Strands Agents releases Harness SDK, an open-source framework in Python and TypeScript for building custom, production-ready AI agent harnesses across any model and cloud.
Strands Harness SDK is an open-source framework designed to give developers end-to-end control when building production-grade AI agent harnesses in Python and TypeScript. Rather than enforcing rigid workflow abstractions, the SDK emphasizes a model-driven approach where foundation models drive reasoning, planning, and tool execution with minimal orchestration overhead. It provides modular primitives for agent execution loops, session state, memory management, and tool integrations across major LLM providers including Amazon Bedrock, OpenAI, Anthropic, Google, and Ollama.
While many agent frameworks trap developers in complex, brittle graph abstractions, Strands Harness SDK focuses on lightweight, model-driven primitives that give teams full control over their production runtime.
- –Delivers granular control over agent loops, context management, hooks, and tool execution in both Python and TypeScript.
- –Vendor-agnostic architecture prevents lock-in by supporting major cloud and local model providers, from AWS Bedrock to Ollama.
- –Acts as the flexible underlying engine beneath opinionated, pre-assembled harnesses for teams that need customized architectures.
- –Prioritizes token efficiency and reduced latency over heavy, multi-layered orchestration abstractions.
DISCOVERED
2h ago
2026-09-23
PUBLISHED
2h ago
2026-09-23
RELEVANCE