MCP Tools Reference

Lore DB exposes 18 MCP tools when connected. Here’s the complete reference.

Document tools

`create_doc`

Create and store a document. By default it is added to your Personal library. Optionally specify a library_id to add it to a specific library. Long documents are automatically split into overlapping chunks for better search coverage.

Parameter	Type	Required	Description
`document_name`	string	Yes	Title of the document
`document_content`	string	Yes	Markdown content
`library_id`	string	No	Target library (defaults to Personal)
`restricted`	boolean	No	Mark as restricted access

`read_doc`

Read a specific document from Lore DB. Returns the full title and content.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document

`update_doc`

Update an existing document, replacing the current content. Chunks and embeddings are automatically regenerated.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document
`document_content`	string	Yes	New markdown content

`delete_doc`

Delete a document from Lore DB permanently.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document

`verify_doc`

Mark a document as verified — bumps its verified_at timestamp without changing content. Freshly verified documents rank higher in search.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document

Search & AI tools

`search_doc`

Hybrid search (semantic similarity + keyword matching + freshness ranking). Returns ranked results with id, title, and score.

Parameter	Type	Required	Description
`document_query`	string	Yes	Natural language search query
`library_id`	string	No	Scope to a specific library
`system_id`	string	No	Scope to a specific system

`ask_doc`

Ask a question and get an AI-generated answer based on your documents. Uses RAG: retrieves relevant documents via hybrid search, then generates an answer grounded in their content.

Parameter	Type	Required	Description
`question`	string	Yes	Natural language question
`library_id`	string	No	Scope to a specific library
`system_id`	string	No	Scope to a specific system

Library tools

`list_libraries`

List all libraries the user is a member of. Shows which libraries are active (included in search/ask).

No parameters.

`create_library`

Create a new library. The caller becomes the owner.

Parameter	Type	Required	Description
`name`	string	Yes	Library name
`description`	string	No	Library description

`add_doc_to_library`

Add a document to a library. The document must be accessible to you.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document
`library_id`	string	Yes	UUID of the library

`remove_doc_from_library`

Remove a document from a library. Requires editor or owner role.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document
`library_id`	string	Yes	UUID of the library

`move_doc_between_libraries`

Move a document from one library to another. Requires editor/owner role in both libraries.

Parameter	Type	Required	Description
`document_id`	string	Yes	UUID of the document
`from_library_id`	string	Yes	Source library UUID
`to_library_id`	string	Yes	Destination library UUID

System tools

`list_systems`

List all systems the user is a member of. Shows which systems are active.

No parameters.

`create_system`

Create a new system (a grouping of libraries). The caller becomes the owner.

Parameter	Type	Required	Description
`name`	string	Yes	System name
`description`	string	No	System description

`add_library_to_system`

Add a library to a system. Requires editor or owner role in the system, and membership in the library.

Parameter	Type	Required	Description
`system_id`	string	Yes	UUID of the system
`library_id`	string	Yes	UUID of the library

`remove_library_from_system`

Remove a library from a system. Requires editor or owner role in the system.

Parameter	Type	Required	Description
`system_id`	string	Yes	UUID of the system
`library_id`	string	Yes	UUID of the library

`reindex_documents`

Re-chunk and re-embed all documents. Admin only. Run this after deploying chunking changes or changing the embedding model. This is a heavy operation.

No parameters. Requires admin access.

Use list_libraries and list_systems to discover IDs, then pass them to search_doc or ask_doc to scope your queries.