icn: Skill for Codex

.codex/skills/icn-kernel-app-separation-extraction/SKILL.md

icn-kernel-app-separation-extraction is a skill for Codex from InterCooperative-Network/icn. It costs 35 tokens per session (448 once invoked), scanned A, original, AGPL-3.0.

A code-refactoring guide for separating applications from a shared operating-system kernel. It focuses on creating boundaries between parts of the code while keeping existing behavior.

In plain words
What is it for?
Use it when extracting code across boundaries or adding a meaning firewall, a layer that prevents unrelated parts from depending directly on each other.
Why use it?
It helps reduce dependencies between kernel and application code, making changes safer and easier to isolate.

Skill for Codex

Written for Codex: agents/openai.yaml present.

This is InterCooperative-Network/icn's own configuration. It tells Codex how to work on icn 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 icn configures →

Reuse

Borrowing it

Nothing to install: this file belongs to InterCooperative-Network/icn. 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/InterCooperative-Network/icn/main/.codex/skills/icn-kernel-app-separation-extraction/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/InterCooperative-Network/icn

Made for: Codex.

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 icn-kernel-app-separation-extraction

README.md
[![agentmods](https://agentmods.dev/badge/skills/intercooperative-network/icn/icn-kernel-app-separation-extraction.svg)](https://agentmods.dev/skills/intercooperative-network/icn/icn-kernel-app-separation-extraction)
Your own site
<a href="https://agentmods.dev/skills/intercooperative-network/icn/icn-kernel-app-separation-extraction"><img src="https://agentmods.dev/badge/skills/intercooperative-network/icn/icn-kernel-app-separation-extraction.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 448 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00035 $0.00448
Opus 5 $0.00017 $0.00224
Sonnet 5 $0.00007 $0.00090
Haiku 4.5 $0.00003 $0.00045

Measured 7d ago against content hash c34b486895d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

icn-kernel-app-separation-extraction 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 7d 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.

.codex/skills/icn-kernel-app-separation-extraction/SKILL.md · 63 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 7d ago First seen · 63 lines · 35 tokens per session scan A c34b486895d6

Subscribe to this mod's changes

icn-kernel-app-separation-extraction is a skill published in the GitHub repository InterCooperative-Network/icn (10 stars, last pushed today), licensed AGPL-3.0. It adds 35 tokens to every session and 448 once invoked, about $0.0002 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 2026-08-31.