# NetIntel Domain Availability Check

> NetIntel Domain Availability Check is a paid API for AI agents from netintel.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Checks domain name availability across multiple TLDs, returning registration status, registrar info, expiry dates, and an overall availability grade

## Facts

- Endpoint: GET https://netintel.dev/domain-availability/check
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/netintel-domain-availability-check-ed2552f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b45iiyDZcqHP-2PBlxpQM

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 netintel-domain-availability-check-ed2552f0
```

Example prompt: Can you check which TLDs are available for 'acmelaunch' — I want to know if the .com, .io, and .co are taken, who owns them, and whether any are expiring soon?

## When to prefer this

Use this endpoint when you need a multi-TLD domain availability sweep with graded scoring and registrar/expiry metadata in a single call, rather than a simple single-domain WHOIS lookup. Ideal for brand name research, startup naming, or monitoring domains that may be expiring soon.

## Known failure modes

- Missing required 'domain' query parameter returns a 400 error
- Invalid or malformed domain string may return an error or empty results
- Payment not received or rejected results in 402 Payment Required
- Rate limiting or provider-side WHOIS throttling may cause timeouts
- Very new or obscure TLDs may not be checked or may return incomplete data

## How this service works

Check if a domain name is available for registration by querying RDAP and DNS — pass a bare name (e.g. mybrand) to sweep it across 10 popular TLDs simultaneously, or a full domain (e.g. mybrand.com) to check that single domain — returns registration status, expiry date if registered, and available/taken TLD lists so agents can find the best domain for a brand or project.

## Output

Returns a JSON object with a domain name, an overall availability grade (e.g. 'C'), a numeric score (0-100), a results array listing each TLD's registration status, registrar, expiry date, and expiring-soon flag, plus arrays of taken and available TLDs, and findings explaining score deductions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain name with or without TLD (e.g. mybrand or mybrand.com)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "name": {
       "type": "string"
      },
      "grade": {
       "type": "string"
      },
      "score": {
       "type": "number"
      },
      "results": {
       "type": "array"
      },
      "findings": {
       "type": "array"
      },
      "taken_tlds": {
       "type": "array"
      },
      "available_tlds": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "mybrand",
  "grade": "C",
  "score": 70,
  "results": [
   {
    "domain": "mybrand.com",
    "status": "registered",
    "available": false,
    "registrar": "GoDaddy LLC",
    "expires_at": "2025-06-01T00:00:00Z",
    "expiring_soon": true,
    "days_until_expiry": 79
   },
   {
    "domain": "mybrand.io",
    "status": "available",
    "available": true,
    "registrar": null,
    "expires_at": null,
    "expiring_soon": false,
    "days_until_expiry": null
   }
  ],
  "findings": [
   {
    "rule": "com_taken",
    "detail": "mybrand.com is already registered",
    "deduction": -20
   }
  ],
  "taken_tlds": [
   ".com",
   ".net",
   ".org"
  ],
  "available_tlds": [
   ".io",
   ".co",
   ".xyz"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/netintel-domain-availability-check-ed2552f0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from netintel.dev](https://www.zero.xyz/host/netintel.dev/llms.txt)