# DYOE Know Your Agent (KYA) — Transaction Pre-flight Vetting

> DYOE Know Your Agent (KYA) — Transaction Pre-flight Vetting is a paid API for AI agents from agents.dyoeway.org, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Vets a payment transaction by checking the counterparty domain for scam/fraud/phishing risk and the payee wallet for OFAC sanctions, then returns a signed go/caution/stop attestation.

## Facts

- Endpoint: GET https://agents.dyoeway.org/transaction
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dyoe-know-your-agent-kya-transaction-pre-flight-vetting-4df2cbb2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ppzu6siI7TkIGVAfLrtHD

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 dyoe-know-your-agent-kya-transaction-pre-flight-vetting-4df2cbb2
```

Example prompt: Before you send that $500 payment, check whether merchant.com is a legitimate site and whether wallet 0xABC...123 is safe to pay — give me a go or stop recommendation.

## When to prefer this

Choose this endpoint when an AI agent needs a single pre-payment vetting call that simultaneously checks domain legitimacy (scam/phishing/rug) and wallet safety (OFAC sanctions) before executing a transaction — instead of making three separate calls to a fraud API, a domain reputation API, and a sanctions screening API. Best for agentic payment flows where speed and a signed, verifiable attestation matter.

## Known failure modes

- Invalid or malformed wallet address returns an error or low-confidence result
- Domain not resolvable or newly registered may return limited trust data
- OFAC database lookup delays could cause timeouts
- Missing required parameters (domain, wallet) returns a 400-level error
- Payment of $0.10 USDC not sent correctly results in 402 Payment Required

## How this service works

DYOE Know Your Agent (KYA) — the pay-safely pre-flight before an agent sends money. ONE call vets the whole deal: is the counterparty SITE legit (scam/fraud/phishing/rug) AND is the payee WALLET safe (OFAC-sanctioned? disposable?), weighed against amount vs. policy. Returns proceed/caution/stop + reasons + a signed, verifiable attestation — one go/no-go instead of three calls. Input: ?domain=merchant.com&wallet=0x...&amount=500

## Output

Returns a tri-state decision (proceed / caution / stop), a list of reasons explaining the verdict, a domain trust assessment (scam/fraud/phishing/rug-pull risk), a wallet status (OFAC-sanctioned or disposable flag), and a signed, verifiable attestation — all in a single response.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "amount": {
       "type": "number",
       "description": "Amount in USD being considered"
      },
      "domain": {
       "type": "string",
       "description": "Merchant/counterparty domain, e.g. merchant.com"
      },
      "wallet": {
       "type": "string",
       "description": "Payee wallet address, e.g. 0x..."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dyoe-know-your-agent-kya-transaction-pre-flight-vetting-4df2cbb2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.dyoeway.org](https://www.zero.xyz/host/agents.dyoeway.org/llms.txt)