# x402 Bazaar Rank – Utility Tag Deep Discovery

> x402 Bazaar Rank – Utility Tag Deep Discovery is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-23).

Returns ranked x402 services tagged 'utility', ordered by 30-day paying-wallet activity, with snapshot hash and scoring revision receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-utility-deep?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-utility-tag-deep-discovery-7dd2e9ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F3-PHDacNxfUOLNS7ythp

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-bazaar-rank-utility-tag-deep-discovery-7dd2e9ff
```

Example prompt: Show me the top utility services on the x402 market right now, ranked by how many unique paying wallets called them in the last 30 days — I want to see names, prices, and call counts.

## When to prefer this

Choose this endpoint when you specifically need to discover x402 utility-tagged services ranked by real economic activity (paying wallets and call volume) rather than self-reported metadata. It is preferable over generic API directories when you need live market signal, micropayment-native services on EVM networks, and an auditable snapshot receipt. Use it when building agents that need to select or compare utility APIs by proven demand rather than marketing claims.

## Known failure modes

- No services found matching utility tag — returns empty services array with count 0
- Snapshot data stale if index hasn't refreshed — generatedAt timestamp will indicate age
- Invalid or malformed properties parameter — may return 400 or empty result
- Service unavailable if Cloudflare Worker is down — HTTP 5xx with no body
- Rate limiting or payment failure — HTTP 402 if USDC payment not accepted

## How this service works

An open index of the machine-to-machine (agent) economy. x402 routes: ranked discovery over the live x402 service market, every indexed service scored by real 30-day calls and paying-wallet bounds, with a receipt naming the snapshot hash and scoring revision. /economy routes, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry): each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered.

## Output

A JSON object containing a ranked list of x402 utility-tagged services (up to the limit), each with service name, network (EIP-155 chain), 30-day call count, price in USD, resource URL, and unique paying wallets in 30 days. Also includes the total matched count, query metadata, the route used, who declared it, a snapshot timestamp, and a receipt identifying the snapshot hash and scoring revision for auditability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 25,
  "query": {
   "by": "payers",
   "op": "top",
   "limit": 100,
   "where": {
    "tag": "utility"
   }
  },
  "route": "/in-utility-deep",
  "matched": 359,
  "services": [
   {
    "name": "forecast api",
    "network": "eip155:8453",
    "calls30d": 310,
    "priceUsd": 0.01,
    "resource": "https://api.example.com/forecast",
    "payers30d": 42
   }
  ],
  "declaredBy": "agent",
  "generatedAt": "2026-09-17T12:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-bazaar-rank-utility-tag-deep-discovery-7dd2e9ff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev](https://www.zero.xyz/host/x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/llms.txt)