# Financial Data x402 – Crypto Market Overview

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

Returns a real-time global cryptocurrency market snapshot including total market cap, 24h volume, BTC/ETH dominance, and active coin count, paid per-call via x402/USDC.

## Facts

- Endpoint: GET https://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/financial-data-x402-crypto-market-overview-dfd371e9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f6iYxdsT9DmIjToKmSk_X

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 financial-data-x402-crypto-market-overview-dfd371e9
```

Example prompt: Give me a real-time global crypto market overview — total market cap, 24-hour volume, how much Bitcoin and Ethereum dominate, and how many active coins there are right now.

## When to prefer this

Choose this endpoint when you need a fast, no-subscription, pay-per-call global crypto market overview without managing API keys. It is ideal for agents that need occasional or infrequent market snapshots (cost-efficient at $0.005/call), and for workflows that operate on Base or Solana USDC. Prefer this over subscription-based data APIs when call volume is low or unpredictable.

## Known failure modes

- Payment not included or insufficient USDC — returns HTTP 402 Payment Required
- Network/USDC payment settlement failure — call must be retried with valid x402 payment header
- Upstream data provider unavailable — may return 503 or stale/empty data
- Malformed request — returns 400 if required headers are missing

## How this service works

Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.

## Output

A JSON object containing: as_of (ISO 8601 timestamp), total_market_cap_usd (global crypto market cap in USD), total_volume_24h_usd (24-hour trading volume in USD), dominance_pct object with BTC/ETH/USDT percentage shares, active_cryptocurrencies (count of active coins), markets (number of markets tracked), and market_cap_change_pct_24h (percentage change in market cap over the last 24 hours).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-08-09T12:00:00Z",
  "markets": 1505,
  "dominance_pct": {
   "BTC": 56.6544,
   "ETH": 10.0472,
   "USDT": 7.9355
  },
  "total_market_cap_usd": 2307253683612.41,
  "total_volume_24h_usd": 32340223811.31,
  "active_cryptocurrencies": 18284,
  "market_cap_change_pct_24h": 0.1532
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/financial-data-x402-crypto-market-overview-dfd371e9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402financialdata.com](https://www.zero.xyz/host/x402financialdata.com/llms.txt)