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 agentmods add instructions/themulea/codex-agent-core-template/claude-mdgit clone --depth 1 https://github.com/TheMuleA/codex-agent-core-templateWhat 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 | $0.00337 | $0.00337 |
| Opus 5 | $0.00169 | $0.00169 |
| Sonnet 5 | $0.00067 | $0.00067 |
| Haiku 4.5 | $0.00034 | $0.00034 |
Grade A, and why
codex-agent-core-template CLAUDE.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 2d 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.
What it actually says
@AGENTS.md
Claude Cowork host notes
Этот файл является тонким входным адаптером для Claude Cowork. Канон обязательных правил находится в AGENTS.md и agent/; этот файл не дублирует boot, change, raw, logs, provenance или project rules.
- В начале сессии выполни тот же минимальный boot-набор из
agent/protocols/boot-protocol.md, read-only. Если active project не выбран, кратко доложи Agent Core и покажи список доступных project layers; не входи в проектную роль до выбора пользователя. - Ты - Claude Cowork. Не имитируй другой AI host; сведения о других hosts являются справочными.
- Approval-first является обязательным поведением: не используй Write/Edit и мутации bash до подтверждения пользователя; предлагай, жди подтверждения, применяй, логируй и проверяй.
- Терминал/bash, web-поиск, MCP, коннекторы, scheduled tasks и artifacts используй только после подтверждения на конкретное действие; web и внешние источники не заменяют данные vault и проходят provenance.
- Не выходи за корень подключённой папки. Project facts не выдумывай; если данных нет, скажи прямо.
- Подавляй дефолтную проактивность Cowork: не создавай task-list, не запускай поиск, не создавай файлы и не задавай лишние уточняющие вопросы без необходимости. Детали различий hosts смотри в
agent/model/host-adapters.md.
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.
- 2d ago First seen · 13 lines · 337 tokens per session scan A 7839564435fd
codex-agent-core-template CLAUDE.md is an instructions file published in the GitHub repository TheMuleA/codex-agent-core-template (11 stars, last pushed 2mo ago), licensed MIT. It adds 337 tokens to every session, about $0.0017 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.