# x402 Bazaar Rank – In-Soil Nitrogen Services

> x402 Bazaar Rank – In-Soil Nitrogen 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 2026-10-23).

Returns a ranked list of live x402 soil-nitrogen API services, scored by 30-day call volume and unique paying wallets, with a verifiable snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-soil-nitrogen?utm_source=zero.xyz
- Price: $0.008/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-in-soil-nitrogen-services-3eb8fb63
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EkSeW4gUayyIcV1hdekFz

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-soil-nitrogen-services-3eb8fb63
```

Example prompt: Show me the top soil nitrogen data services on x402 right now — ranked by how many unique paying wallets used them in the last 30 days, with their prices and usage stats.

## When to prefer this

Choose this endpoint when you specifically need ranked discovery of soil-nitrogen data APIs available on the x402 pay-per-call marketplace, with real usage signals (30-day calls and unique paying wallets) rather than self-reported popularity. It is preferable over generic API directories when you need cryptographically verifiable snapshot receipts for audit trails, or when you are building an agricultural agent that needs to select or switch between soil data providers dynamically based on actual market activity.

## Known failure modes

- No services found matching the soil-nitrogen tag — returns empty services array with count 0
- Snapshot index stale or unavailable — returns error or outdated generatedAt timestamp
- Invalid query parameters — may return 400 or malformed response
- Network timeout on Cloudflare Worker — transient 503 or connection error
- Price payment of $0.008 USDC rejected or wallet insufficient — 402 Payment Required blocks response

## 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 array of up to N live x402 services tagged 'soil-nitrogen', each with name, blockchain network, 30-day call count, price in USD, resource URL, and unique paying wallets. Also includes the total matched count, the query parameters used, a 'declaredBy' field, and a 'generatedAt' ISO timestamp plus a 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": "soil-nitrogen"
   }
  },
  "route": "/in-soil-nitrogen",
  "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-soil-nitrogen-services-3eb8fb63/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)