# x402 Trending Services Leaderboard

> x402 Trending Services Leaderboard is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-18).

Returns the most-used paid x402 API services from the public Bazaar catalog, ranked by real usage (unique payers and call volume in 30 days), with price, networks, and ecosystem totals — optionally filtered by keyword.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/x402-trending?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trending-services-leaderboard-5e7a07e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Mr4Ok8K5XBM7ckFgv3LXK

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-trending-services-leaderboard-5e7a07e1 -d '<json body>'
```

Example prompt: Show me the top 10 most-used paid x402 services from the Bazaar right now — the ones with the most unique payers and calls in the last 30 days — and filter results to anything related to 'token'.

## When to prefer this

Use this endpoint when you need to discover which x402-paid services are genuinely popular by real usage data rather than self-reported listings — particularly useful for agents deciding which APIs to integrate, researchers benchmarking ecosystem growth, or builders wanting to find the most in-demand paid capabilities in the x402 Bazaar. Prefer this over static catalogs or directory listings when recency and actual payment/call volume matter.

## Known failure modes

- Invalid body schema returns a 4xx validation error
- No results matching the search keyword returns an empty ranking array with matches:0
- Service temporarily unavailable returns a 5xx error
- Payment not settled (x402 protocol failure) results in no response body

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

A JSON object containing a ranked list of x402 services (resource URL, description, price in USDC, supported networks, 30-day call count, 30-day unique client count), plus ecosystem-level totals (services_in_bazaar, total_calls_30d, with_usage_30d), the data source label, and a timestamp for when the data was last updated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer"
  },
  "search": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "x402 Bazaar (Coinbase CDP, public catalog)",
  "matches": 24025,
  "ranking": [
   {
    "networks": [
     "eip155"
    ],
    "resource": "https://www.ax1.vc/api/dashboard/q-verdict/resource",
    "calls_30d": 299133,
    "price_usdc": 0.02,
    "clients_30d": 4625,
    "description": "Send a Base token contract address, get an AI-written verdict: onchain metrics, a plain-language take, and a shareable verdict card. Entertainment, not trading advice."
   },
   {
    "networks": [
     "eip155"
    ],
    "resource": "https://api.onesource.io/api/chain/erc20-balance",
    "calls_30d": 860,
    "price_usdc": 0.003,
    "clients_30d": 852,
    "description": "ERC20 token balance for any Ethereum wallet - USDC, USDT, DAI, or any token - via balanceOf (eth_call) on OneSource live Ethereum RPC"
   }
  ],
  "updated": "2026-10-02T20:20+00:00",
  "with_usage_30d": 23003,
  "total_calls_30d": 790350,
  "services_in_bazaar": 24025
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trending-services-leaderboard-5e7a07e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)