Borrowing it
Nothing to install: this file belongs to X-Zero-L/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/X-Zero-L/agent-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/X-Zero-L/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/x-zero-l/agent-skills/agents-md)<a href="https://agentmods.dev/instructions/x-zero-l/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/x-zero-l/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/x-zero-l/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/x-zero-l/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 | $0.01232 | $0.01232 |
| Opus 5.5 | $0.00493 | $0.00493 |
| Sonnet 5.5 | $0.00246 | $0.00246 |
| Haiku 4.5 | $0.00123 | $0.00123 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to AI coding agents when working with this repository.
Repository Overview
A collection of skills for AI coding agents (Claude Code, Cursor, etc.). Skills are packaged instructions and scripts that extend agent capabilities and follow the Agent Skills specification.
Repository Structure
agent-skills/
├── skills/ # Individual skill directories
│ └── gemini-cli/ # Gemini CLI skill
│ ├── SKILL.md # Skill definition and instructions
│ └── scripts/ # Helper scripts
├── README.md # User-facing documentation
└── AGENTS.md # This file - instructions for AI agents
Creating a New Skill
Directory Structure
skills/
{skill-name}/ # kebab-case directory name
SKILL.md # Required: skill definition
scripts/ # Optional: executable scripts
references/ # Optional: additional documentation
assets/ # Optional: templates, images, data
Naming Conventions
- Skill directory:
kebab-case(e.g.,gemini-cli,pdf-tools) - SKILL.md: Always uppercase, always this exact filename
- Scripts: Descriptive names with appropriate extensions (
.sh,.mjs,.py)
SKILL.md Format
Every skill MUST have a SKILL.md file with YAML frontmatter:
---
name: skill-name
description: Clear description of what this skill does and when to use it. Include trigger phrases.
license: Apache-2.0 # Optional
metadata: # Optional
author: your-name
version: "1.0"
---
# Skill Title
Brief description of what the skill does.
## When To Use
Use this skill when:
- Specific condition or trigger phrase
- User asks to do X
- Working with Y technology
## How It Works
1. Step-by-step explanation
2. Of the skill's workflow
3. And what it does
## Usage
If the skill includes scripts:
```bash
node scripts/example.mjs --arg value
Arguments:
--arg- Description (optional, defaults to X)
Examples:
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 · 201 lines · 1,232 tokens per session scan A 7c9795d2e65a
agent-skills AGENTS.md is an instructions file published in the GitHub repository X-Zero-L/agent-skills (2 stars, last pushed 8mo ago), licensed MIT. It adds 1,232 tokens to every session, about $0.0049 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.
agent-skills AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agent-skills AGENTS.mdX-Zero-L/agent-skills | Instructions file | 2 | 8mo ago | MIT | A | 1,232 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |