Crate caliban_provider_vertex 

Google Vertex AI provider for the caliban agent harness.

Thin wrapper around caliban_provider_anthropic::AnthropicProvider<VertexTransport> that adds:

• A VertexConfig with a from_env constructor.
• An AuthRefresh background task that periodically refreshes the GCP bearer token via gcp_auth::TokenProvider.
• A refresh_models (the Provider trait’s live-discovery hook) that calls https://{region}-aiplatform.googleapis.com/v1/publishers/anthropic/models; the sync list_models returns the vendored fallback.
• name() -> "vertex" so the model router and telemetry attribute it correctly.

See docs/adr/0034-bedrock-and-vertex-providers.md and docs/superpowers/specs/2026-05-24-bedrock-vertex-providers-design.md.

Re-exports

pub use auth::AuthRefresh;

pub use config::VertexConfig;

pub use error::VertexError;

Modules

auth

Background GCP credential-refresh task.

config

Configuration for the Vertex provider.

error

Adapter-level error type.

models

Vertex model catalog + control-plane list helper.

Structs

VertexProvider

Provider that talks to Anthropic Claude on Google Vertex AI.