# Domain Format Check for Security Review

> Domain Format Check for Security Review is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Validates a hostname for correct public-domain syntax and normalizes internationalized domain names (IDNs) using DNS data only.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-domain-domain-format-security-review?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domain-format-check-for-security-review-8770189a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iNMgv7y3cjXzF7nOkIWFC

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 domain-format-check-for-security-review-8770189a -d '<json body>'
```

Example prompt: Can you check whether 'xn--nxasmq6b.com' is a valid public domain and give me its normalized form? I just need the syntax and IDN check, no email verification.

## When to prefer this

Choose this endpoint when you need a lightweight, fast syntax check and IDN normalization for a domain string — especially in security review pipelines where you want to detect homograph attacks or malformed hostnames before further processing. Prefer this over full DNS resolution or email verification tools when you only need format validity, not reachability or inbox existence.

## Known failure modes

- Invalid or malformed domain string returns a syntax error or invalid flag
- Private/reserved domain names (e.g. localhost, .local) may be flagged as non-public
- Empty or missing domain field triggers a schema validation error
- Extremely long labels or domains exceeding DNS length limits may be rejected
- Non-string inputs cause input type errors

## How this service works

Domain format check for Security review: Check a hostname for valid public-domain syntax and normalize IDNs. DNS data only; does not send email or verify that an inbox exists.

## Output

Returns a validation result indicating whether the submitted hostname conforms to valid public-domain syntax, along with the normalized (IDNA-encoded) form of the domain if applicable. Does not perform DNS resolution, email delivery, or inbox verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "default": "example.com",
   "description": "Public DNS domain, e.g. example.com."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domain-format-check-for-security-review-8770189a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)