# P0 Agent Economy Index – Crypto-Dev Segment

> P0 Agent Economy Index – Crypto-Dev Segment 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 2026-10-21).

Returns a ranked list of the top x402 services tagged 'crypto-dev', scored by 30-day unique paying wallets, with call counts and pricing metadata.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-crypto-dev?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/p0-agent-economy-index-crypto-dev-segment-ab91f686
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JloUKpZLGizWHOXRSCkSN

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-crypto-dev-segment-ab91f686
```

Example prompt: Pull the top 25 crypto-dev x402 services right now, ranked by 30-day unique paying wallets, so I can see which agent-economy APIs are most in demand in the crypto-dev space.

## When to prefer this

Use this endpoint when you need a live, pay-per-call ranked discovery of x402 services specifically in the crypto-dev category, scored by real 30-day paying-wallet activity rather than self-reported metrics. Prefer it over generic API directories when you need machine-to-machine economy signals (payers, calls) with cryptographic provenance (snapshot hash, scoring revision). Not suitable if you need L402 listings, per-service MPP data, or economy statistics for other agent protocol registries like Olas or Masumi — those are covered by sibling /economy routes.

## Known failure modes

- No services currently indexed under the crypto-dev tag — returns empty services array
- Snapshot stale if index has not refreshed — check generatedAt timestamp
- Payment of 0.008 USDC not completed — endpoint returns 402 and does not serve data
- Malformed response if indexing pipeline is mid-refresh — retry recommended
- Network or worker timeout — transient Cloudflare Workers failure

## 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 x402 services in the crypto-dev tag, each with service name, network identifier, 30-day call count, USD price, resource URL, and 30-day unique paying wallet count. Also includes the total matched service count, query parameters used, the route, a declarant label, and a generation timestamp for provenance.

## 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": "crypto-dev"
   }
  },
  "route": "/in-crypto-dev",
  "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-crypto-dev-segment-ab91f686/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)