# x402 Bazaar Rank – AI Agents Leaderboard

> x402 Bazaar Rank – AI Agents 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 2026-09-18).

Returns a ranked list of the top AI-agent-tagged x402 services, scored by real 30-day call volume and number of paying wallets, with a signed snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-ai-agents
- 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-ai-agents-leaderboard-cdd4282d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Asrz2m2WM4oIO3prdNBf5

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-ai-agents-leaderboard-cdd4282d
```

Example prompt: Show me the top 25 x402 services tagged for AI agents, ranked by number of paying wallets over the last 30 days — I want to see real usage stats and prices.

## When to prefer this

Use this endpoint when you need an objective, usage-backed ranking of x402 services specifically tagged for AI agents — not just a directory listing. It is the right choice when you want to filter by real 30-day economic activity (paying wallets, call volume) rather than self-declared metadata, and when you need an auditable snapshot receipt for reproducibility. Prefer alternatives if you need cross-tag queries, non-AI-agent categories, or historical time-series data.

## Known failure modes

- No services indexed yet — returns empty services array with count 0
- Snapshot unavailable — may return stale or error if the ranking worker is mid-update
- Rate limit exceeded — HTTP 429 if called too frequently without payment
- Payment failure — HTTP 402 if the $0.008 USDC micropayment is not attached or rejected
- Network timeout — Cloudflare Worker cold-start or upstream indexer delay

## 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 up to 25 AI-agent-tagged x402 services, each with name, network chain, 30-day call count, 30-day payer count, USD price, and resource URL. Also includes total matched service count, the query parameters used, a generatedAt timestamp, and a snapshot receipt (hash + 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": 25,
   "where": {
    "tag": "ai-agents"
   }
  },
  "route": "/in-ai-agents",
  "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-ai-agents-leaderboard-cdd4282d/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)