# DNS CAA Issue Record Lookup

> DNS CAA Issue Record Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-24).

Retrieves DNS CAA records with the 'issue' tag (not 'issuewild') for a given hostname

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-caa-issue?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-caa-issue-record-lookup-706a5491
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nLXPkdT_kSFFrVdHezv08

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 dns-caa-issue-record-lookup-706a5491 -d '<json body>'
```

Example prompt: Can you look up the CAA 'issue' DNS records for example.com and tell me which certificate authorities are authorized to issue SSL certificates for it?

## When to prefer this

Use this endpoint when you specifically need CAA records tagged 'issue' (standard cert issuance, not wildcard). Choose this over general DNS lookup tools when the agent workflow requires a paid, reliable, structured CAA-issue-only result. Use the free sandbox POST /v1/sandbox/dns-caa-issue first for testing before incurring the $0.003 USDC charge.

## Known failure modes

- Hostname not found or does not exist — empty or error response
- Hostname exceeds 253 characters — validation error
- No CAA records present for the hostname — empty result set
- DNS resolution timeout — service may return an error
- Malformed hostname input — request rejected

## How this service works

Call when an agent needs CAA records whose tag is issue, not issuewild. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/dns-caa-issue first.

## Output

Returns the CAA DNS records for the given hostname where the tag is 'issue', indicating which certificate authorities are explicitly authorized to issue standard (non-wildcard) certificates for the domain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "hostname": {
   "type": "string",
   "examples": [
    "example.com"
   ],
   "maxLength": 253,
   "minLength": 1,
   "description": "Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-caa-issue-record-lookup-706a5491/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)