# IPIntel.ai Domain Availability Check

> IPIntel.ai Domain Availability Check is a paid API for AI agents from tools.ipintel.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Checks whether a domain name is registered or available for registration using RDAP and DNS signals, returning confidence score and registration details

## Facts

- Endpoint: POST https://tools.ipintel.ai/domain-availability
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ipintel-ai-domain-availability-check-332b1b48
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H0-vkkzvI0XAtb4LxBWz5

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 ipintel-ai-domain-availability-check-332b1b48 -d '<json body>'
```

Example prompt: Can you check if 'moonlightcoffee.io' is available to register, and if not, tell me when it expires and who the registrar is?

## When to prefer this

Use this endpoint when you need authoritative, multi-signal domain availability data combining both RDAP and DNS lookups with a confidence score — especially for automated agents doing pre-registration checks, domain portfolio analysis, or registration workflow automation. Prefer over simple WHOIS-only checks when you need structured JSON output with expiration dates and registrar info.

## Known failure modes

- Domain not found in RDAP or DNS — may return low confidence or ambiguous status
- TLD not supported by RDAP — falls back to DNS-only signals
- Network timeout reaching RDAP/DNS servers — returns error response
- Invalid domain format submitted — returns validation error
- Payment failure via x402 protocol — call not executed

## How this service works

Pay-per-call x402 APIs for satellite observation, DNS lookup, domain health checks, reverse DNS, WHOIS lookup, domain availability checks, JSON Schema validation, JWT decoding, Base64 encoding/decoding, and HTTP latency checks. Designed for autonomous agents, developers, domain diagnostics, registration availability checks, API testing, structured output validation, token inspection, data transformation, uptime checks, and HTTP latency diagnostics.

## Output

Returns a JSON object with: availability boolean, domain and TLD, confidence score (0-1), check method (rdap/dns), registration status string, registrar name, registration and expiration event dates, RDAP/DNS signal details (record count, RDAP HTTP status, whether RDAP is supported), and timestamp of the check.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain name to check, for example example.com"
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tld": {
       "type": "string"
      },
      "domain": {
       "type": "string"
      },
      "method": {
       "type": "string"
      },
      "status": {
       "type": "string"
      },
      "service": {
       "type": "string"
      },
      "signals": {
       "type": "object",
       "properties": {
        "dns_found": {
         "type": "boolean"
        },
        "rdap_found": {
         "type": "boolean"
        },
        "rdap_status": {
         "type": "integer"
        },
        "rdap_supported": {
         "type": "boolean"
        },
        "dns_record_count": {
         "type": "integer"
        }
       },
       "additionalProperties": true
      },
      "available": {
       "type": "boolean"
      },
      "checked_at": {
       "type": "string"
      },
      "confidence": {
       "type": "number"
      },
      "registration": {
       "type": "object",
       "properties": {
        "events": {
         "type": "object",
         "properties": {
          "expiration": {
           "type": "string"
          },
          "registration": {
           "type": "string"
          }
         },
         "additionalProperties": true
        },
        "statuses": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "registrar": {
         "type": "string"
        }
       },
       "additionalProperties": true
      }
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tld": "com",
  "domain": "example.com",
  "method": "rdap",
  "status": "registered",
  "service": "domain_availability",
  "signals": {
   "dns_found": true,
   "rdap_found": true,
   "rdap_status": 200,
   "rdap_supported": true,
   "dns_record_count": 7
  },
  "available": false,
  "checked_at": "2026-07-01T10:11:59+00:00",
  "confidence": 0.98,
  "registration": {
   "events": {
    "expiration": "2026-08-13T04:00:00Z",
    "registration": "1995-08-14T04:00:00Z"
   },
   "statuses": [
    "client transfer prohibited"
   ],
   "registrar": "example registrar"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ipintel-ai-domain-availability-check-332b1b48/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.ipintel.ai](https://www.zero.xyz/host/tools.ipintel.ai/llms.txt)