# Whaletape x402 Merchant Settlement Ranking

> Whaletape x402 Merchant Settlement Ranking is a paid API for AI agents from whaletape.xyz, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Returns a ranked list of x402 merchants ordered by their on-chain settlement rate over the last 30 days

## Facts

- Endpoint: GET https://whaletape.xyz/index/ranking
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/whaletape-x402-merchant-settlement-ranking-4065da67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1il5x6LV_dREVIx0R3c29

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 whaletape-x402-merchant-settlement-ranking-4065da67
```

Example prompt: Show me the x402 merchants ranked by their actual on-chain settlement rate over the last 30 days — I want to know which paid endpoints are reliably settling, not just staying online.

## When to prefer this

Use this endpoint when you need to evaluate x402 merchant trustworthiness based on actual on-chain settlement behavior rather than self-reported uptime. Prefer this over general API health checks when your agent needs to select or audit x402 payment endpoints based on settlement reliability.

## Known failure modes

- No data if measurement cycle hasn't completed
- Stale rankings if on-chain data indexing is delayed
- Empty list if no x402 merchants have been measured yet
- HTTP 402 if payment of $0.03 USDC is not included in request
- Ranking may not reflect real-time settlement status

## How this service works

x402 merchants ranked by measured settlement rate over the last 30 days: how often a paid request actually produced an on-chain settlement, not how often the endpoint was up

## Output

An ordered list of x402 merchants ranked by their measured on-chain settlement rate over the trailing 30-day period, showing how reliably each merchant's paid endpoints actually result in confirmed blockchain settlements rather than just uptime metrics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ranking": [
   {
    "merchant": "apexrunner.ai",
    "networks": [
     "base"
    ],
    "measurements": 3,
    "not_assessable": 0,
    "liquidation_rate": 1
   },
   {
    "merchant": "api.hergertsynthora.com",
    "networks": [
     "base"
    ],
    "measurements": 5,
    "not_assessable": 0,
    "liquidation_rate": 1
   },
   {
    "merchant": "api.oblique.markets",
    "networks": [
     "base"
    ],
    "measurements": 3,
    "not_assessable": 2,
    "liquidation_rate": 1
   },
   {
    "merchant": "api.onesource.io",
    "networks": [
     "base"
    ],
    "measurements": 3,
    "not_assessable": 2,
    "liquidation_rate": 1
   },
   {
    "merchant": "api.syraa.fun",
    "networks": [
     "algorand-mainnet"
    ],
    "measurements": 6,
    "not_assessable": 0,
    "liquidation_rate": 1
   },
   {
    "merchant": "api.loyalspark.online",
    "networks": [
     "base"
    ],
    "measurements": 5,
    "not_assessable": 0,
    "liquidation_rate": 0
   },
   {
    "merchant": "api.xfuel.app",
    "networks": [
     "base"
    ],
    "measurements": 1,
    "not_assessable": 1,
    "liquidation_rate": 0
   },
   {
    "merchant": "hypernatt.com",
    "networks": [
     "base"
    ],
    "measurements": 1,
    "not_assessable": 1,
    "liquidation_rate": 0
   },
   {
    "merchant": "api.x402node.dev",
    "networks": [
     "algorand-mainnet"
    ],
    "measurements": 0,
    "not_assessable": 1,
    "liquidation_rate": null
   }
  ],
  "excludes": [
   "whaletape.xyz"
  ],
  "measured": true,
  "opted_out": [],
  "window_days": 30,
  "measured_networks": [
   "algorand-mainnet",
   "base"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/whaletape-x402-merchant-settlement-ranking-4065da67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whaletape.xyz](https://www.zero.xyz/host/whaletape.xyz/llms.txt)