# Delx CAA Issue Hosts Extractor

> Delx CAA Issue Hosts Extractor is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-17).

Parses a list of CAA DNS record strings and extracts the authorized certificate authority hostnames from them.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/caa-issue-hosts?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-caa-issue-hosts-extractor-107aa78c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HDqczMYHLLWSat2WmxvUs

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 delx-caa-issue-hosts-extractor-107aa78c -d '<json body>'
```

Example prompt: Parse these CAA DNS record strings and tell me which certificate authority hostnames are authorized to issue certs: ["0 issue \"letsencrypt.org\"", "0 issue \"pki.goog\""]

## When to prefer this

Use this endpoint when you need to programmatically extract certificate authority hostnames from raw CAA DNS record strings — particularly in infrastructure automation, security auditing, or certificate lifecycle management workflows where parsing CAA records manually would be error-prone.

## Known failure modes

- Malformed CAA record strings may yield empty or partial hosts array
- Records without an 'issue' or 'issuewild' tag may produce no hosts
- Non-array or missing 'records' field causes request validation failure
- Records with semicolons or non-standard formatting may be included literally in the output

## How this service works

Extract issue/issuewild hosts from CAA record texts. Call when inventorying allowed CAs from CAA answers. Returns hosts list as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

## Output

Returns a JSON object containing a 'hosts' array of certificate authority hostnames parsed from the input CAA record strings (e.g. ['letsencrypt.org', 'pki.goog']), plus a schema identifier string.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "records": {
   "type": "array",
   "description": "List of CAA record strings"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hosts": [
   "letsencrypt.org",
   ";"
  ],
  "schema": "delx/util-caa-issue-hosts/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-caa-issue-hosts-extractor-107aa78c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)