# Ethereum Address Sanctions & Scam Screening

> Ethereum Address Sanctions & Scam Screening is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).

Screens a single Ethereum address against sanctions lists and scam blocklists to determine if it is flagged as malicious or sanctioned

## Facts

- Endpoint: POST https://twin.unykorn.org/screen-sanctions?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ethereum-address-sanctions-scam-screening-a0f3ed23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tx7NoLK_BXcHEL4-RHgBa

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 ethereum-address-sanctions-scam-screening-a0f3ed23 -d '<json body>'
```

Example prompt: Can you screen the Ethereum address 0x742d35Cc6634C0532925a3b8D4C9C7b2f1a2b3c4 against sanctions and scam blocklists before I send any funds to it?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call sanctions and scam screening for individual Ethereum addresses without a subscription, especially in agentic workflows where compliance checks are triggered on-demand before transactions. Prefer this over full KYC providers when you only need address-level blocklist screening rather than identity verification, and when you want a cryptographically receipted proof of the check.

## Known failure modes

- Invalid address format (not a valid 0x-prefixed 40-hex-character Ethereum address) — likely returns a validation error
- Payment failure — insufficient USDC balance or x402 payment not accepted
- Address not found in blocklist data sources — returns clean result but data coverage may vary
- Service downtime or upstream blocklist provider unavailable — may return 5xx error
- Stale blocklist data — sanctions lists may not be real-time and could miss very recently added addresses

## How this service works

Screen one address against sanctions and scam blocklists — Genesis402 / UnyKorn Operator Network

## Output

Returns a JSON object indicating whether the check succeeded (ok: true), the type of check performed (screen-sanctions), a proof receipt containing a transaction hash, USD amount charged, and a unique receipt ID, plus the timestamp of when the check was generated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "address": {
     "type": "string",
     "pattern": "^0x[0-9a-fA-F]{40}$"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "screen-sanctions",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.008,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ethereum-address-sanctions-scam-screening-a0f3ed23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)