# China Supplier Verification API

> China Supplier Verification API is a paid API for AI agents from x402-stable-door.lu7897859.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Verifies Chinese suppliers by checking if they are a factory or trader, assessing payment red flags, and returning a risk rating with supporting signals.

## Facts

- Endpoint: POST https://x402-stable-door.lu7897859.workers.dev/verify_supplier
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/china-supplier-verification-api-beac645f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0RyGxwyyJl5oRViAHsBap

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 china-supplier-verification-api-beac645f -d '<json body>'
```

Example prompt: Can you verify if Shenzhen Greenway Electronics Co., Ltd. is a real factory or just a trader, and flag any payment red flags before I send a deposit?

## When to prefer this

Choose this endpoint when you need a fast, per-call, pay-as-you-go factory vs. trader verification and risk signal check for Chinese suppliers specifically — particularly useful before initiating payments or purchase orders. Prefer this over generic company lookup APIs when you need China-specific signals like USCI validation, factory registration status, and import payment red flags in a single call.

## Known failure modes

- Company name not found in Chinese business registries — returns ok:false with empty signals
- Invalid or malformed USCI number — may return HIGH risk or error
- Ambiguous company name matching multiple entities — signals may reflect wrong entity
- Payment required but not received — 402 Payment Required response blocking the call
- Service unavailable or worker error — 5xx response with no data

## How this service works

AI tools for vetting Chinese suppliers and import risk before money moves: factory-vs-trader verification, landed cost, payment red flags, audit checklist, certification checks, full audit chain. Pay-per-call in USDC on Base via x402.

## Output

Returns a boolean status, a risk level enum (LOW, MEDIUM, or HIGH), a boolean indicating whether the company is a factory (true) or trader (false), and an array of human-readable risk signal strings explaining the assessment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "company_name"
 ],
 "properties": {
  "country": {
   "type": "string",
   "description": "Country of registration, default CN"
  },
  "company_name": {
   "type": "string",
   "description": "Chinese company name or USCI number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "ok": {
   "type": "boolean"
  },
  "risk": {
   "enum": [
    "LOW",
    "MEDIUM",
    "HIGH"
   ],
   "type": "string"
  },
  "signals": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "is_factory": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/china-supplier-verification-api-beac645f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-stable-door.lu7897859.workers.dev](https://www.zero.xyz/host/x402-stable-door.lu7897859.workers.dev/llms.txt)