Google Open-Sources Harness², an Agent Framework That Rewrites Its Own Config

Google Research open-sourced Harness² (23.6k stars on GitHub) along with a nine-page PDF on "Harness Engineering." The framework treats agents as Model plus Harness—system prompts, guardrails, memory and more—and can automatically rewrite its own harness for each new task.

2026-11-11 ~ 2026-11-13 · 2 related posts

• Google open-sources Harness², an agent that rewrites its own setup per task — Arindam_1729 · 2026-11-11
• Google open-sources Harness²: Agent = Model + Harness, recursive agent harnessing framework — 2C_ornot2C · 2026-11-13