Feature request
Let each Claude agent-host session pick a model whose provider decides its transport, instead of pinning the whole host to a single transport:
anthropic-provider models route to the native Anthropic SDK.copilot (and any unknown) provider routes to the Copilot-CAPI proxy.
This mirrors how the Codex provider already behaves.
Motivation
Today a Claude host is pinned to one transport, so a user can't mix a native-Anthropic model and a Copilot-routed model across sessions. Per-session provider selection removes that limitation and brings Claude in line with Codex.
Proposed behavior
- Provider-qualified model ids (
@provider=anthropic:… / @provider=copilot:…); bare/legacy ids resume on the host default transport (no migration needed).
- Merged catalog fetched from both native and proxy sources, each self-gated on its own credential/native-setup; the picker groups rows by vendor ("Anthropic" / "Copilot").
- Per-session transport resolution at materialize time from the selected model's provider.
- Live switching — selecting a model on the other transport re-materializes the session's subprocess on the next send; same-transport model changes hot-swap in place.
- Lazy Copilot sign-in — the Copilot resource is advertised
required: false; sign-in defers to first send of a Copilot-routed model (matches Codex).
Addressed by #329331.
Feature request
Let each Claude agent-host session pick a model whose provider decides its transport, instead of pinning the whole host to a single transport:
anthropic-provider models route to the native Anthropic SDK.copilot(and any unknown) provider routes to the Copilot-CAPI proxy.This mirrors how the Codex provider already behaves.
Motivation
Today a Claude host is pinned to one transport, so a user can't mix a native-Anthropic model and a Copilot-routed model across sessions. Per-session provider selection removes that limitation and brings Claude in line with Codex.
Proposed behavior
@provider=anthropic:…/@provider=copilot:…); bare/legacy ids resume on the host default transport (no migration needed).required: false; sign-in defers to first send of a Copilot-routed model (matches Codex).Addressed by #329331.