# x402 Bazaar Rank – In-Market Data

> x402 Bazaar Rank – In-Market Data 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 2026-09-18).

Returns a ranked list of live x402 services ordered by real 30-day call volume and paying-wallet activity, with a snapshot hash receipt for auditability.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-market-data
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-in-market-data-890d8703
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Rl_0Yz9Zm-ocX4GbY2Xlp

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-in-market-data-890d8703
```

Example prompt: Show me the top 25 x402 services ranked by paying wallets in the market-data category, using the live 30-day call and payer stats from the x402 Bazaar.

## When to prefer this

Choose this endpoint when you need authoritative, usage-weighted rankings of live x402 services backed by real on-chain payment data rather than self-reported metadata. It is the right choice when you want to discover which APIs are actually being called and paid for in the x402 ecosystem, especially when you need a verifiable snapshot receipt for reproducibility or audit. Prefer it over static registries or unverified directories when freshness and real economic signal matter.

## Known failure modes

- No services match the requested tag filter — returns empty services array with count 0
- Invalid 'by' or 'op' query parameter — may return 400 or default ranking behavior
- Snapshot data is stale if the indexer hasn't refreshed — generatedAt timestamp reveals lag
- Payment not included or insufficient — returns HTTP 402 requiring $0.004 USDC
- Worker cold-start latency on first call after inactivity

## How this service works

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.

## Output

A JSON object containing a ranked array of x402 services with per-service fields: name, network (EIP-155 chain ID), 30-day call count, price in USD, resource URL, and 30-day payer count. The response also includes the total matched service count, the query parameters echoed back, the route, a generatedAt timestamp, a snapshot hash for auditability, and the scoring revision used.

## 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": 25,
   "where": {
    "tag": "market-data"
   }
  },
  "route": "/in-market-data",
  "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-in-market-data-890d8703/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)