MCP server

CertGuard

dev.workers.mike-tusa.certguard/certguard

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Free SSL/TLS certificate checker: expiry, chain trust, hostname match, TLS version, A/B/C/F grade.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

1

Token cost

About 400 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http certguard https://certguard.mike-tusa.workers.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.certguard]
url = "https://certguard.mike-tusa.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"certguard":{"httpUrl":"https://certguard.mike-tusa.workers.dev/mcp"}}}

Cursor

{"mcpServers":{"certguard":{"url":"https://certguard.mike-tusa.workers.dev/mcp"}}}

VS Code

{"servers":{"certguard":{"type":"http","url":"https://certguard.mike-tusa.workers.dev/mcp"}}}

Antigravity

agy mcp add certguard https://certguard.mike-tusa.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"certguard","server_url":"https://certguard.mike-tusa.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"certguard","server_url":"https://certguard.mike-tusa.workers.dev/mcp"}

Tools

• check_certificate ~400 tokens
  Run a live TLS handshake against host:port and audit the certificate the server presents. Returns an A/B/C/F grade and summary, expiry (days remaining), hostname match, chain completeness and trust against Mozilla's root store, negotiated TLS version and cipher suite, key type/size, findings, and a

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