Per-agent provider overrides

For every agent in a workflow, Cerevisor picks the provider in this order:

1. The agent's own provider, if you set one. This always wins.
2. The workflow's provider, if you set one.
3. The library default (the entry marked as default).
4. The first provider that is switched on, if nothing else is set.

This means you can mix providers within one workflow without much ceremony.

Three ways to set an override

1. The brain medallion on the agent card

Every agent has a small circular medallion at the bottom-right of its portrait: the "brain" badge. Its gradient color = the resolved provider's accent.

• Click to open the Provider & Model picker for this agent.
• Right-click to clear the override (revert to inherited).
• Drag a provider card from the Providers Dock onto the medallion to assign.

2. The Agent Config popup

Open Agent Config → Provider field. A chip-style picker shows all library providers plus an Inherit chip showing what the resolved provider would be without an override.

3. The Providers Dock

The dock lives in the right sidebar, below the Skills panel. Each library entry shows as a draggable gradient card. Drop on an agent's brain medallion to assign.

Common mixed-provider patterns

Senior + reviewer pair

• A research agent on your most capable model (best synthesis).
• A reviewer agent on a small, fast model (quick, cheap critique).

Saves money without losing the senior agent's quality on the main output.

Sensitive data path

• Public-data agents on Anthropic.
• Sensitive-data agents on a local Ollama model (so the data never leaves your machine).

Subscription-amortized writers

• Researcher and reviewer on Anthropic (pay per call).
• Writer on Codex CLI (free under your ChatGPT subscription).

Most expensive workflow component runs against the subscription you're already paying for.

Cloud-resilient long runs

• Most agents on a fast cheap provider locally.
• The one agent that takes 20 minutes on Cursor cloud (survives a laptop sleep).

Switching providers across the workflow

A workflow-level override sets the default for every agent in the workflow that doesn't have its own per-agent override. Useful when you want to try the same workflow against a different provider, e.g. swap from Anthropic to OpenAI for a budget test.

Set it in Settings → Workflow → Provider override chip picker.

What happens to skills when you mix providers

Before a run, Cerevisor checks each agent's skills against that agent's provider. If you assign a skill that doesn't work with the provider the agent ends up on, the run is blocked with a clear error. See Skill compatibility with providers.

This is the main reason per-agent overrides are useful: you can keep specialty skills on the provider that supports them while running the rest of the workflow elsewhere.

What the Providers Dock looks like

A vertical strip of provider cards, each rendered as a gradient pill. The gradient is the provider's accent (Anthropic and Claude Code = warm orange; Gemini and Antigravity = Google blue to purple; OpenAI-compatible = green; Codex = gray; Cursor = slate). One has a small "default" star icon.

Drag any card onto an agent's brain medallion to assign. A halo pulse animation confirms the change.

The dock is resizable, drag its top edge to grow it at the expense of the Skills panel above. See Reference → Interactions.