# P0 Agent Economy Index – Tools Leaderboard

> P0 Agent Economy Index – Tools 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 2026-10-20).

Returns a ranked list of the top x402-indexed tool services, scored by real 30-day calls and paying-wallet counts, with a snapshot receipt for auditability.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-tools?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/p0-agent-economy-index-tools-leaderboard-6cd03a75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i7eEhEhLWjncs7OV-oouz

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 p0-agent-economy-index-tools-leaderboard-6cd03a75
```

Example prompt: Show me the top 25 tool services in the x402 agent economy right now, ranked by number of paying wallets over the last 30 days, so I can pick the most actively used ones for my agent to call.

## When to prefer this

Choose this endpoint when you need a ranked, data-driven leaderboard of x402 tool services based on real 30-day payment and usage signals — not self-reported figures. Prefer it over generic API directories when you want to identify which tool APIs are actually being called and paid for by agents in the live market, especially on Base/EVM networks. It is particularly useful for agent bootstrapping, competitive analysis, or dynamic tool selection based on market activity.

## Known failure modes

- Payment not included or invalid USDC payment: 402 response blocking access
- No tool services indexed yet: returns empty services array with count 0
- Invalid query parameters: may return all results or an error depending on validation
- Snapshot unavailable: stale or missing generatedAt timestamp
- Network timeout from Cloudflare Worker: transient 5xx error

## 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 list of up to 25 (or specified limit) tool services from the x402 index, each with name, network, 30-day call count, price in USD, resource URL, and 30-day payer count. Also includes total matched service count, the query parameters used, the route, a declarant field, and a generatedAt timestamp with snapshot hash 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": "tools"
   }
  },
  "route": "/in-tools",
  "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/p0-agent-economy-index-tools-leaderboard-6cd03a75/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)