condensate A model name, an engine, and an account identify different parts of a request. The model specifies what generates the answer. The engine runs the session. The account supplies provider access.
Configure an account
Use the account setup surface in the running application or the runtime's supported login flow. Store provider credentials in the configured account system, outside the checkout. Do not paste token values into workspace JSON, documentation, or task briefs.
The credential broker and runtime account routes handle account access and refresh. Login modes vary by provider; the existence of a provider transport does not guarantee your subscription permits every API feature or model.
Check a real turn
Reading an account record or starting a server confirms configuration, not model access. Verify the selected account with a small real turn and inspect its result. That check consumes provider usage.
Route a model request
The engine's ModelRouter resolves configured profiles into engine, model, effort, thinking, and failover settings. The routing document is schema-validated. A model and engine mismatch is rejected before the session is built.
Failover is conditional on the classified failure and configured policy. Do not assume that every error will switch models or that switching the default account changes an already-materialized session.
Diagnose the correct layer
| Symptom | Check |
|---|---|
| Account listed, but provider refuses | Actual account credentials and provider response |
| Model rejected before a turn starts | Engine/model compatibility and workspace model policy |
| Another account becomes default, old task unchanged | The existing session's binding |
| Task changes models after failure | Failure classification and configured fallback chain |
Inspect the available models
The runtime exposes its completion model catalog:
curl -fsS http://127.0.0.1:4741/v1/models
The returned catalog describes this runtime's completion surface. Access still depends on the configured account. Use the application's model picker and inspect an actual turn when configuring durable agent tasks.