2PA), with signed EAS receipts anchored on Base and an attested history of every signal. Paid calls use x402 (USDC on Base or Solana): no account, no API key.
Output
Returns a JSON object containing: a boolean 'sanctioned' flag, the name of the listed entity if sanctioned, the OFAC programs under which the address is listed, the exact SDN list version consulted, and a signed receipt for audit purposes. Unsanctioned addresses return sanctioned=false with no entity details.
Example use cases
Pre-payment compliance screening
“We're about to send 5000 USDC to wallet address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 — can you check it against the OFAC sanctions list first and show me the signed receipt before we proceed?”
DeFi protocol treasury guard
“Our treasury bot is about to interact with Solana address 9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin — please run an OFAC SDN sanctions check on it and tell me if it's sanctioned and under which program.”
Incoming crypto payment screening
“We just received a payment from Bitcoin address 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf Na — can you screen it against the OFAC SDN list and tell me the exact list version used so we have a record?”
Technical details
Endpoint
GEThttps://api.crawlwitness.com/v1/wallet-check?utm_source=zero.xyzWhen to prefer
Use this endpoint whenever an AI agent, autonomous treasury, or payment workflow needs to screen a crypto wallet address for OFAC SDN compliance before executing or receiving a transaction. It supports all major chain address formats (EVM, BTC, TRX, SOL, USDT, USDC) in a single call, returns a cryptographically signed receipt suitable for audit trails, and reports the exact list version used — making it ideal for regulated environments where proof-of-check is required. Prefer this over generic blockchain analytics when the specific requirement is US OFAC SDN list compliance with a verifiable receipt.
Side effects
- 400 Bad Request: invalid or malformed crypto address (not charged) — address fails format validation
- 503 Service Unavailable: no sanctions list is currently loaded on the server (not charged) — retry after delay
- Address not found in any supported chain format — returns 400
- Network timeout or upstream OFAC data unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"pago": {
"recibo": {
"firma": "0x…"
},
"transaccion": "0x…"
},
"lists": [
{
"list": "US OFAC SDN",
"sha256": "…",
"addresses": 1100,
"published": "10/30/2026"
}
],
"method": "wallet-check/1",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"matches": [
{
"list": "US OFAC SDN",
"asset": "ETH",
"entity": "LAZARUS GROUP",
"programs": [
"DPRK3"
],
"reference": "…"
}
],
"decision": "blocked",
"normalized": "0x098b716b8aaf21512996dc57eb0615e2383e2f96",
"sanctioned": true,
"address_type": "evm"
}
}Tags
x402
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