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FYI: Some legacy projects were retired, so a few historical links may no longer resolve.
Summary
Free 🔍 P3X Network MCP is a Model Context Protocol server, published as p3x-network-mcp on npm, that brings P3X Network diagnostics into Claude Code, Codex, Cursor, and other MCP-compatible assistants. It exposes 17 tools for network audits, DNS propagation, SSL/TLS, WHOIS, security headers, BGP, MX and email deliverability, DNSBL, IPv6, HTTP response and redirects, geolocation, reverse DNS, and end-to-end mail checks with SPF/DKIM/DMARC, spam scoring, header analysis, and AI remediation guidance in 10 languages. Install it with claude mcp add p3x-network -- npx p3x-network-mcp, then ask natural-language questions such as "audit example.com" or "why do my emails land in spam?" MIT licensed and free with no signup.