# Crypto ETF Sentinel — Issuer Profile Evolution History

> Crypto ETF Sentinel — Issuer Profile Evolution History is a paid API for AI agents from api.cryptoetfsentinel.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Returns a chronological history of profile changes (custodian, fee, authorized participants, in-kind redemption deltas) for a single crypto ETF issuer, derived from successive POS AM SEC filings.

## Facts

- Endpoint: GET https://api.cryptoetfsentinel.com/v1/profiles/0001980994/history
- 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/api-cryptoetfsentinel-com-5e733322
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aPBgP_4ImdSVVKdkn5P4o

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-5e733322
```

Example prompt: Show me the full profile evolution history for the crypto ETF issuer with CIK 0001980994 — I want to see every change to their custodian, fees, authorized participants, and in-kind redemption terms across all their POS AM filings over time.

## When to prefer this

Use this endpoint when you need to audit or track how a specific crypto ETF issuer has changed their fund structure over time via POS AM amendments — especially for due diligence on custodian switches, fee reductions, AP roster changes, or in-kind policy shifts. Prefer this over the bulk profiles endpoint when you need longitudinal/temporal detail for one issuer rather than a current snapshot across all issuers.

## Known failure modes

- CIK not found or not a crypto ETF issuer — returns empty or 404
- Issuer has no POS AM filing history yet — returns empty array
- SEC EDGAR source temporarily unavailable — may return stale or error response
- Invalid CIK format — schema validation error
- Payment not processed (x402) — 402 Payment Required response

## How this service works

Chronological profile evolution for one issuer — custodian/fee/AP/in-kind deltas over time, derived from successive POS AM filings.

## Output

An ordered list of profile snapshots for the issuer, each snapshot corresponding to a POS AM filing, showing the delta or current state of key structural fields: custodian, management fee, authorized participants (APs), and in-kind redemption eligibility — allowing comparison of how the issuer's ETF structure has evolved filing by filing.

## 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-5e733322/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)