# Domain Checker

> Use this tool when you need to perform domain research, such as checking availability, retrieving DNS records, or analyzing SSL certificates. It solves problems related to domain investment, security auditing, and competitive analysis by providing comprehensive domain intelligence through aggregated data from multiple sources. The Domain Checker tool takes domain names as input and returns detailed information, making it a valuable resource for AI agents and applications requiring automated domain lookup capabilities.

Canonical page: https://skillsregistry.net/skills/rinadelph-domain-research  
JSON: https://api.skillsregistry.net/v1/skills/rinadelph-domain-research

## Description

This MCP server provides domain research capabilities through integration with multiple free APIs and services, enabling AI agents to perform domain availability checks, WHOIS lookups via RDAP protocol, DNS record retrieval, SSL certificate analysis, and expired domain discovery. Built using Python with httpx, dnspython, and BeautifulSoup, it aggregates data from sources like DomainsDB, Dynadot, NameJet, and SnapNames for expired domain searches, uses Cloudflare DNS-over-HTTPS for reliable DNS queries, and performs direct SSL socket connections for certificate validation. The implementation requires no API keys and fetches fresh data on every request, making it valuable for domain investment research, security auditing, competitive analysis, and building AI assistants that need comprehensive domain intelligence without manual lookup processes.

## Trust

- **Trust score (0–1):** 0.65
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** cloud-infra
- **Updated:** 2026-09-02

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/rinadelph-domain-research)
- **Repository:** <https://github.com/rinadelph/domain-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "rinadelph-domain-research"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/rinadelph-domain-research` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/rinadelph-domain-research/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt