# x402 Bazaar Rank – In-Evidence Services

> x402 Bazaar Rank – In-Evidence Services 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 2026-09-18).

Returns a ranked list of x402 services filtered to the 'evidence' tag, scored by real 30-day call volume and paying-wallet counts, with a signed receipt containing snapshot hash and scoring revision.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-evidence
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-in-evidence-services-0e0ecf20
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M4RxTwVfewq9Vo8DmQeKO

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-in-evidence-services-0e0ecf20
```

Example prompt: Show me the top 25 x402 services tagged 'evidence', ranked by paying wallets over the last 30 days, with a signed receipt of the snapshot hash and scoring revision.

## When to prefer this

Choose this endpoint when you specifically need ranked discovery of x402 services in the 'evidence' tag category with cryptographically receipted snapshots. Prefer it over generic API directories when you need real 30-day usage signals (calls and paying wallets) rather than self-reported metadata, and when you need an auditable receipt tying the result to a specific scoring revision and snapshot hash. Most useful for agents that need to programmatically select or compare evidence-category x402 APIs based on proven market activity.

## Known failure modes

- No services match the evidence tag — returns empty services array with count 0
- Upstream indexer unavailable — may return 503 or stale snapshot
- Malformed response if snapshot hash generation fails
- Rate limiting or payment failure if USDC payment not included or rejected
- Snapshot may be minutes old if indexer hasn't refreshed within the polling window

## How this service works

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.

## Output

A JSON object containing a ranked array of x402 services matching the 'evidence' tag, each entry including name, network identifier, 30-day call count, price in USD, resource URL, and 30-day paying wallet count. Also includes query metadata (operator, limit, matched count), the route, a declarant field, a generatedAt ISO timestamp, and a receipt with snapshot hash and scoring revision 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": "evidence"
   }
  },
  "route": "/in-evidence",
  "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/x402-bazaar-rank-in-evidence-services-0e0ecf20/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)