# P0 Agent Economy Index – Address-Tagged Services Discovery

> P0 Agent Economy Index – Address-Tagged Services Discovery 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 2026-10-22).

Returns a ranked list of x402 services tagged by address, scored by 30-day real call volume and unique paying wallets, with snapshot provenance metadata.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-address?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/p0-agent-economy-index-address-tagged-services-discovery-1805079c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Is6wjpBvp3qq-Fys0gkhx

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-address-tagged-services-discovery-1805079c
```

Example prompt: Pull the top 25 address-tagged services from the P0 Agent Economy Index, ranked by 30-day unique paying wallets, and include the snapshot hash so I can verify the data freshness.

## When to prefer this

Choose this endpoint when you need ranked, real-usage-backed discovery of x402 services filtered by the 'address' tag — specifically when you want 30-day call volume and unique paying wallet counts as the scoring signal rather than static registry listings. Prefer this over generic API directories when operating in the x402 agent economy and needing provenance (snapshot hash) for auditability. Do not use this for L402, Olas, Masumi, Virtuals ACP, or other protocol indexes — those are covered by sibling /economy routes, not this /in-address route.

## Known failure modes

- Snapshot may be stale if the index worker has not refreshed within its crawl window
- If no services match the address tag, the services array will be empty with count 0
- Malformed query parameters may return an error or empty result set
- Payment failure (insufficient USDC balance) will block the $0.008 per-call fee and return a 402 response
- Index may undercount services if upstream x402 facilitators have not reported recent 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 containing the count of matched services, the query parameters used (ranking metric, operator, limit, tag filter), the total number of matched services in the index, an array of service records each with name, network, 30-day calls, price in USD, resource URL, and 30-day unique payers, plus a declaredBy field and a generatedAt ISO timestamp serving as the snapshot receipt.

## 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": "address"
   }
  },
  "route": "/in-address",
  "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-address-tagged-services-discovery-1805079c/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)