# x402 Seller Trust Check

> x402 Seller Trust Check is a paid API for AI agents from agent-data.centorprat.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns trust signals for an x402 API seller — Bazaar stats, wallet co-usage, tunnel warnings, and price flags — to help agents decide whether to pay

## Facts

- Endpoint: GET https://agent-data.centorprat.workers.dev/agent/seller-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-seller-trust-check-5d27e3f1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9SR7P4H0tIOsve6p9zD_v

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 x402-seller-trust-check-5d27e3f1
```

Example prompt: Before paying, can you check whether https://api.example.com/some-endpoint is a trustworthy x402 seller — I want to see its Bazaar stats, how many people have paid it, any tunnel or price warnings, and whether its wallet is shared with other hosts.

## When to prefer this

Use this endpoint when an AI agent is about to make an x402 micropayment and needs a quick trust signal about the seller before committing funds. It is the right choice when you have an endpoint URL, host, or payTo wallet address and want Bazaar-sourced statistics (call volume, payer count, revenue) plus co-wallet and tunnel warnings. Prefer this over generic blockchain lookups when the seller operates in the x402 ecosystem and you want marketplace-specific social proof and pricing context.

## Known failure modes

- URL or wallet address not found in Bazaar — returns empty or null record
- Invalid input format (non-URL, non-address string) — may return error or empty result
- Seller is new with no Bazaar history — all stats will be zero or missing
- Temporary tunnel domain not resolvable at time of check — warning flag set but data may be incomplete
- Rate limiting or upstream Bazaar API unavailability — may return stale or partial data

## How this service works

Pay-per-call data and tools for AI agents, $0.002-0.01 per call in USDC via x402 (Base, Polygon or Solana), no account or API key; MAX tiers ($0.05-0.25) run deeper jobs. Agent toolkit: web search, search + read top pages, any page as clean markdown with a prompt-injection check, which-x402-API-to-call recommender, seller check. Data: Google Maps places with contacts, YouTube video data and transcripts, job listings (Indeed, LinkedIn, 13 boards), Google Ads Transparency, TikTok comments, Pinterest, Airbnb, Redfin, AliExpress, app stores, live sports, website and SEO checks, Shopify store tech stacks, and onchain token / address risk checks.

## Output

Returns a structured profile including: the seller's Bazaar record (number of endpoints, 30-day call and unique payer counts, estimated revenue, price range, timestamp of last call), a list of other hosts sharing the same payTo wallet, and flags for temporary-tunnel detection and price anomalies. Data is public and informational — signals to inform a payment decision, not a definitive verdict.

## 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": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Endpoint URL, host, or payTo wallet address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "host": "example.com",
  "found": true,
  "signals": [],
  "demand30d": {
   "calls": 29783,
   "revenueUsdEstimate": 777.39
  },
  "endpoints": 15
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-seller-trust-check-5d27e3f1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data.centorprat.workers.dev](https://www.zero.xyz/host/agent-data.centorprat.workers.dev/llms.txt)