# ChainVerdict OFAC SDN Address Screener

> ChainVerdict OFAC SDN Address Screener is a paid API for AI agents from chainverdict.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Checks a single EVM wallet address against the US OFAC SDN digital-currency address list and returns a signed match/no-match result for $0.001 per call

## Facts

- Endpoint: GET https://chainverdict.xyz/v1/screen/address/:addr
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chainverdict-ofac-sdn-address-screener-899d9af6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iLeMFblabxDhzGD7bk7-s

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability chainverdict-ofac-sdn-address-screener-899d9af6
```

Example prompt: Before I send USDC to 0x3f5CE5FBFe3E9af3971dD833D26BA9b5C936f0bE, screen that address against the US OFAC SDN sanctions list so I know if it's flagged.

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.001), verifiable OFAC SDN check for a single EVM address before executing an on-chain transaction. The Ed25519-signed response is ideal when you need an auditable proof of screening that can be verified offline. Prefer this over broader AML/KYT services when cost per call matters and OFAC US SDN coverage is sufficient for your use case. Not suitable when EU, UN, or UK/OFSI list coverage is required, or when you need a regulated AML service that discharges legal compliance obligations.

## Known failure modes

- Invalid or malformed EVM address returns a 400 error
- Address not found in list returns a no-match (not an error)
- Daily refresh lag may mean very recently added SDN entries are not yet reflected
- Payment failure or insufficient USDC balance returns a 402 Payment Required
- Service downtime could make the endpoint unreachable, returning 5xx errors
- Only screens OFAC SDN digital-currency addresses — EU, UN, UK/OFSI lists not covered

## How this service works

Screen an EVM address against the US OFAC SDN digital-currency address list at $0.001 — the cheapest sanctions lookup in the ecosystem, Ed25519-signed so you can verify it offline. Exact-list-match, refreshed daily. Screens that one list only — not EU, UN or UK/OFSI — and a non-match is not evidence the counterparty is legitimate. Not a regulated AML/KYT service and does not discharge any legal screening obligation.

## Output

Returns a signed JSON response indicating whether the queried EVM address matched the OFAC SDN digital-currency address list. The result includes the match status (hit or no-match), the screened address, the list date (refreshed daily), and an Ed25519 signature that allows offline verification of the result's authenticity. A no-match result does not certify the address is legitimate — it only confirms absence from this specific list.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "addr"
     ],
     "properties": {
      "addr": {
       "type": "string",
       "description": "EVM address to screen against the OFAC SDN list"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chainverdict-ofac-sdn-address-screener-899d9af6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chainverdict.xyz](https://www.zero.xyz/host/chainverdict.xyz/llms.txt)