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/mdelapenya/coding-skills/claude-mdgit clone --depth 1 https://github.com/mdelapenya/coding-skillsWrote 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/instructions/mdelapenya/coding-skills/claude-md)<a href="https://agentmods.dev/instructions/mdelapenya/coding-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/mdelapenya/coding-skills/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00934 | $0.00934 |
| Opus 5 | $0.00467 | $0.00467 |
| Sonnet 5 | $0.00187 | $0.00187 |
| Haiku 4.5 | $0.00093 | $0.00093 |
Grade A, and why
coding-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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 96 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.
Purpose
This repository stores reusable AI agent skills for software development workflows. Skills follow the Agent Skills open standard and work across multiple AI platforms.
Repository Layout
coding-skills/
├── skills/ # Canonical skill definitions (single source of truth)
│ └── <skill-name>/
│ ├── SKILL.md # Required: frontmatter + instructions
│ └── references/ # Optional: detailed docs (loaded on-demand)
├── .claude/skills -> ../skills # Claude Code discovery
├── .agents/skills -> ../skills # OpenAI Codex / GitHub Copilot
├── .github/skills -> ../skills # GitHub Copilot
├── .gemini/skills -> ../skills # Gemini CLI
├── .claude-plugin/plugin.json # Claude plugin metadata
└── gemini-extension.json # Gemini extension metadata
All edits go in skills/ — the platform directories are symlinks. Never create files directly in .claude/skills/, .agents/skills/, .github/skills/, or .gemini/skills/.
Skill Structure
SKILL.md Format
---
name: skill-name
description: What the skill does and when to use it. Include trigger phrases.
allowed-tools: Read Edit Grep Glob
metadata:
author: mdelapenya
version: "1.0.0"
---
# Skill Title
Instructions, workflows, and reference content.
Frontmatter Fields
name(required): Lowercase + hyphens only, 1-64 chars, must match directory namedescription(required): Used for auto-discovery — be specific, include trigger phrases (e.g., "Use when user says X, Y, Z")allowed-tools: Space-delimited pre-approved tools (e.g.,Read Grep Bash(python *))metadata: Key-value pairs for author, version, tagsdisable-model-invocation: Settruefor manual-only skills (side-effect operations like deploy)user-invocable: Setfalsefor background-knowledge-only skills (hidden from user menu)context: fork: Run in isolated subagent contextagent: Subagent type when usingcontext: fork(Explore,Plan,general-purpose)
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.
- 4d ago First seen · 96 lines · 934 tokens per session scan A 4a734db3ec8a
coding-skills CLAUDE.md is an instructions file published in the GitHub repository mdelapenya/coding-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 934 tokens to every session, about $0.0047 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.
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.
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).
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.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-release stance: foundation over blast radius, repository layout, commands and host sandbox failures.