Karma.Domains Domain Expiry Checker

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.

• 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