# Crypto ETF Sentinel XBRL Leaderboard

> Crypto ETF Sentinel XBRL Leaderboard is a paid API for AI agents from api.cryptoetfsentinel.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Returns a ranked list of top-N US spot crypto ETF issuers ordered by an XBRL TIER1 financial concept such as AUM in USD, using daily-updated regulatory data.

## Facts

- Endpoint: GET https://api.cryptoetfsentinel.com/v1/xbrl/leaderboard
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-cryptoetfsentinel-com-550428b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Yqj1JbKe_Hln58aEUCUWk

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 api-cryptoetfsentinel-com-550428b6
```

Example prompt: Show me the top 10 US spot crypto ETF issuers ranked by AUM using the latest XBRL data from Crypto ETF Sentinel.

## When to prefer this

Use this endpoint when you need a ranked comparative view of US spot crypto ETF issuers by a standardized financial metric (especially AUM). Prefer this over single-issuer endpoints when the goal is cohort-level comparison, market share analysis, or identifying the dominant players. Best suited for daily snapshots rather than intraday monitoring.

## Known failure modes

- No XBRL data available for some issuers — those entries may be absent or show null values
- Invalid XBRL concept name returns an error or empty dataset
- Payment of 0.1 USDC not received — 402 response blocking access
- Rate limiting or upstream SEC data lag causing stale results
- N value out of range returns validation error

## How this service works

Crypto ETF Sentinel — Crypto ETF AUM leaderboard: top-N US spot crypto ETF issuers ranked by assets under management or another XBRL TIER1 concept, from daily-updated XBRL facts. Use when you need the largest Bitcoin, Ethereum and other crypto ETFs by fund size. Optional concept, unit, taxonomy and limit params.

## Output

A ranked list of US spot crypto ETF issuers ordered by the specified XBRL TIER1 financial concept (defaulting to AUM in USD), with daily-updated values for each issuer including their relative fund size within the cohort. Includes pagination metadata (total, limit, offset).

## Example request

```json
{
 "properties": "AUM"
}
```

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [
   {
    "cik": "0001980994",
    "name": "iShares Bitcoin Trust",
    "value": 56240000000,
    "ticker": "IBIT",
    "concept": "NetAssetsUSD",
    "period_end": "2026-03-31"
   }
  ],
  "meta": {
   "total": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-cryptoetfsentinel-com-550428b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cryptoetfsentinel.com](https://www.zero.xyz/host/api.cryptoetfsentinel.com/llms.txt)