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In Graph Studio, agent nodes retrieve from collections, not from individual uploaded files. Open the node drawer RAG tab to attach collections and tune retrieval.
Phinite agent RAG tab with Attach collection and asif-test attached

Node RAG tab — Attach collection and Knowledge list

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Attach a collection

  1. Open the Agent Graph in Graph Studio.
  2. Select a Master Agent or Child Agent node (double-click if the drawer is closed).
  3. Open the RAG tab.
  4. Click Attach collection.
  5. Select one or more workspace collections, then confirm.
  6. Click Save on the Studio toolbar.
Attached collections show under Knowledge with a rag badge and on the node card as a folder label.
The drawer copy reads Ground answers in your collections — the agent retrieves relevant chunks before responding, not only what the model already knows.

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Threshold and top k

On the RAG tab, set retrieval controls for the node: Raise top k when answers need broader context; raise threshold when you want only strong matches. Changes persist on the node when you commit the sliders/steppers — still Save the graph before Build.

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Detach or view

  • Use View on a collection row to open collection details.
  • Remove a collection from the node when it should no longer ground that agent.
  • Manage sources and chunking on BUILD → RAG Collections (connectors).

RAG overview

Workspace collections and chunking.

Node library

Agent node drawers: Details, RAG, Tools, Variables.