certdesk MCP MCP server

A remote MCP server provided by certdesk that allows AI agents to perform TLS certificate diagnostics, expiry monitoring, and security checks without requiring an API key or signup. It supports querying certificate verdicts, checking domain registration status, assessing web server security grades, and retrieving DNS/hosting facts.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by certdesk

MCP endpoint (Streamable HTTP)

https://certdesk.dev/mcp

Vendor documentation

What you can do with it

Check certificate expiry and verdict for a domain
Verify web server security grade and TLS configuration
Retrieve DNS and hosting facts including nameservers and ASN
Explain TLS error messages from various programming environments

Tools advertised by the last live check:

check_certificate
check_expiry
check_security
check_dns
check_dns_propagation
explain_tls_error
watch_expiry

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 a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http certdesk-mcp https://certdesk.dev/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 certdesk-mcp --url https://certdesk.dev/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "certdesk-mcp": {
      "url": "https://certdesk.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "certdesk-mcp": {
      "type": "streamableHttp",
      "url": "https://certdesk.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "certdesk-mcp": {
      "type": "http",
      "url": "https://certdesk.dev/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 certdesk-mcp https://certdesk.dev/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": {
    "certdesk-mcp": {
      "url": "https://certdesk.dev/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": {
    "certdesk-mcp": {
      "serverUrl": "https://certdesk.dev/mcp"
    }
  }
}

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