# DNS SRV Autodiscover Lookup

> DNS SRV Autodiscover Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Looks up SRV records at _autodiscover._tcp.{hostname} for email Autodiscover service discovery, given a registrable domain name.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-autodiscover?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-srv-autodiscover-lookup-239d7bde
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Mt_V2gYbCBc3xnWv-EB4R

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-srv-autodiscover-lookup-239d7bde -d '<json body>'
```

Example prompt: Can you look up the Autodiscover SRV DNS record for contoso.com so I can find out which server handles email configuration for that domain?

## When to prefer this

Use this endpoint when an agent specifically needs to resolve _autodiscover._tcp SRV DNS records for email client configuration or Exchange/Office 365 service discovery. Prefer the free sandbox POST /v1/sandbox/dns-srv-autodiscover endpoint first if available; use this paid endpoint ($0.01 USDC) only when the sandbox is unavailable or production accuracy is required.

## Known failure modes

- No SRV record found for the domain — returns empty or not-found result
- Invalid or malformed hostname input — validation error
- DNS resolution timeout or network error during lookup
- Domain does not exist — NXDOMAIN response

## How this service works

Call when an agent needs SRV records at _autodiscover._tcp.{hostname} for Autodiscover. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-autodiscover first.

## Output

Returns the SRV record details found at _autodiscover._tcp.{hostname}, including priority, weight, port, and the target hostname of the Autodiscover service, or an indication that no record exists.

## 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-srv-autodiscover-lookup-239d7bde/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)