# x402 Bazaar Rank – Deep x402 Tag Discovery

> x402 Bazaar Rank – Deep x402 Tag Discovery is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-24).

Returns a ranked list of x402 services tagged 'x402', scored by real 30-day call volume and unique paying wallets, with a verifiable snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-x402-deep?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-deep-x402-tag-discovery-c0f7544d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9R23YAmgn5m0QSXRtKY4y

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-deep-x402-tag-discovery-c0f7544d
```

Example prompt: Show me the top x402 services right now — ranked by who actually has paying wallets and real call volume over the last 30 days, with a snapshot receipt so I can verify the data.

## When to prefer this

Choose this endpoint when you need ranked, usage-verified discovery of x402 protocol services specifically — particularly when you want real 30-day call and payer data rather than self-reported metadata. Prefer over generic API directories when you need on-chain-adjacent proof of demand and a verifiable snapshot receipt for auditability.

## Known failure modes

- No services indexed for the x402 tag — returns empty array with count 0
- Snapshot stale or scoring revision mismatch — receipt hash may not match expected revision
- Payment not received — HTTP 402 returned before data is served
- Worker cold-start latency causing timeout on first call
- Malformed query parameters resulting in 400 Bad Request

## 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 array of x402 services tagged 'x402', each with name, network (chain ID), 30-day call count, 30-day unique paying wallets, price in USD, and resource URL. The response also includes the total matched count, query metadata (operator, limit, tag filter), the declaring agent identity, generation timestamp, and a snapshot hash plus 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": "x402"
   }
  },
  "route": "/in-x402-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-deep-x402-tag-discovery-c0f7544d/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)