{
  "markdown": "# SSL Checker API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://ssl-checker.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nCheck SSL/TLS certificate validity, expiry, issuer, chain details, and security grade for any domain. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"ssl-checker\": {\n      \"url\": \"https://ssl-checker.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl -X POST \"https://ssl-checker.api.klymax402.com/api/check\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"domain\":\"...\"}'\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `security_check_ssl` | POST | `/api/check` | $0.005 | Check SSL certificate for a domain |\n\n### `security_check_ssl`\n\nUse 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.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `domain` | string | yes | Domain name to check SSL certificate (e.g. example.com) |\n\nExample response:\n\n```json\n{\"domain\":\"example.com\",\"valid\":true,\"expiryDate\":\"2026-12-15\",\"daysRemaining\":245,\"issuer\":{\"name\":\"DigiCert\",\"organization\":\"DigiCert Inc\"},\"protocol\":\"TLSv1.3\",\"securityGrade\":\"A+\"}\n```\n\n**When to use**: deploying a website, FOR monitoring certificate expiration, auditing security posture, and validating HTTPS setup.\n\n**Not for**: DNS lookup (use `network_lookup_dns`), HTTP headers analysis (use `network_analyze_headers`), port scanning (use `network_scan_ports`).\n\n## Example agent prompts\n\n- \"Check if a domain's SSL/TLS certificate is valid, when it expires, and who issued it\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "sha": "ba65e4d06a70a2a1f42435daa60f2b2ed81791f06ade108046a1694449715198",
  "repo_slug": "br0ski777/ssl-checker-x402",
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  "api": "https://agentalog.com/api/listings/mcp_io_github_br0ski777_ssl_checker_199f2ac9/readme"
}