I tried pi in March, talked a coworker out of it in July, and rebuilt my entire agent stack on it in August. The thing I'd missed was that everything I'd been building around my harness could live inside it.
pi/packages/agent/docs/harness-v2.md at harness-v2/j4 · earendil-works/pi
AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI - earendil-works/pi
Skills, forks, and self-surgery: how agent harnesses grow
Claude Code, NanoClaw, and Pi take radically different approaches to harness extensibility. The tradeoff is always safety vs. agent agency.
What is a Harness? | EARENDIL
An agent harness is a piece of software that provides an environment for an AI model to operate within.
Building pi in a World of Slop — Mario Zechner
Welcome to Learn Harness Engineering | Learn Harness Engineering
A project-based course on designing the environments, state, verification, and control systems that make Codex and Claude Code reliable.
Extreme Harness Engineering for Token Billionaires: 1M LOC, 1B toks/day, 0% human code, 0% human review — Ryan Lopopolo, OpenAI Frontier & Symphony
We shed light on OpenAI's first Dark Factory for the first time.
DeepSeek on Twitter / X
🧩 DeepSeek Harness v0.1 is now available in Developer Preview!🔹 We’re opening it up to developers building agent harnesses worldwide and open-sourcing the codebase in MIT license.🔹 Powered by the Cordis meta-framework, DeepSeek Harness is an agent harness built around one…— DeepSeek (@deepseek_ai) August 13, 2026
What is an Agent Harness? | Rubric Labs
A harness is the software that translates a model into a system that can affect its environment. Agent = Model + Harness.
The Anatomy of an Agent Harness
Learn how agent harnesses transform AI models into autonomous work engines. Explore core components: filesystems, sandboxes, and memory.
NIST faces crisis over Paul Christiano hire | VentureBeat
NIST faces turmoil as staff consider quitting over Paul Christiano's expected appointment to a role at the US AI Safety Institute, sources say.
I Hated Every Coding Agent, So I Built My Own — Mario Zechner (Pi)
Michael Livs on Twitter / X
introducing pi-psst 🤫, your agent uses secrets without ever seeing them. no more scrubbing for @badlogicgames!secrets are injected as env vars to bash tool, scrubbed from all tool output, stored in local encrypted vault. the agent knows what's available but never sees a value.… pic.twitter.com/LB4RA5p4wF— Michael Livs (@micLivs) April 6, 2026
DeepSeek Harness developer preview: Everything is a plugin
DeepSeek Harness is now available in developer preview to developers building agent harnesses worldwide, with the source code released at the same time. Every agent capability is implemented as a plugin that can be swapped or recomposed.