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OFAC SDN Blockchain Address Screener
x402
OFAC SDN Blockchain Address Screener is a paid API for AI agents from sanctions.nsgoods.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Screens a blockchain address against the OFAC Specially Designated Nationals (SDN) list and returns a cryptographically signed verdict indicating whether the address is sanctioned
Price / call$0.005
Success—
StatusUnknown
How this service works
Signed multi-chain OFAC SDN address screening (USDC on Base or Solana)
Output
A JSON object containing: the queried address, a boolean 'sanctioned' field, a verdict string ('clean' or 'deny'), the signing key identity ('signed_by'), a cryptographic signature over the result, the optional chain hint, the matched SDN label if applicable, and a timestamp of the SDN snapshot used for the check.
Example use cases
Pre-payment compliance check
“I'm about to send USDC to 0xAbCd1234... on Ethereum — can you check that address against the OFAC sanctions list and get me a signed verdict before I proceed?”
Solana wallet AML screening
“Screen this Solana wallet address 9xQeWvG3NL... for OFAC sanctions and tell me whether it's flagged, and include the cryptographic signature so I can log it for our compliance records.”
Automated DeFi onboarding gate
“Before we whitelist this new user's Bitcoin address bc1qxy2k... in our platform, check it against the OFAC SDN list and return a signed clean or deny verdict we can store as proof of due diligence.”
Technical details
Endpoint
GEThttps://sanctions.nsgoods.org/screenWhen to prefer
Choose this endpoint when you need a cryptographically signed, auditable OFAC sanctions verdict for a blockchain address — particularly when compliance records requiring non-repudiable proof are needed. It supports multi-chain addresses (EVM, Bitcoin, Solana, Tron, etc.) and charges only $0.005 USDC per call, making it cost-effective for high-volume screening. Prefer it over unverified or unsigned screening tools when you need a verifiable signature for audit trails or regulatory documentation.
Side effects
- Missing 'address' query parameter returns a 400-level error
- Malformed or invalid address format may return an error or an unmatched result
- SDN snapshot may be slightly stale if not recently refreshed (sdn_snapshot_at indicates age)
- Network or service unavailability returns a 5xx error
- Payment failure or insufficient USDC balance causes a 402 Payment Required response
- Unsupported chain format may result in advisory mismatch since matching is global by address value
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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