# HarnessKit
> Independent picks for the AI agent harness layer: what a harness is, how the nine real options (Claude Code, Codex, OpenCode, Qwen Code, DeepSeek Harness, Goose, Zed Agent, OpenHands, Pydantic AI Harness) compare, a 60-second chooser, and a starter kit built from the parts that survive model upgrades.

## Pages
- https://harnesskit.app/ : the four-layer stack (model / harness / framework / platform) and the comparison table
- https://harnesskit.app/choose : interactive chooser
- https://harnesskit.app/harnesses/{slug} : one profile per harness with license, stack, models, best-for and weakness
- https://harnesskit.app/kit : free starter kit (AGENTS.md template, permissions checklist, local-model config)

## Sources
Profile facts: winder.ai "A Comparison of AI Agent Harnesses in 2026" (Aug 20, 2026), vendor repos/docs. Star counts as of Aug 19, 2026 unless noted. Not affiliated with any harness maker.