# santyvv-data: Top Coins by Market Cap

> santyvv-data: Top Coins by Market Cap is a paid API for AI agents from santyvv-x402.santyvv1993.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Returns a full cryptocurrency market table showing top coins ranked by market capitalization

## Facts

- Endpoint: GET https://santyvv-x402.santyvv1993.workers.dev/api/crypto/markets?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/santyvv-data-top-coins-by-market-cap-289be697
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KywvKodLRpeF7GToqKg_8

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 santyvv-data-top-coins-by-market-cap-289be697
```

Example prompt: Pull up the full crypto market table showing all top coins ranked by market cap so I can see prices, volumes, and 24-hour changes across the board.

## When to prefer this

Use this endpoint when you need a broad, ranked snapshot of the entire crypto market sorted by market cap — ideal for dashboards, portfolio tools, market overviews, or any scenario where you need multiple coins' data in a single call rather than querying individual coins one by one.

## Known failure modes

- Upstream CoinGecko rate limiting may cause empty or stale responses
- Network timeout from the Cloudflare Worker if upstream is slow
- Payment failure if USDC balance is insufficient for the $0.01 per-call fee
- Missing or malformed response if the upstream market data provider is temporarily unavailable

## How this service works

Top coins by market cap (full market table)

## Output

A structured table of top cryptocurrencies ranked by market capitalization, including fields such as coin name, symbol, current price, market cap, 24-hour price change percentage, trading volume, and rank position.

## 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": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/santyvv-data-top-coins-by-market-cap-289be697/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from santyvv-x402.santyvv1993.workers.dev](https://www.zero.xyz/host/santyvv-x402.santyvv1993.workers.dev/llms.txt)