# Knowledge Base

Canonical page: `https://nanthai.tech/features/knowledge-base`

Tier: Pro

Upload reference material once and pull it into any conversation.

Add PDFs, documents, and spreadsheets to your knowledge base. Attach them to chats or scheduled jobs so your AI always has the context it needs.

## How it works

1. **Upload your documents** — Drag and drop PDFs, Word documents, spreadsheets, or text files into your knowledge base. They're processed and stored securely.
2. **Attach to conversations** — When starting a chat or configuring a persona, attach one or more knowledge base documents. The AI can reference them as context.
3. **Ask questions against your data** — Ask the AI about your uploaded documents. It can find specific information, summarise sections, compare documents, and answer questions grounded in your data.

## What you can do

- **Upload any document** — Support for PDF, DOCX, XLSX, and TXT files. Upload once and reference from any conversation or task.
- **Attach to chats** — Pin documents to specific conversations. The AI has access to their content as additional context for every message.
- **Cross-reference documents** — Ask the AI to compare information across multiple uploaded files. Find inconsistencies, gaps, or patterns.
- **Combine with web search** — Reference your knowledge base alongside web search results. Ground external research in your private documents.
- **Per-persona access** — Control which personas can access your knowledge base. A project manager persona sees project docs; a code reviewer sees technical specs.
- **Use in scheduled tasks** — Automated pipelines can reference your knowledge base. Weekly reports can pull from uploaded data sources.
- **Document management** — View, rename, and remove documents from your knowledge base at any time. See which chats and tasks reference each file.
- **Always available** — Your knowledge base syncs across all your devices. Upload on your phone, reference on your desktop.

## Perfect for

- Uploading a product requirements document and asking the AI to summarise key features, identify gaps, or suggest improvements.
- Attaching company guidelines to a writing persona so every response follows your organisation's style and tone.
- Uploading financial reports and asking questions like "What was our Q3 revenue?" or "Compare Q2 and Q3 margins."
- Building a scheduled task that references your knowledge base to produce weekly status reports grounded in actual project documentation.

## Related features

- Memories (`/features/memories`)
- Personas (`/features/personas`)
- Automated Tasks (`/features/automated-tasks`)