Only 3 of 8 DuckDuckGo MCP Servers Passed Full Reliability Test for AI Agents

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A developer at HasData tested eight DuckDuckGo MCP servers by running twelve consecutive research queries through each, repeating the test three times roughly an hour apart. Only three servers — free-search-mcp, HasData's own hosted server, and nickclyde's duckduckgo-mcp-server — completed all twelve queries consistently across every pass. One server that appeared to succeed was not actually querying DuckDuckGo at all, while others failed due to errors, empty responses, or bot-detection blocks. The test was conducted on a single machine from one IP address on September 15, 2026, using the official MCP TypeScript SDK. All server configurations were published in copy-paste-ready format, and the testing harness was made publicly available for independent verification.

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