harness-engineering: Instructions file for Codex

AGENTS.md

harness-engineering AGENTS.md is an instructions file for Codex, OpenCode from deusyu/harness-engineering. It costs 1,815 tokens per session, scanned A, original, MIT.

A set of repository instructions for documenting and practising harness engineering, a way of organizing an AI coding agent's work. It covers notes, experiments, progress, references, prompts, and automated consistency checks.

In plain words
What is it for?
Use it to navigate a harness-engineering study archive, record experiments and feedback, collect useful prompts, and check that linked progress information stays consistent.
Why use it?
It gives an agent a clear map of the learning repository and helps detect when related counts or records have drifted out of sync.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md; mentions Codex.

This is deusyu/harness-engineering's own configuration. It tells Codex and OpenCode how to work on harness-engineering itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything harness-engineering configures →

About the project

deusyu/harness-engineering is a learning archive about designing repositories, rules, tools, and feedback loops so AI coding agents can work reliably. It is for engineers studying and practicing this approach to agent-assisted software development. Its catalogue entries package parts of the project’s guidance as an agent skill and instruction.

deusyu/harness-engineering · 6,250 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to deusyu/harness-engineering. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/deusyu/harness-engineering/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/deusyu/harness-engineering

Made for: Codex, OpenCode.

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A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
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Per session 1,815 This file is loaded in full into every session.
When invoked 1,815 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01815 $0.01815
Opus 5.5 $0.00726 $0.00726
Sonnet 5.5 $0.00363 $0.00363
Haiku 4.5 $0.00181 $0.00181

Measured 2mo ago against content hash 10691915a665, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

harness-engineering AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Harness Engineering 学习档案

记录我学习「Harness Engineering」的完整过程:从概念理解到独立实践。

来源:OpenAI — Harness Engineering: Harnessing Codex in an Agent-First World

仓库结构

目录 内容 说明
concepts/ 概念笔记 原文核心概念的拆解与整理
thinking/ 独立思考 自己的理解、质疑、延伸思考
practice/ 动手实践 小项目实验,验证文章中的方法论
feedback/ 反馈记录 实践中的踩坑、修正、迭代心得
works/ 作品输出 可展示的成果(文章、工具、模板等)
tools/ 工具具像化 降低 6 维复杂度的杠杆库(带主张,不是 awesome-list)
prompts/ 提示词积累 学习过程中验证有效的提示词
references/ 外部资源 相关文章、仓库、工具的索引

学习路线(进度)

  • Phase 1:理解核心概念(concepts/,8 篇)
  • Phase 2:形成自己的观点(thinking/,11 篇,持续中)
  • Phase 3:选一个小项目实践(practice/,1 个 Ralph Demo)
  • Phase 4:记录反馈迭代(feedback/,1 篇,持续中)
  • Phase 5:输出可展示的作品(works/,40 篇翻译 + 1 篇原创 + 2 篇外部中文收录)

进度详情以人类向 README.md 的"学习路线"段为准;本节是给智能体的快照。

导航

每个子目录都有自己的 AGENTS.md,说明该目录的用途、内容组织方式和写作约定。 从任何一个目录开始,都能找到下一步该看什么。

机械化检查

scripts/check-consistency.sh 守护"漂移"问题:

  • C1 — references/articles.md 编号 1..N 连续
  • C2 — N 与下游 4 处声明同步(README badge × 2、prompts/deep-research-tracker.md 头部、references/AGENTS.md 概览)。文件含独立行 <!-- check-consistency: skip-count --> 时豁免
  • C3 — concepts/、thinking/、feedback/ 的 *.md 实际数与 README 中"X 篇"声明一致
  • C4 — works/*-translation.md 文件数 ≡ 翻译计数所有声明(badges、<details> 摘要、Phase 5 注释、本文件 Phase 5 快照、READMEs 表格行数)
  • C5 — README 结构树中 concepts/ 子树的 item 行数 ≡ concepts/*.md 文件数(防止"计数对了但树漏了")
  • C6 — references/articles.md 末尾"不计入 N 篇"中的 N ≡ C1 权威值
  • C7 — 三脉络 per-track 计数(脉络一/二/三)在 4 处下游声明保持一致:READMEs 资料库表、references/AGENTS.md 三脉络小标题、prompts/deep-research-tracker.md 三脉络明细
  • C8 — 翻译流水线本地守卫:translate/<...>/sources/<slug>/source-full.md 存在时,对应 01-analysis.md 不得再声称"仅摘要页 / 建议补抓全文"。translate/ 已 gitignore,CI 与干净 clone 自动 SKIP,仅本地有过程稿时触发
  • C9 — concepts/ / thinking/ / feedback/ 正文不得裸写文库计数("N 篇文章 / N 篇翻译 / N 大概念");历史性提法须带"写作时点 / 当时 / 此前 / 首批 / 首轮 / 截至 / 快照"限定词,否则去数字改链 references/articles.md
  • C10 — 图片保真(纯本地、零网络):每篇 works/*-translation.md 的 frontmatter 必须声明 sourceFigureCount(缺失即 FAIL;null = 原文不可得、未审计 → SKIP;数字 N → 正文嵌图数须 ≥ N),且所有本地嵌图路径(imgs/...)必须在磁盘上存在
  • C11 — markdown 表格形状:README ×2、references/AGENTS.md、references/articles.md、works/AGENTS.md 里每一行表格的单元格数须与表头一致
  • C12 — 条目字段完整性:references/articles.md 每个 ### N. 编号条目必须带 作者: 与 日期: 字段
  • C13 — 零插图声明须留痕:C10 只能证伪"多报"(嵌图数 < 声明数才 FAIL),因此 sourceFigureCount: 0 在本地永远无法被证伪——不管你有没有真去核对原文,它都是绿的。2026-07-27 就是这个洞放行了一个假 0(原文实有 4 张配图)。C10 刻意零网络、无法回查原文,所以改为要求留痕:声明 0 的译文必须同时带 sourceFigureAudit 字段,值里要有 YYYY-MM-DD 核对日期,写清怎么核对的、结论是什么。null 仍然 SKIP——它本来就自陈未审计
  • C14 — 文档站防漂移:VitePress 站点(部署到 harness.dyu.sh)的侧边栏与首页统计一律由 .vitepress/sidebar.mjs 在构建时从文件系统生成,不手写。三条不变量:站点源码(index.md、.vitepress/)不得出现裸计数("N 篇"),数字只能来自 computeStats();每个一等内容文件必须在生成的侧边栏中恰好出现一次;仓库内禁止任何 symlink——Vite 会解引用 public/ 下的软链、图片管线会读取链接目标,一条软链即可把仓库外文件带进公开产物(后两条经 node .vitepress/sidebar.mjs --verify 执行)。构建产物侧另有 scripts/verify-dist.mjs 断言页面与 .md 副本一一对应、副本链接可达、dist 无 symlink。站点脚手架不存在时 SKIP;node 不可用时 verify 半边 SKIP、裸计数 grep 照常执行

Read the full file on GitHub · 59 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 59 lines · 1,815 tokens per session scan A 10691915a665

Subscribe to this mod's changes

harness-engineering AGENTS.md is an instructions file published in the GitHub repository deusyu/harness-engineering (6,250 stars, last pushed 6d ago), licensed MIT. It adds 1,815 tokens to every session, about $0.0073 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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