# Crypto ETF Sentinel — SEC Comment-Letter History for CIK 0001980994

> Crypto ETF Sentinel — SEC Comment-Letter History for CIK 0001980994 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 full chronological SEC ↔ issuer comment-letter history (UPLOAD/CORRESP pairs) for a specific crypto ETF issuer (CIK 0001980994), with review-intensity classification to gauge approval proximity.

## Facts

- Endpoint: GET https://api.cryptoetfsentinel.com/v1/issuers/0001980994/comment-letters
- 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-b956557b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5z50YmotO12diQW76OJOl

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-b956557b
```

Example prompt: Pull up the full SEC comment-letter history for crypto ETF issuer CIK 0001980994 — I want to see all the UPLOAD and CORRESP pairs in order and how intense the review has been so I can gauge how close they are to approval.

## When to prefer this

Use this endpoint when you need granular, issuer-specific SEC comment-letter cadence data for CIK 0001980994 specifically, particularly to assess review intensity and approval proximity. Prefer this over the general activity feed when you need complete historical correspondence rather than a recent snapshot, or when building approval-probability models for this specific filer.

## Known failure modes

- CIK not found or has no comment letters on record — returns empty array or 404
- SEC EDGAR data lag — recent letters may not yet be indexed
- Payment failure via x402 protocol — 402 response if USDC payment not attached
- Rate limiting if called excessively in short window
- Issuer may have transitioned to trading stage with no pending approval letters

## How this service works

Full SEC ↔ issuer comment-letter history for one CIK. Returns UPLOAD/CORRESP pairs in chronological order with review-intensity classification. Comment-letter cadence is a leading indicator of how close an issuer is to approval.

## Output

A chronological list of UPLOAD/CORRESP comment-letter pairs exchanged between the SEC and the issuer identified by CIK 0001980994, each annotated with a review-intensity classification. The data acts as a leading indicator of how close the issuer is to receiving SEC approval for their spot crypto ETF.

## 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-b956557b/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)