# x402 Bazaar Rank – Inbound Volume Leaderboard

> x402 Bazaar Rank – Inbound Volume Leaderboard is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-23).

Returns a ranked list of x402 services sorted by inbound call volume and paying-wallet activity over the past 30 days, with a signed snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-volume?utm_source=zero.xyz
- Price: $0.008/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-inbound-volume-leaderboard-f1025b94
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9_B2USUTcMzo6PNQ5hjXP

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-inbound-volume-leaderboard-f1025b94
```

Example prompt: Show me the top 25 x402 services ranked by inbound call volume over the last 30 days, including how many paying wallets each one has.

## When to prefer this

Choose this endpoint when you need an objective, usage-signal-ranked view of the x402 service marketplace — specifically sorted by real 30-day inbound call volume and paying wallets. Prefer it over generic API directories when you want to surface only services with demonstrated real-world traction, or when you need a verifiable snapshot (hash + revision) for auditing which services were ranked at a point in time.

## Known failure modes

- Invalid or missing query parameters return a 400 error
- Payment not included or insufficient USDC (0.008) results in a 402 Payment Required response
- Snapshot data may be slightly stale if indexer has not refreshed recently
- Empty result set if no services match the specified tag filter
- Rate limiting or worker timeout on Cloudflare edge may return 503

## How this service works

Use when an agent needs the top x402 services tagged 'volume'. Returns Highest-demand x402 services tagged 'volume': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each.

## Output

A JSON object containing a ranked array of up to N x402 services, each with their name, blockchain network, 30-day call count, price in USD, resource URL, and 30-day unique payer count. Also includes query metadata (operator, limit, filter tag), total matched service count, who declared the data, a snapshot hash for auditability, and a generation timestamp.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "generatedAt",
  "route",
  "declaredBy",
  "query",
  "matched",
  "count",
  "services"
 ],
 "properties": {
  "count": {
   "type": "number"
  },
  "query": {
   "type": "object",
   "properties": {
    "by": {
     "type": "string"
    },
    "op": {
     "type": "string"
    },
    "limit": {
     "type": "number"
    },
    "where": {
     "type": "object",
     "properties": {
      "tag": {
       "type": "string"
      }
     }
    }
   }
  },
  "route": {
   "type": "string"
  },
  "matched": {
   "type": "number"
  },
  "services": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "name": {
      "type": "string"
     },
     "network": {
      "type": "string"
     },
     "calls30d": {
      "type": "number"
     },
     "priceUsd": {
      "type": "number"
     },
     "resource": {
      "type": "string"
     },
     "payers30d": {
      "type": "number"
     }
    }
   }
  },
  "declaredBy": {
   "type": "string"
  },
  "generatedAt": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-bazaar-rank-inbound-volume-leaderboard-f1025b94/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)