# P0 Agent Economy Index – ENS-tagged x402 Service Discovery

> P0 Agent Economy Index – ENS-tagged x402 Service Discovery is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.032/call, status unknown (last checked 2026-10-30).

Returns ranked x402 services filtered by ENS tag, scored by real 30-day call volume and paying-wallet counts, with a snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-ens?utm_source=zero.xyz
- Price: $0.032/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/p0-agent-economy-index-ens-tagged-x402-service-discovery-5826aff7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_olqk2cRYCudWtv04U01BV

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-ens-tagged-x402-service-discovery-5826aff7
```

Example prompt: Show me the top 25 ENS-tagged x402 services ranked by number of paying wallets over the last 30 days, with their call counts and prices.

## When to prefer this

Choose this endpoint when you specifically need to discover x402 services that are ENS-tagged, ranked by real economic activity (payer counts or call volume) rather than self-declared metadata. Prefer it over generic API directories when you need cryptographically receipted snapshots of the live agent economy, or when you want to filter the x402 bazaar specifically by ENS namespace with verifiable 30-day usage signals.

## Known failure modes

- Invalid or unrecognized tag parameter returns empty results or 400 error
- Network unavailability of the worker returns 503
- Stale snapshot if the index has not refreshed within its window
- Limit exceeding maximum allowed count may return truncated or error response
- No ENS-tagged services in index returns count of 0 with empty services array

## 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 x402 services filtered by ENS tag, each entry including service name, network (e.g. eip155:8453), 30-day call count, price in USD, resource URL, and 30-day unique payer count. Also includes total matched count, query metadata (ranking operator, limit, filter), the declaring entity type, 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": "ens"
   }
  },
  "route": "/in-ens",
  "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-ens-tagged-x402-service-discovery-5826aff7/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)