# claw402 CoinMarketCap Cryptocurrency Listings via x402

> claw402 CoinMarketCap Cryptocurrency Listings via x402 is a paid API for AI agents from claw402.ai, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-15).

Fetches paginated cryptocurrency market listings from CoinMarketCap, including price, market cap, volume, and ranking data, paid per-call with USDC via x402 protocol

## Facts

- Endpoint: GET https://claw402.ai/api/v1/crypto/cmc/listings
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/claw402-coinmarketcap-cryptocurrency-listings-via-x402-dee46880
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m7OsJbp0O--ftM_MSFWUt

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 claw402-coinmarketcap-cryptocurrency-listings-via-x402-dee46880
```

Example prompt: Show me the top 20 cryptocurrencies by market cap, converted to USD, including only coins (not tokens), sorted descending — I want price, volume, and 24h percent change.

## When to prefer this

Use this endpoint when you need real-time cryptocurrency market listings with rich filtering (price, market cap, volume, supply, percent change ranges) and want to pay per-call with USDC without managing API keys or subscriptions. Prefer over direct CMC API when you have a crypto wallet and want frictionless, keyless access.

## Known failure modes

- Payment not received or insufficient USDC — returns 402 Payment Required
- Invalid query parameter values (e.g. non-numeric price range) — returns 400 Bad Request
- CoinMarketCap upstream outage — may return 502 or empty data array
- Exceeding rate limits or unsupported parameter combinations — returns error code in JSON body
- No results matching filter criteria — returns empty data array with code 0

## How this service works

Backed by vergex.trade. Pay for any API with USDC. No API keys. No registration. Just a wallet.

## Output

A JSON object with a status code and a data array containing cryptocurrency listings matching the query filters, each entry including name, symbol, rank, price, market cap, 24h volume, circulating supply, and percent changes in the requested conversion currency.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "aux": {
       "type": "string"
      },
      "tag": {
       "type": "string"
      },
      "sort": {
       "type": "string"
      },
      "limit": {
       "type": "string"
      },
      "start": {
       "type": "string"
      },
      "convert": {
       "type": "string"
      },
      "sort_dir": {
       "type": "string"
      },
      "price_max": {
       "type": "string"
      },
      "price_min": {
       "type": "string"
      },
      "convert_id": {
       "type": "string"
      },
      "market_cap_max": {
       "type": "string"
      },
      "market_cap_min": {
       "type": "string"
      },
      "volume_24h_max": {
       "type": "string"
      },
      "volume_24h_min": {
       "type": "string"
      },
      "cryptocurrency_type": {
       "type": "string"
      },
      "circulating_supply_max": {
       "type": "string"
      },
      "circulating_supply_min": {
       "type": "string"
      },
      "percent_change_24h_max": {
       "type": "string"
      },
      "percent_change_24h_min": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "code": 0,
  "data": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/claw402-coinmarketcap-cryptocurrency-listings-via-x402-dee46880/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from claw402.ai](https://www.zero.xyz/host/claw402.ai/llms.txt)