Check whether a domain is registered using RDAP (via the rdap.org bootstrap redirector).
About the Domain Availability API
Domain Availability API on Apizie: 1 endpoint (Check Availability) returned as clean JSON through one API key. 1 endpoint is live now. Call it over REST at https://zieapi.vercel.app/v1/web-tools:rdap/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.
| Project key | web-tools:rdap |
|---|---|
| Status | Live |
| Endpoints | 1 |
| Category | Web Tools |
| Source | rdap.org |
| Base URL | https://zieapi.vercel.app/v1/web-tools:rdap/{endpoint} |
| For AI tools | OpenAPI spec · Markdown (what is this?) |
Domain Availability API FAQ
How do I call the Domain Availability API?
Create a free Apizie key, then send GET https://zieapi.vercel.app/v1/web-tools:rdap/availability with the header x-api-key. Every endpoint returns { project, data, timestamp }.
Is the Domain Availability API free on Apizie?
Yes. The Free plan includes 1,000 requests a month at 100 requests a minute, no credit card.
Can AI agents use the Domain Availability API?
Yes. Add the Apizie MCP server (https://zieapi.vercel.app/mcp) to Claude, ChatGPT, Cursor or VS Code, then ask in plain language. The agent calls run_scraper with project key web-tools:rdap.
What is the status of the Domain Availability API?
Live: works with just an Apizie key