Domain Sentinel · Schema

DomainLookup

Domain MonitoringWHOIS LookupRDAP APIBrand ProtectionExpiry AlertsDNS Monitoring

Properties

Name Type Description
id string
domain string
available booleannull true = free, false = registered, null = unknown (see maybeAvailable)
checkMethod string Data source used for this answer
maybeAvailable boolean Present and true when the DNS check found no delegation: the domain may be free but no registry source could confirm it
ldhName stringnull
unicodeName stringnull
handle stringnull
rdapServer stringnull
secureDNS booleannull
delegationSigned booleannull
lookedUpAt string
registryBusy object Present when the registry was busy (at its rate limit or refusing for a while): the answer is the last known one, from lookedUpAt, and the registry can be asked again after retryAt. Not billed.
entities array
nameservers array
statuses array
events array
View JSON Schema on GitHub

JSON Schema

domain-sentinel-com-domain-lookup-schema.json Raw ↑
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://artifacts.apis.io/domain-sentinel-com/json-schema/domain-sentinel-com-domain-lookup-schema.json",
  "title": "DomainLookup",
  "x-generated": "2026-11-05",
  "x-method": "derived",
  "x-generator": "derive-json-schema.py",
  "x-source": "openapi/domain-sentinel-com-openapi.yml#/components/schemas/DomainLookup",
  "type": "object",
  "required": [
    "domain",
    "available",
    "entities",
    "nameservers",
    "statuses",
    "events"
  ],
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid"
    },
    "domain": {
      "type": "string"
    },
    "available": {
      "type": [
        "boolean",
        "null"
      ],
      "description": "true = free, false = registered, null = unknown (see maybeAvailable)"
    },
    "checkMethod": {
      "type": "string",
      "enum": [
        "rdap",
        "whois43",
        "dns"
      ],
      "description": "Data source used for this answer"
    },
    "maybeAvailable": {
      "type": "boolean",
      "description": "Present and true when the DNS check found no delegation: the domain may be free but no registry source could confirm it"
    },
    "ldhName": {
      "type": [
        "string",
        "null"
      ]
    },
    "unicodeName": {
      "type": [
        "string",
        "null"
      ]
    },
    "handle": {
      "type": [
        "string",
        "null"
      ]
    },
    "rdapServer": {
      "type": [
        "string",
        "null"
      ]
    },
    "secureDNS": {
      "type": [
        "boolean",
        "null"
      ]
    },
    "delegationSigned": {
      "type": [
        "boolean",
        "null"
      ]
    },
    "lookedUpAt": {
      "type": "string",
      "format": "date-time"
    },
    "registryBusy": {
      "type": "object",
      "description": "Present when the registry was busy (at its rate limit or refusing for a while): the answer is the last known one, from lookedUpAt, and the registry can be asked again after retryAt. Not billed.",
      "properties": {
        "retryAt": {
          "type": "string",
          "format": "date-time"
        }
      }
    },
    "entities": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/Entity"
      }
    },
    "nameservers": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/Nameserver"
      }
    },
    "statuses": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "events": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/Event"
      }
    }
  },
  "$defs": {
    "Entity": {
      "type": "object",
      "properties": {
        "role": {
          "type": "string"
        },
        "handle": {
          "type": [
            "string",
            "null"
          ]
        },
        "name": {
          "type": [
            "string",
            "null"
          ]
        },
        "organization": {
          "type": [
            "string",
            "null"
          ]
        },
        "ianaId": {
          "type": [
            "string",
            "null"
          ]
        },
        "abuseEmail": {
          "type": [
            "string",
            "null"
          ]
        },
        "abusePhone": {
          "type": [
            "string",
            "null"
          ]
        }
      }
    },
    "Event": {
      "type": "object",
      "properties": {
        "eventAction": {
          "type": "string"
        },
        "eventDate": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time"
        }
      }
    },
    "Nameserver": {
      "type": "object",
      "properties": {
        "ldhName": {
          "type": "string"
        },
        "ipv4": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "ipv6": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      }
    }
  }
}

Work with this as data

Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for schemas

4 MCP tools reach this
  • find_json_schemasBrowse and filter every JSON Schema in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/domain-sentinel-com-domain-lookup"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.