# ARAKEL Machine Evidence Network – Wallet OFAC Preflight

> ARAKEL Machine Evidence Network – Wallet OFAC Preflight is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Free preflight check that queries official U.S. Treasury OFAC sanctions data to determine whether a wallet address is sanctioned before initiating a transfer.

## Facts

- Endpoint: GET https://proof.arakelproof.space/v1/agent/wallet-preflight?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arakel-machine-evidence-network-wallet-ofac-preflight-d0f5f201
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IsqBI5DxFyrSdKDCu6y31

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 arakel-machine-evidence-network-wallet-ofac-preflight-d0f5f201
```

Example prompt: Before I send USDC to 0xAbC123..., can you run an OFAC sanctions preflight on that wallet address to make sure it's not blacklisted by the U.S. Treasury?

## When to prefer this

Use this endpoint when an AI agent or application needs machine-verifiable, cryptographically signed evidence of OFAC sanctions status for a wallet address prior to executing a crypto transfer. The free preflight tier makes it ideal as a low-cost compliance gate before committing to a payment. Prefer this over generic blockchain analytics services when you need official U.S. Treasury OFAC sourcing and a signed evidence record for auditability.

## Known failure modes

- Missing required 'q' query parameter returns validation error
- Invalid date-time format for 'from' or 'to' parameters causes schema rejection
- Wallet address not recognized or malformed may return INCONCLUSIVE
- Network or upstream OFAC data source unavailability may produce error or INCONCLUSIVE result
- Rate limiting or payment failure on paid endpoints blocks access

## How this service works

$0.001 OFAC destination-wallet preflight for autonomous agents, plus machine-verifiable official-source evidence over x402 USDC on Base.

## Output

Returns a JSON object with a result field of OBSERVED, NOT_OBSERVED, or INCONCLUSIVE indicating whether the queried wallet address appears in OFAC sanctions data, along with a structured evidence array from the official OFAC source, an Ed25519 cryptographic signature for machine-verifiability, and a count of observed matches. Schema version arakel.machine-evidence.v2.

## 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": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "AI-agent pre-transfer wallet compliance preflight against official U.S. Treasury OFAC sanctions data."
      },
      "to": {
       "type": "string",
       "format": "date-time",
       "description": "Optional UTC end. Defaults to now."
      },
      "from": {
       "type": "string",
       "format": "date-time",
       "description": "Optional UTC start. Defaults to the last 1 days."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "OBSERVED|NOT_OBSERVED|INCONCLUSIVE",
  "schema": "arakel.machine-evidence.v2",
  "source": {
   "id": "ofac"
  },
  "evidence": [
   {}
  ],
  "signature": {
   "alg": "Ed25519"
  },
  "observed_count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arakel-machine-evidence-network-wallet-ofac-preflight-d0f5f201/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proof.arakelproof.space](https://www.zero.xyz/host/proof.arakelproof.space/llms.txt)