CertGuard
by certguard.mike-tusa.workers.dev · dev.workers.mike-tusa.certguard/certguard
Free SSL/TLS certificate checker: expiry, chain trust, hostname match, TLS version, A/B/C/F grade.
- Category
- Other
- Connection
- Remote (HTTP)
- Tools
- 1 reported
- Status
- Online
Connect it to your AI
Claude Code
claude mcp add --transport http certguard https://certguard.mike-tusa.workers.dev/mcpClaude, ChatGPT, Cursor and other apps
Add it as a custom connector with this URL (Streamable HTTP):
https://certguard.mike-tusa.workers.dev/mcpThis server expects extra headers, usually an API key from its maker.
Cursor, VS Code and other apps (mcp.json)
{
"mcpServers": {
"certguard": {
"url": "https://certguard.mike-tusa.workers.dev/mcp"
}
}
}Tools it offers
1 tool, as the server itself reported during our check on Oct 31, 2026.
check_certificateRun 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
Questions
What is the CertGuard MCP server?
Free SSL/TLS certificate checker: expiry, chain trust, hostname match, TLS version, A/B/C/F grade. It is made by certguard.mike-tusa.workers.dev and listed in the official MCP Registry as dev.workers.mike-tusa.certguard/certguard. MCP (Model Context Protocol) is the open standard that lets AI apps like Claude, ChatGPT and Cursor use outside tools.
How do I add CertGuard to Claude?
In the Claude app or claude.ai, open Settings, then Connectors, choose "Add custom connector" and paste https://certguard.mike-tusa.workers.dev/mcp. In Claude Code, run: claude mcp add --transport http certguard https://certguard.mike-tusa.workers.dev/mcp
How do I add CertGuard to ChatGPT?
ChatGPT can use remote MCP servers as connectors. In ChatGPT settings, under Apps and Connectors, turn on developer mode if asked, create a new connector and paste https://certguard.mike-tusa.workers.dev/mcp.
How do I add CertGuard to Cursor?
Open Cursor settings, go to MCP, choose "Add new MCP server" (or edit ~/.cursor/mcp.json) and add: { "mcpServers": { "certguard": { "url": "https://certguard.mike-tusa.workers.dev/mcp" } } }
Does CertGuard work right now?
Yes. It responded when we last checked on 31 Oct 2026. We check remote MCP servers every day.
What can CertGuard do?
It gives your AI 1 tool, including check_certificate. The full list is on this page.
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Markdown (GitHub README)
[](https://chen.media/mcp/dev-workers-mike-tusa-certguard-certguard)HTML (switches to dark mode on its own)
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