email_posture

Input

REST API

curl -H "Authorization: Bearer sic_..." \
  -H "Content-Type: application/json" \
  -X POST https://sicenter.io/api/tools/email_posture \
  -d '{"domain":"<string>"}'

MCP server

# MCP — call from Claude Desktop, Cursor, or any MCP client
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "email_posture",
    "arguments": {
        "domain": "<string>"
    }
  }
}

Endpoint: https://sicenter.io/api/mcp. See /mcp for connection guides for Claude Desktop, Cursor, and custom orchestrators.

More tools in Discovery

• subdomain_enumPassively enumerate subdomains of a domain by querying certificate transparency logs (crt.sh). Fully passive — does not touch the target's authoritative DNS.
• port_scanRun a TCP connect scan on a host. By default probes the top ~40 common ports; an explicit port list or limit can be supplied. Returns open ports with best-effort service names.
• http_fingerprintInspect a URL's HTTP response: server/CDN detection, security headers audit (HSTS, CSP, X-Frame-Options…), and HTML <title> capture. Passive — sends only HEAD + GET with a browser-like user agent.
• dns_recordsQuery authoritative DNS records (A/AAAA/MX/TXT/NS/CNAME/SOA) for a domain using the serverless resolver. No network beyond DNS.
• whois_lookupFetch domain registration metadata (registrar, registrant, creation / expiry dates, nameservers) via RDAP. HTTPS-based — does not use legacy port-43 WHOIS.
• tls_auditConnect once over TLS, capture the certificate chain + negotiated protocol/cipher, and surface findings (expired, expiring-soon, self-signed, weak protocol, weak cipher).