AI SDK Harnesses
AI SDK Harnesses
The harness section covers the AI SDK harness abstraction: a uniform API for running established agent harnesses such as Claude Code, Codex, and Pi.
Overview
Understand how harnesses relate to providers, models, agents, streams, and UI primitives.
HarnessAgent
Create sessions, run turns, manage sandbox lifecycle, and resume harness conversations.
Tools
Use built-in harness tools, host-executed AI SDK tools, approvals, and sandbox-aware execution.
Skills
Provide reusable instruction bundles to harness runtimes.
Harness Adapters
Learn about the available harness adapters.
Workflow Utilities
Run HarnessAgent turns as durable Workflow DevKit workflows.
UI
Stream harness output to useChat and build chat routes that preserve harness sessions.
Terminal UI
Run HarnessAgent in @ai-sdk/tui with a small session adapter.
