Domain Check MCP Server

The Domain Check MCP Server is a lightweight, protocol‑driven service that lets AI assistants query domain availability and market data directly from IONOS’s private API endpoints. By exposing a set of high‑level tools—, , and —the server transforms raw network calls into semantic actions that can be invoked by a conversational agent. This bridges the gap between an AI’s natural language queries and the low‑level HTTP interactions required to check domain status, making it trivial for developers to embed domain search capabilities into chatbots, virtual assistants, or any AI‑powered workflow.

The core problem this MCP solves is the friction of integrating domain lookup services into conversational AI. Traditional approaches require developers to manage API keys, handle pagination, and parse JSON responses manually. With the Domain Check MCP, those responsibilities are encapsulated behind a simple, declarative interface that follows the Model Context Protocol. An AI assistant can simply call with a domain name, and the MCP server handles authentication, request formatting, and error handling internally. This eliminates boilerplate code and reduces the risk of misconfiguring external services.

Key features include:

• Domain availability checking – Quickly determine if a desired domain is free or already registered.
• Alternative suggestions – Generate creative, brand‑friendly alternatives when the original domain is taken.
• Marketplace insights – Query Sedo for existing offers, giving users a sense of market value and negotiation possibilities.
• Protocol‑native integration – Tools are exposed as MCP actions, enabling seamless invocation from any MCP‑compliant client such as Claude or other AI assistants.

Real‑world scenarios that benefit from this server are abundant. A startup founder could ask their AI assistant, “Is techspark.com available?” and receive an instant confirmation or a list of suggestions. A digital marketing agency could automate domain acquisition workflows, pulling Sedo offers into their CRM to identify potential purchases. Even educational platforms can use the tool to teach students about domain strategy by exposing recommendations based on current availability.

Integration is straightforward: add the server to your and reference it in your AI’s tool set. Once configured, the assistant can invoke domain queries as part of a broader conversation, combining them with other business logic or data sources. Because the MCP server runs locally (or in a container), latency is minimal, and developers retain full control over the underlying API calls.

The standout advantage of this MCP lies in its privacy‑first, self‑contained design. By routing all domain queries through a local server, sensitive information never leaves the developer’s environment unless explicitly shared. Additionally, the use of IONOS endpoints—though undocumented—offers a richer data set than many public registrars, giving users deeper insights into domain availability and market trends. This combination of ease of use, powerful features, and secure operation makes the Domain Check MCP Server an indispensable tool for any AI‑centric development that involves domain management.