Mcp Domaintools Server

The mcp-domaintools server fills a critical gap for AI assistants that need to interrogate the internet in real time. It exposes a rich set of network and domain‑centric capabilities—DNS resolution, WHOIS lookups, ping tests, HTTP endpoint monitoring, and TLS certificate analysis—through the Model Context Protocol. This allows models to ask for up‑to‑date information about a host or domain without leaving the conversation, enabling more informed decision‑making and dynamic content generation.

For developers building AI workflows, this server is a versatile bridge between the assistant’s reasoning layer and external data sources. By configuring a single MCP endpoint, you can add network diagnostics to chat‑based troubleshooting tools, automate security assessments, or enrich content with live domain metadata. The server’s design prioritizes reliability: local DNS queries use the host’s configured resolvers, while remote queries default to Cloudflare and Google DNS‑over‑HTTPS, with a configurable fallback to custom DOH servers. This dual strategy ensures that queries succeed even when local resolvers are blocked or misconfigured.

Key features include:

• Comprehensive DNS support for A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, and TXT records.
• WHOIS integration that can query both standard and custom WHOIS servers, returning structured data per RFC 3912.
• Connectivity testing via ICMP ping and HTTP ping, providing granular timing metrics (DNS lookup, TCP connect, TLS handshake, TTFB).
• TLS certificate analysis that checks chain validity, expiration dates, and extracts detailed cert fields.
• Server‑Sent Events (SSE) support for streaming results to web dashboards or real‑time monitoring UIs.

Typical use cases span security operations—automated certificate renewal checks, domain ownership verification, and network reachability monitoring—to content creation pipelines that embed live domain stats into articles or reports. In a customer support scenario, an AI assistant could query the status of a user’s domain and suggest troubleshooting steps based on ping latency or TLS errors, all without leaving the chat interface.

By integrating mcp-domaintools into your MCP‑enabled environment, you gain a robust, low‑latency channel to the internet’s foundational services. This empowers AI assistants to act with up‑to‑date, contextually relevant information, elevating the quality and reliability of automated interactions.