What is skills CLAUDE.md?

Project instructions for Nacif Skills, a collection of folders containing reusable agent skills. Each skill has a `SKILL.md` file and may include reference documents, scripts, or assets.

Creating, editing, checking, and publishing skills in the repository, including following its workflow and marketplace conventions.

They identify the authoritative contribution rules and explain how skills are organized, validated, and distributed.

How nacif-software/skills configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nacif-software/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/nacif-software/skills/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/nacif-software/skills

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/nacif-software/skills/claude-md/github.svg)](https://agentmods.dev/instructions/nacif-software/skills/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/nacif-software/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/nacif-software/skills/claude-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/nacif-software/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/nacif-software/skills/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,098 This file is loaded in full into every session.

When invoked 1,098 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.

Model	Per session	Once invoked
Fable 5.1	$0.01098	$0.01098
Opus 5.5	$0.00439	$0.00439
Sonnet 5.5	$0.00220	$0.00220
Haiku 4.5	$0.00110	$0.00110

Measured 2mo ago against content hash 3c970ff0beb2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skills 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 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.

CLAUDE.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

What this repo is

Nacif Skills is a collection of agent skills — each skill is a folder under skills/ with a SKILL.md (frontmatter + prose) plus optional references/, scripts/, and assets/. Skills are distributed straight from GitHub via npx skills and as a Claude Code plugin marketplace (.claude-plugin/marketplace.json).

The primary deliverable is the content of each SKILL.md and its supporting docs. Check README.md and CONTRIBUTING.md for the current install/distribution story, and docs/ for the suite model.

Where the authoritative guidance lives

CONTRIBUTING.md — how to scaffold, write, name, and test a skill; the required SKILL.md sections.
docs/architecture.md — the suite model: skill types, the default workflow graph, and how skills relate.
docs/subagents.md — delegation and context rules.
docs/workflows/<workflow>.md — per-workflow behavior and artifact contracts.
docs/decisions/ — numbered ADRs; read the relevant one before changing suite-level behavior.
skills/example-skill/ — the annotated template to copy when starting a new skill.

Validating a skill

Skills are prose contracts rather than compiled code, so validation is behavioral:

claude plugin validate .                 # validate the marketplace manifest
npx skills add ./skills/<skill-name>     # install one skill into a test project and dogfood it

To confirm a skill works, install it and give an agent a task that should trigger it — verify it activates and produces the promised artifact. Match whatever build/lint/test tooling exists at the time by inspecting the repo (package manifests, CI config, docs/) rather than assuming.

The two skill types

Every skill is either:

Workflow skill — owns an end-to-end user journey with user-facing gates and durable artifacts (e.g. design-feature, plan-implementation, execute-plan, review-pr). It decides the next phase and asks the user to choose.
Discipline skill — enforces one reusable habit used inside workflows; stays small and never owns the full journey (e.g. context-briefing, task-dispatch-loop, verification-gate).

Read the full file on GitHub · 52 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.

2mo ago First seen · 52 lines · 1,098 tokens per session scan A 3c970ff0beb2

Subscribe to this mod's changes

skills CLAUDE.md is an instructions file published in the GitHub repository nacif-software/skills (2 stars, last pushed 17d ago), licensed MIT. It adds 1,098 tokens to every session, about $0.0044 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.

skills CLAUDE.md next to 6 instructions from other repositories
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skills: Instructions file for Claude Code