Ssl Checker X402
About
Check SSL/TLS certificate validity, expiry, issuer, chain details, and security grade for any domain. -- x402 micropayment API + MCP server for AI agents
Details
- Author
- Br0ski777
- Downloads
- 240
- Categories
- Developer Tools
Jump to
- Pay‑per‑call micropayment, no monthly subscription or rate limits.
- No API key, signup, or account required.
- Returns structured JSON with security grade, expiry, issuer, and protocol.
- Integrates with any MCP‑compatible client or HTTP‑based agent.
- Built on the x402 protocol using USDC on Base L2.
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
Ssl Checker X402Command (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
Add the server URL to your MCP client configuration (Claude Desktop, Cursor, ElizaOS, etc.). For direct HTTP access, send a POST request to /api/check with a JSON body containing the domain; the server returns a 402 payment challenge, which any x402‑aware client (e.g., @x402/fetch, x402-agent-tools) can resolve automatically. The single exposed tool is security_check_ssl.
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"ssl checker x402": {
"ssl-checker": {
"url": "https://ssl-checker-production-3dda.up.railway.app/mcp",
"transport": "sse"
}
}
}
}McpServers
{
"ssl-checker": {
"url": "https://ssl-checker-production-3dda.up.railway.app/mcp",
"transport": "sse"
}
}SSL Checker API
Check SSL/TLS certificate validity, expiry, issuer, chain details, and security grade for any domain. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"ssl-checker": {
"url": "https://ssl-checker.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://ssl-checker.api.klymax402.com/api/check" \
-H "Content-Type: application/json" \
-d '{"domain":"..."}'
-> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
| security_check_ssl | POST | /api/check | $0.002 | Check SSL certificate for a domain |
security_check_ssl
Use this when you need to check if a domain's SSL/TLS certificate is valid, when it expires, and who issued it. Returns structured certificate data in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| domain | string | yes | Domain name to check SSL certificate (e.g. example.com) |
Example response:
{"domain":"example.com","valid":true,"expiryDate":"2026-12-15","daysRemaining":245,"issuer":{"name":"DigiCert","organization":"DigiCert Inc"},"protocol":"TLSv1.3","securityGrade":"A+"}
When to use: deploying a website, FOR monitoring certificate expiration, auditing security posture, and validating HTTPS setup.
Not for: DNS lookup (use network_lookup_dns), HTTP headers analysis (use network_analyze_headers), port scanning (use network_scan_ports).
Example agent prompts
- "Check if a domain's SSL/TLS certificate is valid, when it expires, and who issued it"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (eip155:8453)
- Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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