Anthropic Long-Running Agent Harness

Anthropic’s long-running agent harness is the foundation I built on top of. The pattern—initializer, fresh-context sessions, regression testing, and explicit progress updates—is exactly what you need if you want reliability instead of one-shot demos that break the moment the project grows.

Pros

+Battle-tested pattern for long-running agent workflows
+Emphasizes fresh-context sessions and explicit state management
+Improves reliability with regression testing and structured progress tracking

Cons

-Out of the box it doesn’t cover the full “engineer tool belt” (Slack/Linear/GitHub) without extensions
-Requires engineering effort to adapt to your specific workflow