# x402 Bazaar Rank – Derivatives Deep

> x402 Bazaar Rank – Derivatives Deep is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.016/call, status unknown (last checked 2026-10-23).

Returns a ranked list of the top derivatives-tagged x402 services, scored by real 30-day call volume and paying-wallet counts, with a verifiable snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-derivatives-deep?utm_source=zero.xyz
- Price: $0.016/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-derivatives-deep-b83ec269
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7KGVRr9zaOTx41WttM6Pt

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-derivatives-deep-b83ec269
```

Example prompt: Show me the top 100 derivatives-tagged x402 services ranked by paying wallets over the last 30 days, including their call counts and prices.

## When to prefer this

Use this endpoint when you need ranked, verifiable discovery of x402 services specifically tagged as derivatives, with real 30-day usage signals (calls and paying wallets) rather than self-reported metadata. Prefer it over generic x402 directory endpoints when you care about derivatives specifically and need a cryptographically receipted snapshot for auditing or agent decision-making.

## Known failure modes

- No derivatives-tagged services indexed yet — returns empty services array with count 0
- Snapshot data stale if indexer has not run recently — generatedAt timestamp will reveal lag
- Payment not sent or invalid — 402 response blocking access
- Malformed query parameters — may return unexpected or unfiltered results
- Worker cold-start latency on first request

## How this service works

Deep view: top 100 x402 services tagged 'derivatives': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 49 providers and 135 paying wallets measured in this tag.

## Output

A JSON object containing a ranked array of derivatives-tagged x402 services, each with name, network, 30-day call count, price in USD, resource URL, and 30-day payer wallet count. Also includes the query parameters used, total matched count, the route, who declared the data, 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": 100,
   "where": {
    "tag": "derivatives"
   }
  },
  "route": "/in-derivatives-deep",
  "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-derivatives-deep-b83ec269/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)