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OpenapiDdns

Check whether a free Dynamic DNS hostname is available

API Docs with browser client
GET
/dns/ddns/free-hostnames/check

Check whether a label is available under a free Dynamic DNS parent domain, and if not, why. The answer is ADVISORY: another user may claim the name first, so claimFreeDdnsHostname re-checks and can still fail with "taken".

Authorization

x-api-key<token>

In: header

Query Parameters

label*string
Length1 <= length <= 63
parentDomain*string
Match^[a-z0-9_]([a-z0-9-]{0,61}[a-z0-9_])?(\.[a-z0-9_]([a-z0-9-]{0,61}[a-z0-9_])?)*$

Header Parameters

x-namefi-eip7702-account?string

Optional delegated account address to authenticate as when the signer is an approved signer. Preferred header name.

x-namefi-eip1271-account?string

Legacy alias for x-namefi-erc1271-account. When multiple delegated account headers are present, x-namefi-eip7702-account takes precedence, then x-namefi-erc1271-account.

x-namefi-erc1271-account?string

Optional delegated account address to authenticate as when the signer is an approved signer. Preferred ERC-1271 header name.

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

curl -X GET "https://api.namefi.dev/v-next/dns/ddns/free-hostnames/check?label=string&parentDomain=string"
Empty
{
  "defined": true,
  "code": "BAD_REQUEST",
  "status": 400,
  "message": "Bad Request",
  "data": null
}
{
  "defined": true,
  "code": "UNAUTHORIZED",
  "status": 401,
  "message": "Unauthorized",
  "data": null
}
{
  "defined": true,
  "code": "PAYMENT_REQUIRED",
  "status": 402,
  "message": "Payment Required",
  "data": null
}
{
  "defined": true,
  "code": "FORBIDDEN",
  "status": 403,
  "message": "Forbidden",
  "data": null
}
{
  "defined": true,
  "code": "NOT_FOUND",
  "status": 404,
  "message": "Not Found",
  "data": null
}
{
  "defined": true,
  "code": "NOT_ACCEPTABLE",
  "status": 406,
  "message": "Not Acceptable",
  "data": null
}
{
  "defined": true,
  "code": "TIMEOUT",
  "status": 408,
  "message": "Request Timeout",
  "data": null
}
{
  "defined": true,
  "code": "CONFLICT",
  "status": 409,
  "message": "Conflict",
  "data": null
}
{
  "defined": true,
  "code": "PRECONDITION_FAILED",
  "status": 412,
  "message": "Precondition Failed",
  "data": null
}
{
  "defined": true,
  "code": "TOO_MANY_REQUESTS",
  "status": 429,
  "message": "Too Many Requests",
  "data": null
}
{
  "defined": true,
  "code": "INTERNAL_SERVER_ERROR",
  "status": 500,
  "message": "Internal Server Error",
  "data": null
}

Instant Register domain With X402 GET

Purchase a single domain instantly without adding to cart. Validates domain availability, creates payments and order, then starts the order processing workflow.

Claim a free Dynamic DNS hostname POST

Claim a free hostname under a Namefi-owned parent domain and receive Dynamic DNS credentials for it. No domain ownership, purchase, or wallet is required, and the hostname is NOT minted as a domain. The key is scoped to this one hostname. The secret is returned ONCE in this response and is never recoverable afterwards — store it immediately.