What does a minimal but realistic durable agent look like when I first run Catalyst locally?

A minimal durable agent starts as a single workflow with two to three steps, such as an LLM call followed by a conditional API action. Catalyst captures each step’s state automatically, so progress survives restarts. The agent focuses on demonstrating deterministic replay of decision logic alongside probabilistic LLM outputs. Boundary: Durable execution never guarantees exactly-once side effects, so idempotency tokens remain your responsibility.