# agent402.tools Crypto Global Market Snapshot

> agent402.tools Crypto Global Market Snapshot is a paid API for AI agents from agent402.tools, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Returns a global cryptocurrency market summary including total market cap, 24h volume, BTC/ETH dominance, active coin/exchange counts, and 24h market-cap change percentage in a chosen currency.

## Facts

- Endpoint: GET https://agent402.tools/api/crypto-global
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-tools-crypto-global-market-snapshot-550ce75a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-YCs7SL4EnkXdnZOzJBH8

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 agent402-tools-crypto-global-market-snapshot-550ce75a
```

Example prompt: What does the global crypto market look like right now — total market cap, Bitcoin and Ethereum dominance, 24-hour volume, and whether the market is up or down — show it to me in USD?

## When to prefer this

Use this endpoint when you need a high-level macro view of the entire cryptocurrency market in one call — total cap, dominance, and volume — rather than data on individual coins. Prefer over coin-specific endpoints when the user asks about the market overall, BTC/ETH dominance shifts, or aggregate market sentiment. Backed by CoinGecko, a well-established data provider.

## Known failure modes

- Invalid vs_currency value returns an error or falls back to USD
- CoinGecko upstream outage may cause 503 or stale data
- Rate limiting or payment failure (x402) results in 402 Payment Required

## How this service works

Global crypto market snapshot: total market cap, total 24h volume, BTC dominance, ETH dominance, active coin count, active exchange count, and 24h market-cap change %. Returned in a chosen vs_currency (default usd). Backed by CoinGecko /global.

## Output

Returns a JSON object with total cryptocurrency market capitalization, total 24h trading volume, BTC dominance %, ETH dominance %, number of active cryptocurrencies, number of active exchanges, and 24h market-cap change percentage — all denominated in the requested vs_currency (default USD). Data sourced from CoinGecko /global endpoint.

## 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": {
      "currency": {
       "type": "string",
       "description": "vs_currency for cap/volume (default: usd)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "markets": 952,
  "currency": "usd",
  "updatedAt": "2026-06-20T00:30:00Z",
  "totalMarketCap": 2410000000000,
  "totalVolume24h": 92000000000,
  "btcDominancePct": 54.8,
  "ethDominancePct": 17.6,
  "marketCapChange24hPct": 1.23,
  "activeCryptocurrencies": 12450
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-tools-crypto-global-market-snapshot-550ce75a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)