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Karma.Domains Domain Expiry Checker
x402
Karma.Domains Domain Expiry Checker is a paid API for AI agents from api.karma.domains, paid per call via x402, $1.5/call, status unknown (last checked 2026-09-15).
Checks whether a domain name is available (expired/released) for registration or acquisition
Price / call$1.5
Success—
StatusUnknown
How this service works
Public API for Karma.Domains: programmatic access to domain intelligence — reports across auctions, expired, backorder, and buy-now inventories, SEO and authority metrics, Wayback history, availability checks, and Karma Metric. Use it to search, filter, and automate the same data workflows as the Karma.Domains web app. **Authentication:** `Authorization: Bearer <api_key>` (Pro subscription or agent credits). **Agent credits (x402):** HTTP 402 + `PAYMENT-REQUIRED` when unauthenticated; retry same URL with `PAYMENT-SIGNATURE` and optional `X-Karma-Plan-Id`. **Rate limits:** 60 requests per minute per API key (all endpoints share one counter). Response headers: `X-RateLimit-Limit`, `X-RateLimit-Remaining`, `X-RateLimit-Reset`. On exceed: HTTP 429 with `Retry-After`. If rate-limit storage is unavailable: HTTP 503. **Row quota:** 50,000 list rows per day per account (UTC reset). List responses include `X-Quota-Limit`, `X-Quota-Remaining`, `X-Quota-Reset`. Pagination: `page_size` 1–100 (Public API); `page × page_size ≤ 5000`.
Output
Returns a JSON object with the queried domain name and a boolean `available` field indicating whether the domain is currently available (expired or unregistered) for acquisition.
Example use cases
Example prompt
“Can you check if brandnewstartup.com has expired and is available to register or buy right now?”
Technical details
Endpoint
GEThttps://api.karma.domains/v1/domains/checker/expiryWhen to prefer
Use this endpoint when you need a quick, programmatic boolean check on whether a specific domain name is available for registration or purchase — especially when automating domain monitoring workflows, screening lists of candidate domains, or integrating domain availability checks into an agent pipeline that already uses the Karma.Domains ecosystem for domain intelligence.
Side effects
- Missing required `domain` query parameter — HTTP 400 validation error
- Unauthenticated request — HTTP 402 with PAYMENT-REQUIRED header, requiring retry with PAYMENT-SIGNATURE
- Rate limit exceeded (>60 req/min) — HTTP 429 with Retry-After header
- Daily row quota of 50,000 exhausted — quota headers indicate reset time
- Rate-limit storage unavailable — HTTP 503 service unavailable
- Invalid or malformed domain string — likely 400 or unexpected result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "example.com",
"available": true
}
}Tags
x402
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