reigner is a command-line agent that answers questions from a user-compiled corpus, providing citations for every claim. It supports retrieval-augmented generation (RAG) and integrates with the Model Context Protocol (MCP). The tool is open source and suitable for developers and researchers.
reigner is a RAG, search & retrieval product. It focuses on answering questions from a compiled corpus with verifiable citations using a local agent. It is built as an open-source project for developers and researchers. reigner is open source under the MIT license. reigner is available on the command line, and it can be self-hosted.
reigner first shipped in 2026. Key capabilities include Corpus QA, citation support, and CLI interface. It exposes integrations via an MCP server.
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