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Upload documents for RAG: formats, limits, and tips

Which file types work, how the 12 MB limit applies, and how to get cleaner answers from your own sources.

By The MasterNode Team · Guides

Retrieval-augmented generation (RAG) lets agents cite your contracts, specs, and reports instead of guessing. Uploads are per-tenant and scoped to the conversation or workspace rules you've enabled.

Supported formats

  • Documents: PDF, DOCX, PPTX, XLSX, TXT, MD, HTML
  • Data: CSV, JSON
  • Images: PNG, JPG (for vision-capable models)

Size and quality

Each file can be up to 12 MB. Split very large exports into logical chunks — quarterly reports, per-product folders — so retrieval returns the right slice instead of a noisy mega-document.

Structured headings, tables, and consistent filenames improve chunk boundaries. A one-page tone guide beats a 200-page dump when you only need voice and terminology.

When RAG runs

Attach files in chat or enable memory files for a thread. The planner decides which subtasks need document retrieval versus open-ended generation. Live web results still override stale file content when facts conflict — we surface the disagreement instead of blending silently.

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