# DKIM TXT DNS Record Lookup for Domain

> DKIM TXT DNS Record Lookup for Domain is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Fetches the TXT record at the DKIM public key DNS name (dkim._domainkey.{hostname}) for a given hostname

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-txt-dkim-dkim?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dkim-txt-dns-record-lookup-for-domain-29696f85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ocgW7UP9KvYeszGndS39y

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 dkim-txt-dns-record-lookup-for-domain-29696f85 -d '<json body>'
```

Example prompt: Look up the DKIM TXT record in DNS for the domain example.com — I need the public key data published at dkim._domainkey.example.com.

## When to prefer this

Use this endpoint when an agent needs to programmatically retrieve the DKIM public key DNS record for a specific hostname without performing LLM inference or additional network calls beyond the DNS lookup itself. Prefer the sandbox endpoint (POST /v1/sandbox/dns-txt-dkim-dkim) for testing before committing to the paid live endpoint. Useful for email deliverability checks, DKIM setup verification, and domain authentication audits.

## Known failure modes

- Domain does not have a DKIM TXT record published — returns empty or not-found response
- Invalid or malformed hostname input — returns validation error
- DNS resolution failure or timeout — returns network error
- Hostname exceeds 253 characters — rejected by schema validation
- Payment failure (x402) — call not executed

## How this service works

Call when an agent needs TXT at dkim._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-dkim first.

## Output

Returns the TXT record content found at dkim._domainkey.{hostname} in DNS, typically containing the DKIM public key and policy fields (e.g. v=DKIM1; k=rsa; p=...). If no record exists, an error or empty result is returned.

## 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/dkim-txt-dns-record-lookup-for-domain-29696f85/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)