# VERIFY QuickCheck — x402 Resource Transaction Intelligence

> VERIFY QuickCheck — x402 Resource Transaction Intelligence is a paid API for AI agents from verify.inferenceview.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Checks an x402/MCP resource URL before payment, returning identity history, wallet stability, price percentile, change events, live protocol probe results, and a risk verdict (ALLOW/REVIEW/DENY)

## Facts

- Endpoint: POST https://verify.inferenceview.com/check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verify-quickcheck-x402-resource-transaction-intelligence-a188ae7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zsiK81o0XJ2C6Fd08vr_F

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 verify-quickcheck-x402-resource-transaction-intelligence-a188ae7c -d '<json body>'
```

Example prompt: Before you pay for that x402 resource at https://api.example.com/data, run a VERIFY QuickCheck on it so I know if it's ALLOW, REVIEW, or DENY — I want to see the price percentile and whether the wallet has a stable history.

## When to prefer this

Use this endpoint whenever an AI agent is about to make a payment to an unknown or unverified x402/MCP resource and needs a pre-payment risk check. It is specifically designed for the x402 ecosystem and draws on longitudinal daily snapshots of the x402 Bazaar, making it more accurate than generic URL scanners or reputation services that lack x402-specific market and wallet data. Prefer it over generic fraud detection APIs when the resource is a paid x402 endpoint.

## Known failure modes

- URL not found in x402 Bazaar history — returns limited or no longitudinal data
- Invalid or non-x402 URL provided — returns validation error
- Endpoint unreachable during live probe — probe result marked as failed
- New resource with no snapshot history — verdict may default to REVIEW due to insufficient data
- Rate limiting or payment failure — call rejected if USDC payment is not processed

## How this service works

VERIFY QuickCheck — agent transaction intelligence. Before your agent pays an unknown x402/MCP resource: identity history, wallet stability, price percentile vs the observed market, change events, live protocol probe, risk verdict (ALLOW/REVIEW/DENY). Built on daily longitudinal snapshots of the entire x402 Bazaar.

## Output

Returns a structured risk assessment including: the resource's identity and ownership history, wallet stability metrics, how the listed price compares to the observed market (price percentile), any recent change events (URL, price, or operator changes), results from a live protocol probe of the endpoint, and a final risk verdict of ALLOW, REVIEW, or DENY to guide the agent's payment decision.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "description": "The x402 resource URL your agent is about to pay"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verify-quickcheck-x402-resource-transaction-intelligence-a188ae7c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from verify.inferenceview.com](https://www.zero.xyz/host/verify.inferenceview.com/llms.txt)