Choose an SDK When You Need to Own the Runtime

A shell command starts your prototype. A scheduled service also needs lifecycle control, credentials, error handling and a way to inspect what happened after you left. That is a reason to evaluate an agent SDK.

The Claude Agent SDK provides a programmatic interface to an agent loop and tools. Inspect its supported permissions, hooks and deployment requirements before choosing it over a CLI wrapper or a simpler deterministic program.

The SDK is not a finished operating policy. You still decide which data the application may read, where it runs, which tools it can call and which effects require approval. Test those boundaries with disposable inputs and credentials scoped to the task.

Start with one bounded application behavior. Verify success, failure and cancellation, and retain the activity record. An SDK can remove implementation work; it does not transfer responsibility for the resulting system.