DomainCat MCP

DomainCat provides an MCP server that allows AI assistants to monitor domain expiry, SSL certificates, DNS records, and email security. It supports reading domain details, checking for expiring certificates, and managing domains and groups with appropriate API keys.

Visit DomainCat

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

Vendor evidenceStreamable HTTPOAuth sign-inEndpoint checked 2026-11-01Operated by DomainCat

You need:Free plan: one read-only key for all domains.Pro and MSP: read + write keys, group-scoped keys, up to 25 keys.

MCP endpoint (Streamable HTTP)

https://domaincat.app/api/mcp

Vendor documentation

What you can do with it

Check which SSL certificates expire this month
Verify if a domain is blacklisted
Add multiple domains to a specific group
List all monitored domains and their status

Source and maintenance

Vendor evidenceRegistry 1.0.0

mcp-registry: app.domaincat/domaincat@1.0.0 Project website

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 428 ms
95th percentile latency: 428 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 1, 2026, 10:15 PM UTC · probe · passed · 428 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http domaincat-mcp https://domaincat.app/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add domaincat-mcp --url https://domaincat.app/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable domaincat-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "domaincat-mcp": {
      "url": "https://domaincat.app/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "domaincat-mcp": {
      "type": "streamableHttp",
      "url": "https://domaincat.app/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start domaincat-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "domaincat-mcp": {
      "type": "http",
      "url": "https://domaincat.app/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http domaincat-mcp https://domaincat.app/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "domaincat-mcp": {
      "url": "https://domaincat.app/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "domaincat-mcp": {
      "serverUrl": "https://domaincat.app/api/mcp"
    }
  }
}

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Do you run DomainCat MCP?

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