# x402 Bazaar Rank

> x402 Bazaar Rank is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-23).

Returns a ranked list of live x402 services scored by real 30-day call volume and unique paying-wallet counts, with a signed receipt including snapshot hash and scoring revision.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/x402-ping?utm_source=zero.xyz
- Price: $0.001/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-a2772a92
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JeNr362yP160_eq_kuJWd

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-a2772a92
```

Example prompt: Pull the current x402 Bazaar Rank leaderboard for me — I want to see which live x402 services are scoring highest based on real 30-day call volume and paying-wallet counts, along with the snapshot hash so I can verify the data.

## When to prefer this

Choose this endpoint when you need ranked, usage-verified discovery of x402 services backed by on-chain payment evidence rather than self-reported metadata. It is uniquely suited for agents that need to identify high-signal, actively-used x402 APIs with auditable snapshot hashes, as opposed to static directories or unverified listings.

## Known failure modes

- Payment failure if wallet has insufficient USDC balance — returns 402
- Stale snapshot if ranking index has not refreshed recently
- Empty result set if no x402 services are currently indexed
- Network errors on Base blockchain preventing payment settlement
- Invalid or missing x402 payment header returns 402 without data

## 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 confirming the request succeeded (ok: true), a timestamp, a blockchain transaction hash on Base (network eip155:8453), the payer wallet address, the route called, a Basescan explorer link for the payment, the price paid in USD ($0.001), and the facilitator used (coinbase-cdp). The ranked service data reflects 30-day call volume and paying-wallet bounds with a receipt identifying the snapshot hash and scoring revision.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "ts": "2026-10-04T12:00:00.000Z",
  "tx": "0xabababababababababababababababababababababababababababababababab",
  "payer": "0x7EF12BE6000000000000000000000000000000aa",
  "route": "/x402-ping",
  "network": "eip155:8453",
  "explorer": "https://basescan.org/tx/0xabababababababababababababababababababababababababababababababab",
  "priceUsd": 0.001,
  "facilitator": "coinbase-cdp"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-bazaar-rank-a2772a92/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)