# x402 Bazaar Rank – Dossier Tag Discovery

> x402 Bazaar Rank – Dossier Tag 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 2026-10-19).

Returns the top x402 services tagged 'dossier', ranked by 30-day paying wallet activity and call volume, with a signed snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-dossier?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-dossier-tag-discovery-f480383c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JH12wKWHQ3TgPbqOiNGmB

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-dossier-tag-discovery-f480383c
```

Example prompt: Show me the top 25 dossier-tagged services in the x402 marketplace right now, ranked by how many unique paying wallets used them in the last 30 days.

## When to prefer this

Use this endpoint when you specifically need to discover or evaluate x402 services tagged 'dossier', ranked by real on-chain usage signals (paying wallets and call counts) rather than self-reported metadata. Prefer it over generic API directories when you need verifiable demand data for the dossier segment of the x402 marketplace, or when you need an auditable snapshot receipt for the ranking.

## Known failure modes

- No services matched the dossier tag — returns empty list with count:0
- Snapshot data may be stale if the indexer has not refreshed recently
- Payment not confirmed — 402 response requiring USDC payment before data is returned
- Worker timeout if the index is large or under load
- Malformed response if the scoring revision changes schema unexpectedly

## 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 dossier-tagged x402 services, each with name, network chain ID, 30-day call count, 30-day unique payer wallet count, price in USD, and resource URL. Also includes total matched service count, query metadata, snapshot generatedAt timestamp, and a receipt naming the 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": "dossier"
   }
  },
  "route": "/in-dossier",
  "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-dossier-tag-discovery-f480383c/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)