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harness-sdk

Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript — any model, any cloud.

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mcp-sdkPythonharnesssdkllm-agentgenerative-aiai-agentsagenticstrands-agentsagentic-aiopenaiagentsaibedrockagent-frameworkmulti-agent-systemsllmpythontypescriptanthropicnodeautonomous-agentsmcp

harness-sdk is an open-source SDK from strands-agents for building an agent harness and controlling it end-to-end, available in Python and TypeScript. It is model- and cloud-agnostic, with topics indicating support for MCP, Anthropic, OpenAI, and Bedrock, and it ships agents.md, .claude directory, and claude.md files.

Reach for it when you want a single SDK to build and control production AI agents across models and clouds in Python or TypeScript.

Use it to

  • Build an agent harness in Python or TypeScript
  • Control agents end-to-end in production
  • Integrate MCP-based tooling
  • Target Anthropic, OpenAI, or Bedrock models
  • Set up agent projects with agents.md and claude.md conventions

For Developers building production AI agent systems

Role
mcp-sdk
Language
Python
Licence
Apache-2.0
Forks
1,149
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499
Last push
2026-09-17
Latest release
python/v0.1.0 · 2025-05-16
topicsagent-frameworkmcpsdkllmpythontypescript