Knowledge Share

One Open Source Project a Day (No. 227): Strands Agents Harness SDK — From Hand-Rolled Agent Loops to a Production-Ready Agent in One Call

Strands Agents (strands-agents/harness-sdk) is an open-source agent SDK from the AWS team, shipping both Python and TypeScript implementations. Its standout feature is Strands Harness — a fully assembled, production-grade agent you get from a single create_harness() call, with built-in context management, session persistence, long-term memory, skill loading, and multi-model support, while still returning a fully customizable native Agent object. 8,300+ Stars, Apache-2.0 License.