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Model Keys let you bring your own provider credentials (BYOK) or use the platform Phinite Key. Master Agent and Child Agent nodes select which model and key to use for LLM calls on the Agent Graph.
Save the Agent Graph before Build after changing model or key on a node. Permission: workspace.sidebar.byok.

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Where in the product

Model Keys workspace page

Model Keys — BYOK providers and Phinite Key

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Workspace keys

  1. Open Keys in the workspace sidebar (bottom section).
  2. Click Model Keys.
  3. Add a provider key or use the default Phinite Key card.
  4. Set which key is default for the workspace if prompted.

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Use on an agent node

  1. Open Graph Studio and select a Master Agent or Child Agent node.
  2. In the node drawer, choose model and provider settings.
  3. Pick a key that matches your BYOK setup.
  4. Save the Agent Graph before Build.
The Phinite Key uses platform-managed credentials. BYOK keys are stored per workspace and never embedded in the graph JSON.

Agent node

Drawer fields for prompts, tools, and model.

Graph Studio overview

Design Agent Graphs on the canvas.

Builds overview

Freeze graph and tool versions into Agent Builds.

Configuration overview

All configuration layers in one place.