n-n-code-skills: Instructions file for Codex

AGENTS.md

n-n-code-skills AGENTS.md is an instructions file for Codex, OpenCode from n-n-code/n-n-code-skills. It costs 1,022 tokens per session, scanned A, original, MIT.

Repository instructions for n-n-code/n-n-code-skills, a project that stores reusable skills for coding agents. They describe the repository layout, required skill files, naming rules, and documentation responsibilities.

In plain words
What is it for?
Use them when editing agent skills, AGENTS.md files, README.md, or validation scripts in that repository.
Why use it?
They give contributors shared rules for adding or changing skills without breaking the repository’s structure or published inventory.

Instructions file for CodexOpenCode

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

This is n-n-code/n-n-code-skills's own configuration. It tells Codex and OpenCode how to work on n-n-code-skills 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 n-n-code-skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to n-n-code/n-n-code-skills. 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/n-n-code/n-n-code-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/n-n-code/n-n-code-skills

Made for: Codex, OpenCode.

Wrote 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.

agentmods badge for n-n-code-skills AGENTS.md

README.md
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Your own site
<a href="https://agentmods.dev/instructions/n-n-code/n-n-code-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/n-n-code/n-n-code-skills/agents-md/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.

agentmods 80×15 button for n-n-code-skills AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/n-n-code/n-n-code-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/n-n-code/n-n-code-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,022 This file is loaded in full into every session.
When invoked 1,022 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 $0.01022 $0.01022
Opus 5.5 $0.00409 $0.00409
Sonnet 5.5 $0.00204 $0.00204
Haiku 4.5 $0.00102 $0.00102

Measured 2mo ago against content hash 4a9ba43d1a59, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

n-n-code-skills 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 · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Repo Purpose

This repository stores reusable agent skills. Most work should be limited to root documentation, .agents/skills/, and the validation scripts under scripts/.

Structure

  • Skills live in .agents/skills/<skill-name>/
  • Each skill must include SKILL.md
  • SKILL.md frontmatter must contain exactly name and description; the declared name must match the skill folder
  • Supporting files such as references/, scripts/, and assets/ are allowed when they directly serve the skill
  • README.md is the published skill inventory and routing guide; keep it aligned whenever a skill is added, removed, or retitled

Skill Taxonomy

README.md is the source of truth for the current skill inventory, family routing, and composition examples. Do not duplicate that catalog here.

  • Start with one principle skill for language- or discipline-specific work, add matching domain or project overlays, and add an orthogonal workflow skill only when the task needs that mode
  • A baseline overlay is the routine default; a canonical overlay is the stronger option for harder work in the same domain and should preserve the baseline's core expectations
  • A companion overlay adds an optional workflow without replacing its baseline
  • A process overlay governs workflow or enforcement; a template overlay is a pattern for repo-local adaptation
  • A system skill builds or installs a repo-owned system instead of guiding ordinary execution
  • Keep these relationships explicit when adding or revising skills so adjacent skills do not drift into overlapping jobs

Working Rules

  • Preserve the existing folder-based layout unless the task explicitly requires a structural change
  • Keep instructions concise, specific, and grounded in files that actually exist
  • Use the repo's role vocabulary consistently when naming or describing skills
  • Update only the skill folder and root docs relevant to the task
  • When adding or changing a skill, keep its trigger boundaries distinct from neighboring skills and update the relevant README.md family and defaults
  • Treat README.md and AGENTS.md as durable repo docs; do not add process or automation claims that the repository does not implement
  • Prefer small, targeted edits over broad repo rewrites
  • Author skills, examples, and templates independently. Keep external references when primary documentation, specifications, research, or tool evidence supports a concrete procedure, constraint, or maintenance decision
  • Obtain explicit user agreement before incorporating third-party material that requires additional licenses or notices; retain required notices for any such material that remains

Read the full file on GitHub · 121 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 Changed · +17 lines · +202 tokens per session 4a9ba43d1a59
  2. 2mo ago Changed · +10 lines · +63 tokens per session 2f1e37b97b38
  3. 2mo ago First seen · 94 lines · 757 tokens per session scan A 0591e7d5b540

Subscribe to this mod's changes

n-n-code-skills AGENTS.md is an instructions file published in the GitHub repository n-n-code/n-n-code-skills (4 stars, last pushed 5d ago), licensed MIT. It adds 1,022 tokens to every session, about $0.0041 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 2026-08-31.

Related

n-n-code-skills AGENTS.md compared with instructions from other repositories

n-n-code-skills AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
n-n-code-skills AGENTS.mdn-n-code/n-n-code-skillsInstructions file45d agoMITA1,022Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file275k2d agoMITA4,313Codex, OpenCode