$ find your agent harness

A curated, verified, cross-vendor directory of AI agent harnesses — the runtime scaffolding that turns a model into an agent.

74 harnesses profiled · 9-axis capability schema · last verified 2026-07-08

1 of 74 harnesses · sorted by stars

Void · Glass Devtools (Y Combinator)

28,821 · high

MIT-licensed open-source VS Code fork positioned as the privacy-first Cursor alternative (direct BYOK to Claude/OpenAI/Gemini or local Ollama/DeepSeek/Qwen with no middleman, Agent/Gather/Chat modes, MCP, checkpoints), but development was paused in early 2026 — last binary June 2025, last code change August 2025 — and the GitHub repo is now archived, leaving maintenance to community forks.

IDE & desktopopen-sourcebyok✓ mcp✓ local models
harnesses.sh — the agent harness directory