SSL domain certificate checker | Check SSL Status Instantly
Check your SSL domain certificate's validity and configuration with our tool. Assess status, expiration, and issuer details to ensure website security. Identify potential SSL issues before they affect users.
What Is an SSL Certificate Checker?
Free online SSL certificate checker tool
Check SSL certificate status, expiration, and security configuration
Key Features
Real-time Validation
Instant SSL certificate verification and status check
Comprehensive Analysis
Detailed security assessment and health score
Protocol Support
Complete SSL/TLS protocol compatibility check
Browser Compatibility
Cross-browser certificate validation
Chain Verification
Full certificate chain validation
Security Alerts
Clear warnings about security issues
Use this tool from your AI agent
Free JSON API and Model Context Protocol (MCP) server. No signup, no API key, CORS open. Designed for Claude, ChatGPT, Cursor, scripts and frontend apps.
curl -X POST https://mate.tools/api/v1/ssl-check.php \
-H "Content-Type: application/json" \
-d '{"domain":"example.com"}'import urllib.request, json
req = urllib.request.Request(
"https://mate.tools/api/v1/ssl-check.php",
data=json.dumps({"domain":"example.com"}).encode(),
headers={"Content-Type": "application/json"},
)
with urllib.request.urlopen(req) as r:
print(json.load(r))const r = await fetch("https://mate.tools/api/v1/ssl-check.php", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({"domain":"example.com"}),
});
console.log(await r.json()); Add to claude_desktop_config.json (Claude Desktop), ~/.cursor/mcp.json (Cursor), or any other MCP-compatible client:
{
"mcpServers": {
"mate-tools": {
"command": "npx",
"args": ["-y", "@mate-tools/mcp-server"]
}
}
}