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open-harness

open-harness

New AI Agent Framework Open Source

Lightweight, composable building blocks for creating capable AI agents. Built on Vercel AI SDK.

Free
Pricing Model
Lightweight, composable building blocks for creating capable AI agents. Built on Vercel AI SDK.

open-harness at a Glance

Pricing
Free
How you use it
TypeScript SDK installed with npm
Who it's for
Developers building AI agent products
Works with
Vercel AI SDK OpenAI Anthropic Google

open-harness Key Features

  • Composable agent primitives
  • Context compaction
  • Hierarchical subagents
  • MCP integration
  • Tool permissions

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