ff-privaterag is an open-source CLI tool for building a local, private knowledge base by importing documents and code into a vector database. It supports semantic retrieval via MCP, works offline, and is designed for users needing secure, on-device RAG solutions.
In the RAG, search & retrieval space, ff-privaterag takes a focused approach. Allowing users to build a private, local knowledge base for semantic search and retrieval without data leaving their device. It is built as an open-source project for chinese developers and organizations needing private RAG solutions. ff-privaterag is open source under the MIT license. The product ships for the command line, and it can be self-hosted.
Behind ff-privaterag is fanmengfei, and the product first shipped in 2026. Key capabilities include local vector database, semantic retrieval, and MCP support. It exposes integrations via an MCP server.
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