# AgentShelf DKIM PIC TXT DNS Lookup

> AgentShelf DKIM PIC TXT DNS Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).

Fetches the DKIM PIC TXT record at pic._domainkey.{hostname} via live DNS resolution

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-txt-dkim-pic?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-dkim-pic-txt-dns-lookup-e04ade4c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FHGVn9x6s9GW0jlD5XXMc

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 agentshelf-dkim-pic-txt-dns-lookup-e04ade4c -d '<json body>'
```

Example prompt: Can you look up the DKIM PIC TXT record at pic._domainkey.example.com for me?

## When to prefer this

Use this endpoint when you specifically need the DKIM PIC selector TXT record (at pic._domainkey.{hostname}). It is purpose-built for this exact DNS path, so prefer it over generic DNS lookup tools when the selector is known to be 'pic'. Try the free sandbox endpoint (POST /v1/sandbox/dns-txt-dkim-pic) first before paying $0.003 USDC for this paid version.

## Known failure modes

- Hostname does not exist in DNS — NXDOMAIN error returned
- No TXT record at pic._domainkey.{hostname} — empty or not found response
- Hostname exceeds 253 characters or is empty — validation error
- Private or reserved hostnames rejected — SSRF-safe filtering may apply
- DNS resolution timeout — upstream DNS unavailable or slow
- Malformed hostname input — schema validation failure

## How this service works

Call when an agent needs TXT at pic._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-pic first.

## Output

The raw TXT record string published at pic._domainkey.{hostname} in DNS, typically containing the DKIM public key or certificate used for email authentication validation.

## 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/agentshelf-dkim-pic-txt-dns-lookup-e04ade4c/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)