Borrowing it
Nothing to install: this file belongs to aliasunder/agent-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.
curl -O https://raw.githubusercontent.com/aliasunder/agent-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/aliasunder/agent-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/aliasunder/agent-skills/agents-md)<a href="https://agentmods.dev/instructions/aliasunder/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/aliasunder/agent-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.
<a href="https://agentmods.dev/instructions/aliasunder/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/aliasunder/agent-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00788 | $0.00788 |
| Opus 5.5 | $0.00315 | $0.00315 |
| Sonnet 5.5 | $0.00158 | $0.00158 |
| Haiku 4.5 | $0.00079 | $0.00079 |
Grade A, and why
agent-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 1mo 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 — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Guidelines
This file provides guidance to Claude Code (claude.ai/code), Codex CLI, and other AI agents when working with code in this repository.
Project Overview
agent-skills is a collection of agent skills — packaged instructions that extend AI coding agents with specialized capabilities. Install via npx skills add aliasunder/agent-skills.
Repository Structure
agent-skills/
README.md
CONTRIBUTING.md
LICENSE
package.json
skills/
<skill-name>/
SKILL.md # Skill definition (frontmatter: name, description)
references/ # Detailed reference docs loaded on demand
assets/ # Static files (dashboards, templates)
evals/
<skill-name>/ # Test scenarios and results
.github/workflows/
auto_release.yml # Tag-triggered build + GitHub release
manual_release.yml # UI-triggered version bump + release
Current Skills
| Skill | Directory | Description |
|---|---|---|
| Trip Planner | skills/trip-planner/ |
Multi-week trip planning across 15+ sessions with cross-validated research, budget tracking, printable daily cards, and phase-based workflow |
| Obsidian Vault | skills/obsidian-vault/ |
Vault-aware editing for Obsidian. Detects conventions, understands Dataview, Tasks, Kanban, Meta Bind, and Templater interactions, and keeps notes connected, queryable, and safe. |
Skill Architecture
Skills are discovered by npx skills scanning skills/*/SKILL.md. Each SKILL.md has YAML frontmatter with:
name— must match parent directory, lowercase letters/numbers/hyphensdescription— explains what the skill does and when it should activate
The body contains the operational instructions: workflow steps, conventions, reference file loading triggers, and safe output rules.
Reference files (references/*.md) are loaded on demand — only when the agent enters a task that needs them. This keeps the core SKILL.md lean while having deep guidance available.
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.
- 1mo ago First seen · 78 lines · 788 tokens per session scan A be737a7280c1
agent-skills AGENTS.md is an instructions file published in the GitHub repository aliasunder/agent-skills (5 stars, last pushed 13d ago), licensed MIT. It adds 788 tokens to every session, about $0.0032 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.
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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 copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.