# Crypto Market Overview

> Crypto Market Overview is a paid API for AI agents from www.x402financialdata.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Returns a global crypto market snapshot including total market cap, 24h trading volume, 24h market-cap % change, BTC/ETH dominance, and active coin/market counts in a single call.

## Facts

- Endpoint: GET https://www.x402financialdata.com/crypto-market-overview
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-overview-30fd2391
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rnQRuQ_S7vn8QhcRKBW2s

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-overview-30fd2391
```

Example prompt: Give me a full snapshot of the global crypto market right now — total market cap, 24h trading volume, how much the market cap has changed in the last 24 hours, and Bitcoin and Ethereum dominance percentages.

## When to prefer this

Use this endpoint when you need whole-market crypto context rather than data on a specific coin. It is ideal for market briefings, framing individual coin moves against broader market trends, monitoring BTC/ETH dominance shifts, or building dashboards that require a single-call global snapshot. Prefer this over coin-specific endpoints when the user's question is about the market as a whole rather than any individual asset.

## Known failure modes

- CoinGecko upstream outage may return 5xx error or stale data
- Payment failure (insufficient USDC balance) returns 402 Payment Required
- Rate limiting may result in 429 responses during high-demand periods
- Network timeout if upstream CoinGecko API is slow to respond

## How this service works

Global crypto market snapshot in one call: total market cap, 24h trading volume, 24h market-cap % change, BTC/ETH dominance, and active-coin/market counts -- the whole-market context behind any single coin's move. Not ticker-specific. From CoinGecko. $0.005/call.

## Output

Returns a structured JSON object with global crypto market metrics: total market capitalization, 24-hour trading volume, 24-hour market cap percentage change, Bitcoin dominance percentage, Ethereum dominance percentage, and counts of active coins and trading markets — all sourced from CoinGecko.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "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-overview-30fd2391/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.x402financialdata.com](https://www.zero.xyz/host/www.x402financialdata.com/llms.txt)