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SSL Checker API

br0ski777/ssl-checker-x402

Gives Claude tools to check SSL/TLS certificates for any domain. You get validity status, expiration dates, issuer information, certificate chain details, and security grades. Runs as a remote service at ssl-checker.api.klymax402.com and uses x402 micropayments, so you'll need to handle payment tokens for API calls. Useful when you're auditing domains, monitoring certificate health across infrastructure, or need to verify SSL configs without manually opening browsers or running openssl commands. The repository is pretty bare, just the MCP wrapper code without much documentation on the x402 payment flow or available tool schemas.

tool
1
transport
SSE
last updated
May 16, 2026
View on GitHub

Tools

1 tools

Public tool metadata for what this MCP can expose to an agent.

security_check_sslUse 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. Returns: 1. valid (boolean) 2. expiryDate1 params

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. Returns: 1. valid (boolean) 2. expiryDate

Parameters* required
domainstring
Domain name to check SSL certificate (e.g. example.com)

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Readme

SSL Checker API

MCP Server x402 License: MIT

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

View the full README on GitHub

Details

Repository
github.com/br0ski777/ssl-checker-x402
Website
github.com/Br0ski777/ssl-checker-x402
Transport
SSE
Registry
MCP registry, active

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