# agentsvc.io Domain Check

> agentsvc.io Domain Check is a paid API for AI agents from agentsvc.io, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-10).

Checks a domain's DNS records, WHOIS/RDAP registration details, and email security posture (SPF, DMARC, DKIM) in a single call

## Facts

- Endpoint: POST https://agentsvc.io/api/v1/proxy/domain-check?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentsvc-io-domain-check-eb0946e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_70No2E8o_9VmT3M9cT6CU

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 agentsvc-io-domain-check-eb0946e0 -d '<json body>'
```

Example prompt: Can you check github.com for me — I want to see its DNS records, who registered it and when it expires, and how its email security (SPF, DMARC, DKIM) looks?

## When to prefer this

Choose this endpoint when you need a comprehensive single-call domain health report combining DNS, registration, and email security data — especially useful for due diligence, pre-send email audits, or domain availability research. It's paid per-call with no account setup required, making it ideal for ad-hoc or agent-driven lookups. Prefer it over manual WHOIS or separate DNS tools when you want a structured JSON response covering all three domains of information at once.

## Known failure modes

- Domain not found or malformed input returns empty or error response
- RDAP/WHOIS lookup may be rate-limited or unavailable for some TLDs
- DKIM selector detection is heuristic and may miss custom selectors
- Payment failure (insufficient USDC balance) blocks the call
- Very new domains may not yet have propagated DNS or registration data

## How this service works

86 APIs for AI agents: web scraping and crawling to Markdown, AI summaries, data extraction and cited answers, screenshots and PDF, PDF, OCR and document conversion, news, paper and developer search and more, paid per call with USDC on Base, Solana, Polygon or Arbitrum via x402. No account, no API key, free sample on every service.

## Output

Returns a JSON object with: DNS records (A, MX, CAA, nameservers, DNSSEC status), registration details (registrar, created/expires/updated dates, registration status flags, availability likelihood), and email security data (SPF record, DMARC policy, DKIM selectors found, overall grade A–F, numeric score 0–100, and specific findings like missing DNSSEC).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "description": "Domain name, e.g. example.com"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "dns": {
    "a": [
     "140.82.121.3"
    ],
    "mx": [
     {
      "exchange": "github-com.mail.protection.outlook.com",
      "priority": 0
     }
    ],
    "caa": [
     {
      "issue": "digicert.com",
      "critical": 0
     }
    ],
    "dnssec": false,
    "nameservers": [
     "dns1.p08.nsone.net"
    ]
   },
   "domain": "github.com",
   "checked_at": "2026-10-06T14:30:56.904Z",
   "registration": {
    "method": "rdap",
    "status": [
     "client delete prohibited"
    ],
    "created": "2007-10-09",
    "expires": "2028-10-09",
    "updated": "2026-09-07",
    "registrar": "MarkMonitor Inc.",
    "registered": true,
    "nameservers": [
     "dns1.p08.nsone.net"
    ],
    "likely_available": false
   },
   "email_security": {
    "spf": "v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblo...",
    "dmarc": "v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:dmarc@github.com; ruf=...",
    "grade": "A",
    "score": 95,
    "findings": [
     "DNSSEC not enabled"
    ],
    "dmarc_policy": "quarantine",
    "dkim_selectors_found": [
     "google"
    ]
   }
  },
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentsvc-io-domain-check-eb0946e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentsvc.io](https://www.zero.xyz/host/agentsvc.io/llms.txt)