# SYNTHORA Top Crypto Market Data

> SYNTHORA Top Crypto Market Data is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Returns the top N cryptocurrencies ranked by market cap, including price, 24h change, volume, and market cap in USD, sourced from CoinGecko.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/top-crypto
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-top-crypto-market-data-64a43854
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YRIC4xzNADp0gicAJWKdg

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 synthora-top-crypto-market-data-64a43854 -d '<json body>'
```

Example prompt: Give me the top 20 cryptocurrencies ranked by market cap right now, including their current price, 24-hour change, volume, and market cap.

## When to prefer this

Choose this endpoint when you need a quick, keyless, real-time snapshot of top cryptocurrency market data ranked by market cap. It is ideal for market overviews, dashboards, or agent workflows that require no authentication setup and need up to 50 coins with price, volume, and market cap in a single call. Prefer alternatives if you need historical data, specific coin details, or more than 50 coins.

## Known failure modes

- limit exceeds 50 — request rejected or capped
- CoinGecko upstream API unavailable — stale or empty response
- Invalid limit type (non-integer) — validation error
- Rate limiting from underlying CoinGecko free tier — temporary failure or timeout

## How this service works

SYNTHORA top-crypto: Top N cryptocurrencies by market cap (default 10, max 50): rank, price, 24h change, volume and market cap in USD. Source: CoinGecko free API, keyless, timestamped.

## Output

A timestamped, ranked list of the top N cryptocurrencies (up to 50) with each coin's rank, current price in USD, 24-hour percentage price change, 24-hour trading volume in USD, and total market capitalization in USD. Data is sourced in real-time from the CoinGecko free API.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "description": "top N, default 10, max 50"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-top-crypto-market-data-64a43854/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)