New tool mcp-drift-monitor catches unauthorized changes in MCP servers

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A developer named Pedro S has released mcp-drift-monitor, an open-source tool designed to detect unauthorized or unnoticed changes in Model Context Protocol (MCP) servers. The tool addresses a critical blind spot identified in a research paper (arXiv:2608.00997), which studied 19,099 MCP servers over 88.6 days and found that traditional change-detection methods miss silent description hash changes and newly added servers. mcp-drift-monitor implements a periodic full-catalog sweep — the primary control proposed but not built in the original paper — using a unified diff engine that handles both incremental polling and complete sweeps. The tool was calibrated against the paper's real dataset, successfully matching 19,877 server additions and 911 removals recorded during the study period. It is available on GitHub and Docker Hub under the AGPL-3.0 license, with CI/CD pipelines and multi-platform container support included.

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