A project-based course on designing the environments, state, verification, and control systems that make Codex and Claude Code reliable.
What is a Harness? | EARENDIL
An agent harness is a piece of software that provides an environment for an AI model to operate within.
Harness engineering: leveraging Codex in an agent-first world
By Ryan Lopopolo, Member of the Technical Staff
Harness engineering: leveraging Codex in an agent-first world
By Ryan Lopopolo, Member of the Technical Staff
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.
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
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.
Codex harness · OpenClaw
Run OpenClaw embedded agent turns through the bundled Codex app-server harness
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
Diving into Claude Code's Source Code Leak
Engineer’s Codex is a publication about real-world software engineering.
Running an AI-native engineering org | Claude
How the Claude Code engineering team’s processes and structure changed once agentic coding became the default way of working.
Towards self-driving codebases · Cursor
We're making a part of our multi-agent research harness available to try today in preview.
Prompt Engineering Guide – Nextra
A Comprehensive Overview of Prompt Engineering
