# Cheetah Security AML / Counterparty Screening

> Cheetah Security AML / Counterparty Screening is a paid API for AI agents from x402.cheetahsecurity.de, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Screens a Base EVM wallet address for OFAC sanctions, on-chain exposure risk, and known scam lists, returning a verdict and risk score

## Facts

- Endpoint: GET https://x402.cheetahsecurity.de/screen
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cheetah-security-aml-counterparty-screening-5818234f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DjATh8nW0iNNO3Gu8pm9G

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 cheetah-security-aml-counterparty-screening-5818234f
```

Example prompt: Before I send funds, can you screen the Base wallet 0x4e83362412b8d1bec281594ceA3052c8eb01311C for OFAC sanctions, scam list hits, and overall AML risk?

## When to prefer this

Use this endpoint when you need a combined AML + OFAC sanctions + scam-list check specifically for Base/EVM wallet addresses before executing on-chain payments or interactions. Prefer this over generic reputation scores when regulatory compliance (OFAC) is a hard requirement, or when you need explicit reasons and sources for any flags rather than just a numeric score. Ideal for AI agent wallets that need to automate counterparty due diligence at low cost ($0.02/call).

## Known failure modes

- Invalid or malformed wallet address (not 0x + 40 hex) returns a 400-style error
- Address not found on Base network may return a low-confidence result
- Payment not included or insufficient USDC results in 402 Payment Required
- Service unavailable or upstream data source outage returns 5xx error
- Rate limiting may occur for high-frequency callers

## How this service works

AML / counterparty screening for a Base agent wallet (OFAC sanctions + exposure + scam list)

## Output

Returns a JSON object with: a verdict string (e.g. 'clean', 'risky', 'blocked'), a numeric risk_score, an array of reasons explaining any flags, a signals object with detailed risk indicators, and an array of sources that contributed to the assessment.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "agent"
     ],
     "properties": {
      "agent": {
       "type": "string",
       "description": "Base EVM address (0x + 40 hex) to screen"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "address": {
       "type": "string"
      },
      "reasons": {
       "type": "array"
      },
      "signals": {
       "type": "object"
      },
      "sources": {
       "type": "array"
      },
      "verdict": {
       "type": "string"
      },
      "risk_score": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cheetah-security-aml-counterparty-screening-5818234f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.cheetahsecurity.de](https://www.zero.xyz/host/x402.cheetahsecurity.de/llms.txt)