MCP tools

rag-hub-mcp exposes 9 tools over the Model Context Protocol. Any MCP-compatible agent (opencode, Claude Code, Cline…) can call them.

Tool	Description
rag_list_kbs	List knowledge bases with stats
rag_list_documents	List documents in a KB
rag_search	Search KBs (kb optional — omitting searches all)
rag_add_document	Add a text document (creates folder if needed)
rag_read	Retrieve the full extracted content of a document (KB + path)
rag_delete_document	Delete a document
rag_delete_kb	Delete an entire KB
rag_reindex	Trigger an immediate scan
rag_status	Index overview (KBs, documents, chunks)

Example calls

{
  "name": "rag_list_kbs",
  "arguments": {}
}
// → 3 KBs, 42 documents, 128 chunks

{
  "name": "rag_search",
  "arguments": { "query": "how to set up SSO", "kb": "infra", "top_k": 10 }
}
// → ranked chunks with source citations

{
  "name": "rag_add_document",
  "arguments": { "kb": "dev", "path": "notes/setup.md", "content": "# Setup\n…" }
}
// → added + indexed

rag_search

• query (required): natural-language search query.
• kb (optional): restrict to one knowledge base.
• top_k (optional, default 10): number of results.

rag_add_document

• kb (required): knowledge base name; the folder is created if needed.
• path (required): relative path in the KB (e.g. notes/architecture.md).
• content (required): text or Markdown content.

The document is extracted, chunked, embedded and indexed immediately.