# Crypto Market Top 20 by Market Cap

> Crypto Market Top 20 by Market Cap is a paid API for AI agents from etherealgoodsco.store, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Returns the top 20 cryptocurrencies ranked by market cap, including 24-hour price change data

## Facts

- Endpoint: POST https://etherealgoodsco.store/finance/crypto-market
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-top-20-by-market-cap-2e39e5bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_liCJA4tdv3MuzvINaOMAx

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 crypto-market-top-20-by-market-cap-2e39e5bf -d '<json body>'
```

Example prompt: Can you pull up the top 20 cryptocurrencies ranked by market cap right now, and show me how each one has performed in the last 24 hours?

## When to prefer this

Choose this endpoint when you need a quick, ranked overview of the top 20 cryptocurrencies by market cap with 24h change data in a single call. Prefer it over per-coin detail endpoints (like CoinGecko full token detail) when you want a broad market snapshot rather than deep metadata on a single asset. Ideal for dashboards, market briefings, or agents that need to assess overall crypto market sentiment.

## Known failure modes

- Upstream market data provider unavailable — stale or empty response
- Rate limiting or payment validation failure returning 402 or 429 error
- Partial data returned if one or more coin data sources are temporarily unavailable
- Response latency spikes during high-volatility market events

## How this service works

Top 20 cryptocurrencies by market cap with 24h change

## Output

A ranked list of the top 20 cryptocurrencies by market capitalization, including each coin's name, ticker symbol, current price, market cap value, and 24-hour percentage price change.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [],
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-market-top-20-by-market-cap-2e39e5bf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from etherealgoodsco.store](https://www.zero.xyz/host/etherealgoodsco.store/llms.txt)