# x402helper OFAC & EVM Address Screening

> x402helper OFAC & EVM Address Screening is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-31).

Screens an EVM wallet address for OFAC sanctions compliance and returns billing/rate data via a micropayment-gated GET endpoint.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/code?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402helper-ofac-evm-address-screening-e6f3f566
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gE7WGFDnakg1kQ4YujW23

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 x402helper-ofac-evm-address-screening-e6f3f566
```

Example prompt: Check if the Ethereum wallet address 0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE is on the OFAC sanctions list — screen it on the Base network.

## When to prefer this

Use this endpoint when you need a pay-per-call OFAC sanctions screen for EVM wallet addresses without a subscription, especially in agentic or automated pipelines that pay with USDC via x402 micropayments. Prefer this over subscription-based compliance APIs when call volume is low or unpredictable.

## Known failure modes

- Missing required 'address' query parameter returns an error
- Invalid or malformed 0x address format causes lookup failure
- Unsupported network value (outside base/ethereum/arbitrum/optimism/polygon/bnb) rejected
- Payment not submitted or insufficient USDC causes 402 Payment Required response
- Network-specific node outage may cause intermittent failures

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

Returns a JSON object with a success boolean and a result object containing OFAC screening status, compliance flags, and billing/rate verification data for the queried EVM address on the specified network.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "default": null,
       "description": "Address (0x..)"
      },
      "network": {
       "enum": [
        "base",
        "ethereum",
        "arbitrum",
        "optimism",
        "polygon",
        "bnb"
       ],
       "type": "string",
       "default": null,
       "description": "EVM network to read from (default base)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402helper-ofac-evm-address-screening-e6f3f566/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)