What is agent-skills AGENTS.md?

Contributor instructions for a repository containing hundreds of reusable skills for AI coding agents. It explains the repository layout, skill categories, hierarchy rules, and expected companion files.

Use it when working on the agent-skills repository, especially when creating, editing, organizing, or reviewing a skill.

It gives contributors the rules and structure they need to add or maintain skills consistently in that repository.

How Tyler-R-Kendrick/agent-skills configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to Tyler-R-Kendrick/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.

Copy the file

curl -O https://raw.githubusercontent.com/Tyler-R-Kendrick/agent-skills/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/Tyler-R-Kendrick/agent-skills

Made for: Codex, OpenCode.

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/tyler-r-kendrick/agent-skills/agents-md/github.svg)](https://agentmods.dev/instructions/tyler-r-kendrick/agent-skills/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/tyler-r-kendrick/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/tyler-r-kendrick/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/tyler-r-kendrick/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/tyler-r-kendrick/agent-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 5,499 This file is loaded in full into every session.

When invoked 5,499 The same file — it is already loaded in full.

Security scan A 1 finding. 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	$0.05499	$0.05499
Opus 5.5	$0.02200	$0.02200
Sonnet 5.5	$0.01100	$0.01100
Haiku 4.5	$0.00550	$0.00550

Measured 2mo ago against content hash 6817482ee19f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-skills AGENTS.md scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| `tools` | Development tools and CLI utilities | bash, git, docker, jq, curl, ssh |

AGENTS.md · 635 lines

How it starts

The opening of the file, as written. The whole thing — 635 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Contributor Guidance

Comprehensive guidance for AI agents and human contributors creating, maintaining, and extending skills in this repository.

Repository Overview

This repository contains 389 skills organized into 14 top-level categories. Each skill is a self-contained directory with a SKILL.md definition file and generated companion files.

Skill Categories

Category	Purpose	Example Skills
`ai`	Agent protocols, AI/LLM interop standards	mcp, a2a, acp, x402, agent-skills
`design-system`	Design tokens, component libraries, design-to-code	figma, storybook, design-tokens, style-dictionary
`dev`	Core development knowledge (architecture, algorithms, patterns)	microservices, clean-code, authentication, api-design
`devcontainer`	Dev container configurations for various stacks	python, typescript, dotnet, docker-in-docker
`dotnet`	.NET/C# ecosystem libraries and frameworks	aspire, polly, blazor, entity-framework, serilog
`iac`	Infrastructure-as-code and cloud provisioning	terraform, kubernetes, docker, helm, pulumi
`legal`	Legal and compliance topics	privacy-data-protection, open-source-licensing, ai-regulation
`python`	Python ecosystem, packages, and tooling	fastapi, pydantic, langchain, pytest, pandas
`security`	Application and AI security	owasp, threat-modeling, cryptography, supply-chain
`specs`	Specification, documentation, and diagramming	mermaidjs, plantuml, adr, prd, gherkin
`testing`	Testing strategies and methodologies	unit-testing, e2e-testing, contract-testing, chaos-testing
`tools`	Development tools and CLI utilities	bash, git, docker, jq, curl, ssh
`typescript`	TypeScript/Node.js ecosystem and packages	react, nextjs, zod, prisma, rxjs, redux

Hierarchy Model

Skills use a 2-3 level nesting hierarchy:

skills/
  {category}/                  # Level 1: broad domain
    SKILL.md                   # Category overview + navigation
    {subcategory}/             # Level 2: topic grouping
      SKILL.md                 # Subcategory overview
      {skill}/                 # Level 3: specific skill
        SKILL.md               # Deep technical content

Read the full file on GitHub · 635 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 · 635 lines · 5,499 tokens per session scan A 6817482ee19f

Subscribe to this mod's changes

agent-skills AGENTS.md is an instructions file published in the GitHub repository Tyler-R-Kendrick/agent-skills (13 stars, last pushed 5mo ago), licensed MIT. It adds 5,499 tokens to every session, about $0.0220 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Building agents

agent-skills AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
agent-skills AGENTS.mdTyler-R-Kendrick/agent-skills	Instructions file	13	5mo ago	MIT	A	5,499	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	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	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

agent-skills: Instructions file for Codex