Rag Hub MCPSelf-hosted RAG that speaks MCP

Drop folders on disk, get a searchable knowledge base served to any MCP-compatible agent or over REST. Zero infrastructure.

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GitHub

Folders are knowledge bases

1st-level folder = 1 KB, named after the folder. Drop documents, let indexing pick them up.

MCP-native

10 tools over the Model Context Protocol. Works with opencode, Claude Code, Cline and more.

Hybrid search

Vector cosine similarity fused with SQLite FTS5 keyword search, weighted and scored per chunk.

Multi-format

Markdown, text, HTML, code, PDF, DOCX, XLSX, PPTX — extracted to plain text.

Self-hosted & private

Your documents never leave your machine. Embeddings come from an OpenAI-compatible endpoint you control.

Zero infrastructure

One SQLite database with FTS5 by default. No vector database, no separate services, no server to keep running. A PostgreSQL + pgvector backend is available as an opt-in.