# Crypto ETF Sentinel – Latest POS AM Profile for Single Issuer

> Crypto ETF Sentinel – Latest POS AM Profile for Single Issuer is a paid API for AI agents from api.cryptoetfsentinel.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns the most recent POS AM-extracted ETF profile for a single issuer, including custodian, sponsor fee, authorized participant list, in-kind eligibility, and basket size.

## Facts

- Endpoint: GET https://api.cryptoetfsentinel.com/v1/profiles/0001980994/latest
- Price: $0.02/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-03f6687b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2kkMKhR13mgswfX93QgnD

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-03f6687b
```

Example prompt: Pull up the latest POS AM profile for the spot crypto ETF issuer with CIK 0001980994 — I need to see the custodian, sponsor fee, authorized participants, in-kind eligibility, and basket size.

## When to prefer this

Use this endpoint when you need structured, machine-readable POS AM data for a specific US spot crypto ETF issuer identified by CIK, particularly when you need the current custodian, fee structure, AP list, and in-kind eligibility in a single call rather than parsing raw SEC filings yourself.

## Known failure modes

- CIK not found or not a trading US spot crypto ETF issuer — 404 response
- POS AM filing not yet available for the issuer — empty or null profile returned
- Payment not included or invalid — 402 Payment Required response
- Rate limit exceeded — 429 response
- Upstream SEC data unavailable or stale — partial or outdated profile returned

## How this service works

Latest POS AM-extracted profile for one issuer: custodian, sponsor fee, AP list, in-kind eligibility, basket size.

## Output

A structured JSON object containing the most recent POS AM-extracted profile for the specified issuer, including the ETF custodian name, sponsor fee (expense ratio), list of authorized participants, whether in-kind creation/redemption is permitted, and the basket size.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-cryptoetfsentinel-com-03f6687b/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)