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120,659 servers. Updated
20 Best Security MCP Servers: compared and ranked, November 2026Ranked from 4,472 matching servers on stars, growth, downloads and maintenance. Updated .

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  • A
    license
    A
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    maintenance
    A domain security and privacy checker MCP server that runs locally, performing DNS, TLS, HTTP, and RDAP lookups to generate a scored report covering certificates, email authentication, DNS, and web security headers.
    3
    57 npm
    GPL 3.0
  • A
    license
    A
    quality
    B
    maintenance
    Checks and fixes a domain's email authentication (SPF, DKIM, DMARC), DNS health, propagation, blacklists and domain/SSL expiry, returning copy-paste fix records from a validating engine, never a model guess. Local stdio server (npx -y @dnsdoctor/mcp) with the same 27 tools as the hosted https://dnsdoctor.dev/mcp.
    29
    765 npm
    Apache 2.0
  • A
    license
    A
    quality
    B
    maintenance
    Provides passive OSINT reconnaissance for domains and IPs using public sources, with tools for WHOIS/RDAP, DNS, subdomain enumeration, Wayback Machine, HTTP headers, Shodan InternetDB, email security, TLS certificates, and ASN lookups, all without requiring API keys.
    15
    79 PyPI
    MIT
  • A
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    A
    quality
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    maintenance
    MCP server that lets AI coding agents (Claude Code, Cursor, Cline) audit Supabase projects for security misconfigurations AND apply the fixes — without leaving the agent. Tools: audit_project, list_findings, preview_fix (BEGIN/ROLLBACK safety), apply_fix (with confirmation), apply_all_fixes (transactional bulk). Closes the audit-fix loop entirely in the agent — other Supabase scanners only report.
    5
    8 npm
    1
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    An MCP server for managing Hetzner DNS zones and RRSets via the Hetzner Cloud API. It enables listing, creating, updating, deleting, importing/exporting zone files, and managing protection and TTLs from MCP clients.
    22
    76 npm
    MIT
  • A
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    A
    quality
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    maintenance
    An MCP server for domain intelligence — WHOIS, DNS records, SSL certificate inspection, SPF/DMARC validation, security-header audits, and blacklist/reputation checks, callable by AI agents. Powered by domainintel.app; runs server-side, no local setup.
    7
    58 npm
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    Domain security reconnaissance for AI agents — 13 tools (DNS+DNSSEC, SSL/TLS, HTTP security headers, SPF/DKIM/DMARC email auth, port scan, ASN, RDAP/WHOIS) plus a one-shot security_scan returning a 0–100 Health Score (A–F). Free, no API key.
    33
    464 npm
    1
    MIT
  • A
    license
    A
    quality
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    maintenance
    Enables AI assistants to retrieve Social Security COLA and yearly limits, calculate benefit increases and earnings-test withholding, and determine full retirement ages and claiming-age benefits from SSA-sourced data.
    6
    MIT
  • A
    license
    A
    quality
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    maintenance
    Vulnerability intelligence for AI agents that enables CVE lookup, package vulnerability checks, and dependency auditing without API keys.
    5
    MIT
  • A
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    A
    quality
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    maintenance
    Enables users to deterministically audit MCP servers for security issues across manifests, source, runtime responses, multi-call state, identity, and install scripts, and to run an inline gateway that gates tool calls and scans responses before returning them.
    3
    17 PyPI
    1
    Apache 2.0
  • A
    license
    A
    quality
    B
    maintenance
    Enables auditing a Supabase project's security beyond the dashboard's Security Advisor, checking anonymous access, RLS policies, and cross-tenant data leaks via read-only probes and a two-account test.
    4
    31 npm
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    MCP server for DNS lookups, reverse DNS, WHOIS, and domain checks. Zero auth, zero config.
    5
    64 npm
    3
    MIT
  • A
    license
    B
    quality
    B
    maintenance
    Zero-trust safety & settlement rail for autonomous AI agents. Sub-10ms deterministic guardrails, secret leak defense, bounded wallet controls, and on-chain Proof-of-Safety attestations via x402.
    15
    124 PyPI
    3
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Connects compatible AI clients to registered Windows or macOS computers, allowing users to inspect systems, work with files, run supported commands, and automate workflows through authorized remote access.
    1
    MIT
  • A
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    Not graded
    quality
    B
    maintenance
    A lightweight MCP server for security reviews that injects security requirements before code generation, scans dependencies for CVEs, and verifies generated code without disrupting workflow.
    73
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    Zero-key security toolkit for your AI assistant: grade any website's security A+ to F, check if CVEs are actively exploited via CISA KEV and EPSS, and get MITRE ATT&CK defenses explained in plain English. No API keys, no signup.
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Enables managing and observing Technitium DNS Server through MCP, including read-only or read-write tool surfaces, scoped bearer authentication, audit logging, and confirmation gates for destructive operations.
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Enables AI agents to monitor, trace, query, and manage local DNS resolver chains using MCP, with health checks, packet tracing, Pi-hole log access, and automated failover via natural language.
    8
    MIT
  • A
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    Not graded
    quality
    B
    maintenance
    InvokeWorks is an open-source MCP server for useful paid agent tools. Its flagship, site_audit, combines DNS, TLS, HTTP, redirect, and security-header checks into one structured result for 5 sats per call.
    MIT
  • A
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    Not graded
    quality
    C
    maintenance
    Official Model Context Protocol server exposing static AST security tools (audit_mcp_repository, audit_local_directory) to scan MCP tools for vulnerabilities before connecting them to Claude or Cursor.
    MIT
  • A
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    Not graded
    quality
    B
    maintenance
    Enables agents to run domain scans, DNS/DNSSEC and propagation lookups, WHOIS/RDAP, SPF/DKIM/DMARC/BIMI/MTA-STS and blacklist diagnostics through a keyless API. Also supports local DMARC report and raw-email parsing plus security-header generation.
    308 npm
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    Enables comprehensive management of Tailscale networks including device management, DNS configuration, file sharing via Taildrop, security monitoring, and network automation with built-in Grafana/Prometheus observability stack.
    5
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    Enables AI assistants to audit company domains for Trust Center platforms, compliance certifications, disclosed sub-processors, DNS identity and security records, email hardening, and live status-page health. It supports single-domain and parallel batch audits with structured risk scores and GRC summaries.
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    Enables enterprise MCP security auditing through 12 deterministic no-LLM tools for evidence-gated claims, skill/prompt supply-chain audits, token profiling, and server auth-mode checks.
    MIT