Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add AnastasiyaW/codex-claude-code-config --skill harness-designgit clone --depth 1 https://github.com/AnastasiyaW/codex-claude-code-configWrote this? Show the measurements
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.
[](https://agentmods.dev/skills/anastasiyaw/codex-claude-code-config/harness-design)<a href="https://agentmods.dev/skills/anastasiyaw/codex-claude-code-config/harness-design"><img src="https://agentmods.dev/badge/skills/anastasiyaw/codex-claude-code-config/harness-design/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/anastasiyaw/codex-claude-code-config/harness-design"><img src="https://agentmods.dev/badge/skills/anastasiyaw/codex-claude-code-config/harness-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium analysis-evasion · line 1 Suspicious Unicode normalization or mixed-script contentFix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
- medium Excessive Agency · line 16 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00180 | $0.02552 |
| Opus 5 | $0.00090 | $0.01276 |
| Sonnet 5 | $0.00036 | $0.00510 |
| Haiku 4.5 | $0.00018 | $0.00255 |
Grade A, and why
harness-design 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Multi-Agent Harness Design
Источники:
- Anthropic Engineering — "Harness design for long-running apps"
- OpenClaw-RL paper (arxiv 2603.10165) — personal agent verification
- DenisSergeevitch/repo-task-proof-loop — execution protocol with durable proof
См. также: references/proof-loop-research.md — детали paper + repo mapping
Когда нужен harness, а когда хватит solo agent
| Сигнал | Solo agent | Harness |
|---|---|---|
| Scope | Одна фича, bug fix, refactor | Full-stack app, multi-feature product |
| Длительность | Bounded work with direct evidence | Work that needs durable state, resumes, or independent evaluation |
| Качество | Baseline достаточно | Нужен polish, originality, craft |
| Стоимость | В рамках явного бюджета задачи | Бюджет и stop condition фиксируются для этой задачи |
| Проверка | Прямой task-appropriate proof | Независимая проверка и runtime proof, если требуются контрактом |
Правило: Evaluator оправдан когда задача за пределами reliable solo performance. Не фиксированное yes/no — зависит от complexity tier.
Архитектура: Three-Agent System
1. Planner (Планировщик)
- Превращает запрос пользователя в детальную, проверяемую спецификацию
- Сохраняет утверждённый scope, явные non-goals и существующие границы продукта
- Не добавляет AI-фичи, миграции стека или новые deliverables без запроса пользователя либо подтверждённой причинной необходимости
- НЕ over-specify реализацию — только what, не how
- Если AI-фичи уже входят в утверждённый scope, вписывает их в продукт органично
2. Generator (Генератор)
- Реализует фичи итеративно
- Включает self-evaluation перед handoff (но она ненадёжна — см. ниже)
- Работает в рамках Sprint Contract
3. Evaluator (Оценщик)
- Независимый от генератора — отдельный контекст, отдельный промпт
- Выбирает проверку по acceptance contract: unit/integration/runtime probe для сервисов, browser/UI проверку только для затронутого пользовательского пути
- Откалиброван через few-shot примеры
- Ловит то, что self-evaluation пропускает
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.
- yesterday Changed · -2 lines · +9 tokens per session bc44a79e4c04
- 9d ago First seen · 243 lines · 171 tokens per session scan A 93169dc6ba58
harness-design is a skill published in the GitHub repository AnastasiyaW/codex-claude-code-config (149 stars, last pushed today), licensed MIT. It adds 180 tokens to every session and 2,552 once invoked, about $0.0009 per session on Opus 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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