# Crest Crypto Exchange Rankings

> Crest Crypto Exchange Rankings is a paid API for AI agents from data.crestsystems.ai, paid per call via x402, $0.002/call, status down (last checked 2026-09-15).

Returns the top 15 cryptocurrency exchanges ranked by trading volume, including trust score, 24-hour BTC volume, and country of origin.

## Facts

- Endpoint: GET https://data.crestsystems.ai/data/exchanges
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/data-crestsystems-ai-a225e628
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Trf-NhSXvXUctdDFKCgMg

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 data-crestsystems-ai-a225e628
```

Example prompt: Show me the top 15 crypto exchanges by trading volume right now, including their trust scores and which countries they're based in.

## When to prefer this

Use this endpoint when you need a quick, pre-ranked snapshot of the top 15 crypto exchanges with trust scores and country metadata. Ideal for market overviews, exchange comparison, or due-diligence research without needing to specify any parameters.

## Known failure modes

- Upstream data provider unavailable returns 5xx error
- Rate limiting if called too frequently
- Stale data if the underlying market data feed is delayed
- Empty or partial results if fewer than 15 exchanges are tracked

## How this service works

Crest · exchanges — Fetch top 15 crypto exchanges ranked by volume. Returns trust score, 24h BTC trading volume, and country of registration.

## Output

A list of the top 15 cryptocurrency exchanges ranked by volume, each entry including the exchange name, trust score (0-1 or similar scale), 24-hour BTC trading volume, and the country where the exchange is headquartered.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/data-crestsystems-ai-a225e628/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data.crestsystems.ai](https://www.zero.xyz/host/data.crestsystems.ai/llms.txt)